Health Calculators
431 Free Medical Calculators ⚕️
Your body is complicated — the math shouldn't be. Check your BMI, figure out calorie targets, calculate medication doses, track pregnancy milestones, or run clinical risk scores. 431 health calculators covering everything from basic fitness to intensive care, all private and running in your browser.
📏 Body Metrics Dietary❤️ Cardiovascular🤰 Pregnancy Medication🚑 Emergency
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Body Measurements Calculators
22 calculators
ABSI Calculator
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Adjusted Body Weight Calculator
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BAI Calculator - Body Adiposity Index
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Body Fat Calculator
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Body Frame Size Calculator
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Body Shape Calculator
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BRI Calculator — Body Roundness Index
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BSA Calculator – Body Surface Area
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Draw Length Calculator
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Bedridden Patient Height Calculator
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Face Shape Calculator
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FFMI Calculator (Fat-Free Mass Index)
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Ideal Weight Calculator
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Karvonen Formula Calculator
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Lean Body Mass Calculator
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Overweight Calculator
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Ponderal Index Calculator
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RFM Calculator (Relative Fat Mass)
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Skinfold Body Fat Calculator
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Waist to Hip Ratio Calculator
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Waist to Height Ratio Calculator
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Weight Loss Percentage Calculator
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⚖️
BMI Calculators
7 calculators
🎖️
Army Calculators
6 calculators
🥗
Dietary Calculators
32 calculators
Added Sugar Intake Calculator
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BEE Calculator
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Harris-Benedict Calculator (Basal Metabolic Rate)
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Katch-McArdle Calculator
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BMR Calculator (Basal Metabolic Rate, Mifflin St Jeor Equation)
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Calorie Calculator
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Calorie Deficit Calculator
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Carb Calculator (Carbohydrates)
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Diet Risk Score Calculator
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DRI Calculator
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EER Calculator — Estimated Energy Requirement
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Fat Intake Calculator
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Fiber Calculator
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Gastric Sleeve Weight Loss Calculator
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IIFYM Calculator (If It Fits Your Macros)
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Keto Calculator
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Macro Calculator
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Maintenance Calorie Calculator
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Meal Calorie Calculator
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Micronutrient Calculator
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Net Carbs Calculator
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Protein Calculator
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Quarantine Activity Calculator
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RMR Calculator - Resting Metabolic Rate
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Calorie Intake Calculator (Simple)
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Sodium in Salt Calculator
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TDEE Calculator - Total Daily Energy Expenditure
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Vitamin Calculator
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Vitamin A Calculator
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Vitamin D Calculator
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Weight Gain Calculator
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Weight Watchers Points Calculator
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Diabetes Calculators
11 calculators
Blood Sugar Converter
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Diabetes Risk Calculator
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Diabetic Ketoacidosis Calculator
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Estimated Average Glucose Calculator
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Glycemic Index Calculator
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Glycemic Load Calculator
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A1c Calculator – Hemoglobin A1c to Average Blood Sugar
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HOMA-IR Calculator — Insulin Resistance
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Insulin Dosage Calculator
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QUICKI Calculator
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Warsaw Method Calculator
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Metabolic Disorders Calculators
7 calculators
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Sleep Calculators
6 calculators
❤️
Cardiovascular System Calculators
39 calculators
6 Minute Walk Test Calculator
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ABI Calculator (Ankle-Brachial Index)
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Aortic Valve Area Calculator
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Arterial Age Calculator
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Blood Pressure Calculator
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Cardiac Index Calculator
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Cardiac Output Calculator
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Cerebral Perfusion Pressure Calculator
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CHA2DS2-Vasc Calculator
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CVD Risk Calculator – Cardiovascular Disease 10-year Risk
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DAPT calculator
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Doppler Echo Cardiac Output Calculator
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Duke Treadmill Score Calculator
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ECG Boxes to Seconds Calculator
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ECG Heart Rate Calculator
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EROA - Mitral Regurgitation Calculator
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Framingham Risk Calculator
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Gorlin Formula Calculator
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GRACE Calculator
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Gupta Risk Calculator
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HAS-BLED Calculator
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Heart Failure Life Expectancy Calculator
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HEART Score Calculator
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ICH Volume Calculator
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LV Calculator
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MAP Calculator (Mean Arterial Pressure)
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Mitral Valve Area Calculator
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Padua Score Calculator
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PERC Calculator - Pulmonary Embolism Rule-Out Criteria
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PISA Calculator
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Wells Score Calculator for Pulmonary Embolism
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PVR Calculator - Pulmonary Vascular Resistance
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QTc Calculator
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Rate Pressure Product Calculator
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RCRI Calculator
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Revised Geneva Score Calculator for Pulmonary Embolism
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Stroke Volume Calculator
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TIMI Score for STEMI Calculator
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TIMI Score Calculator for UA/NSTEMI
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🤰
Gynecology & Pregnancy Calculators
36 calculators
BBT Calculator | Basal Body Temperature
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Birth Control Calculator
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Bishop Score Calculator
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Breast Cancer Recurrence Risk Calculator
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Breast Cancer Risk Calculator
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Breastfeeding Calorie Calculator
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Clomid Ovulation Calculator
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Conception Calculator
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Crown-rump Length Calculator
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Due Date Calculator
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EDD Calculator - Estimated Date of Delivery
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Egg Freezing Calculator
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Fertility by Age Calculator
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Flange Size Calculator
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Fundal Height Calculator
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Gestational Age Calculator
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hCG Levels Calculator
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Implantation Calculator
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IVF Due Date Calculator
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Luteal Phase Calculator
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MCA Calculator
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Mean Sac Diameter Calculator
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Nuchal Translucency Calculator
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Ovulation Calculator
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Pearl Index Calculator
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Period Calculator
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Pregnancy Test Calculator
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Pregnancy Weight Gain Calculator
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Progesterone to Estrogen Ratio Calculator
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Reverse Due Date Calculator
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Sperm Analysis Calculator
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Stillbirth Risk Calculator
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Testosterone to Estradiol Ratio Calculator
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Chances of Having Twins Calculator
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VBAC Calculator (Vaginal Birth After Cesarean Section)
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VTE Risk Score Calculator in Pregnancy
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🚬
Addiction Medicine Calculators
17 calculators
Addiction Calculator
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Alcohol Unit Calculator
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Audit-C Calculator – Am I an Alcoholic?
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Audit Score Calculator
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BAC Calculator (Blood Alcohol Content)
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Caffeine Calculator
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CAGE Questionnaire Calculator
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Cigarette Calculator
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CIWA Calculator
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DUDIT Calculator
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Fagerstrom Test for Nicotine Dependence Calculator
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Finnegan Score Calculator
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HSI Calculator — Heaviness of Smoking Index
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Pack Year Calculator
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Smoking Recovery Calculator
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Sobriety Calculator
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Standard Drink Calculator
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🚽
Urology & Nephrology Calculators
19 calculators
Adrenal Washout Calculator
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Albumin Creatinine Ratio Calculator
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Bladder Volume Calculator
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BUN Creatinine Ratio Calculator
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Creatinine Clearance Calculator
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EORTC Bladder Cancer Recurrence and Progression Calculator
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FENa Calculator (Fractional Excretion of Sodium)
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FEUrea Calculator — Acute Kidney Injury Cause Differentiation
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GFR Calculator - Estimated Glomerular Filtration Rate
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Kidney Failure Risk Calculator
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Kidney STONE Calculator for Percutaneous Neprolithotomy
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Kt/V Calculator Daugirdas
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Metastatic Prostate Cancer Prognosis Calculator
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Protein Creatinine Ratio Calculator
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PSA Density Calculator
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PSA Doubling Time Calculator
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TTKG Calculator - Transtubular Potassium Gradient
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Urine Output Calculator
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URR Calculator - Urea Reduction Ratio
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🧪
Electrolytes & Fluids Calculators
22 calculators
Acid Base Calculator
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Anion Gap Calculator
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Arterial Blood pH Calculator
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Bicarbonate Deficit Calculator
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Corrected Calcium Calculator
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Corrected Magnesium Calculator
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Drip Rate Calculator
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Drops Per Minute Calculator
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Free Water Deficit Calculator
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IV Flow Rate Calculator
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Parkland Formula Calculator
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Plasma Osmolality Calculator
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Serum Osmolality Calculator
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Sodium Change Calculator in Hypertriglyceridemia
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Sodium Correction Calculator
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Sodium Correction Rate Calculator for Hypo- and Hypernatremia
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Sodium Deficit Calculator
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Total Body Water Calculator
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Urine Anion Gap Calculator
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Venous Blood pH Calculator
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Water Intake Calculator
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Winters' Formula Calculator
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🆎
Hematology Calculators
27 calculators
4T Score Calculator | HIT
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Absolute Eosinophil Count Calculator
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Absolute Lymphocyte Count Calculator
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Absolute Reticulocyte Count Calculator
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Age-Adjusted D-dimer Calculator
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Albumin Globulin Ratio Calculator
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ANC Calculator — Absolute Neutrophil Count
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ANC Calculator without Bands
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Blood Donation Due Date Calculator
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Blood Donor Calculator
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Allowable Blood Loss Calculator
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Blood Type Calculator
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Blood Volume Calculator
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Corrected Reticulocyte Count Calculator
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DIC Syndrome Calculator
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Diffuse Large B-cell Lymphoma Prognosis Calculator
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Fresh Frozen Plasma Dose Calculator
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Hematocrit to Hemoglobin Ratio Calculator
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INR Calculator
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Iron Deficiency Calculator
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Mentzer Index Calculator
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MIPI Calculator (Mantle Cell Lymphoma International Prognostic Index)
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mmol/L to mg/dL Calculator
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NLR Calculator
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Plasma Volume Calculator
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RBC Indices Calculator | What is MCHC?
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Transferrin Saturation Calculator
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👶
Percentile Calculators
8 calculators
Baby Percentile Calculator
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Birth Weight Percentile Calculator
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BMI Percentile Calculator
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Height Percentile Calculator
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Weight Percentile Calculator
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Fetal Weight Percentile Calculator
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Head Circumference Percentile Calculator
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IQ Percentile Calculator
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Pediatric Calculators
15 calculators
Adjusted Age Calculator
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APGAR Score Calculator
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Baby Eye Color Calculator
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Baby Formula Calculator
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Baby's Milk Intake Calculator
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Exclusive Pumping Calculator
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GIR calculator (Glucose Infusion Rate)
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Height Calculator
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Maintenance Fluids Calculator
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Newborn Hyperbilirubinemia Assessment Calculator
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PECARN Calculator
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Pediatric Blood Pressure Calculator
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Pediatric Blood Transfusion Volume Calculator
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Pediatric Blood Volume Calculator
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Pediatric GFR Calculator - Glomerular Filtration Rate
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👶💊
Pediatric Dosage Calculators
6 calculators
💊
Dosage Calculators
28 calculators
Adderall Dosage Calculator
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Aleve Dosage Calculator
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Benadryl Dosage Calculator
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Benzodiazepine Conversion Calculator
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Carboplatin Calculator
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Cefdinir Dose Calculator
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Dosage Calculator
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Drug Half-Life Calculator
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Fish Oil Calculator
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Gabapentin Dosage Calculator
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Hydroxychloroquine Dose Calculator
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Isotretinoin Dose Calculator
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IVIG Dose Calculator
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Levothyroxine Dosage Calculator
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Lidocaine Dose Calculator
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Local Anesthetic Calculator
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mcg to IU Converter
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Melatonin Dosage Calculator
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MME Calculator
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Opioid Conversion Calculator
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Peptide Dosage Calculator
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Prescription Refill Calculator
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Steroid Conversion Calculator
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tPA Calculator – Stroke Dosing
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Tramadol Dosage Calculator
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Tylenol Dosage Calculator
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Tylenol Overdose Calculator
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Warfarin Dosing Calculator
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💨
Pulmonary Calculators
19 calculators
Aa Gradient Calculator
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BODE Index Calculator
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CURB-65 Calculator
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Dead Space Calculator
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Endotracheal Tube Size Calculator
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FEV1/FVC Ratio Calculator
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Light's Criteria Calculator for Pleural Effusion
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Lung Cancer Risk Calculator
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Lung Capacity Calculator
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Lung Nodule Growth Rate Calculator
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Mean Airway Pressure Calculator
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Oxygenation Index Calculator
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Peak Flow Calculator — Estimated Peak Expiratory Flow
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PF Ratio Calculator
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PSI Calculator
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Qp/Qs Calculator
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RSBI Calculator - Rapid Shallow Breathing Index
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Tidal Volume Calculator
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Vital Capacity Calculator
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🧠
Psychiatry & Psychology Calculators
5 calculators
🚑
Intensive & Emergency Care Calculators
16 calculators
Alvarado Score Calculator
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APACHE II Calculator
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GCS Calculator (Glasgow Coma Scale)
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Injury Severity Score Calculator
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ICH Score Calculator
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LRINEC Score Calculator
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MEWS Score Calculator
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NEDOCS Calculator
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NIH Stroke Scale Calculator
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qSOFA Score Calculator
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Revised Trauma Score Calculator
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SAPS II Calculator: Simplified Acute Physiology II Score Calculator
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SCORAD Calculator - SCORing Atopic Dermatitis
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Sepsis Calculator (Sepsis-3 Criteria)
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Shock Index Calculator
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SOFA Score Calculator
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🍽️
Digestive System Calculators
9 calculators
APRI Calculator
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Ast Alt Ratio Calculator
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Child Pugh Calculator
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CDAI calculator (Crohn's Disease Activity Index)
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Maddrey's Discriminant Function Calculator
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FIB-4 Calculator
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Lille Score Calculator
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MELD Calculator (Model for End-Stage Liver Disease)
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NAFLD Fibrosis Score Calculator
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👥
Epidemiology Calculators
13 calculators
COVID-19 Mortality Risk Calculator
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Event Risk Calculator - Coronavirus
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Denver HIV Risk Score Calculator
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Hand Sanitizer Calculator - Coronavirus
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Incidence Rate Calculator
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Infectious Disease and Epidemic Calculator (SIR Model)
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Mask vs. No Mask Calculator
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Max Vaccine Immunity Calculator
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Mortality Rate Calculator
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NNT Calculator
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Reopening Calculator – Coronavirus
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Social Distancing Calculator - Coronavirus
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Coronavirus Protection - Swiss Cheese Model
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☢️
Radiology Calculators
4 calculators
👵
Geriatric Medicine Calculators
9 calculators
Alzheimer's Life Expectancy Calculator
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Barthel Index Calculator
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BIMS Calculator – Brief Interview for Mental Status
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Braden Score Calculator
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Charlson Comorbidity Index Calculator
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Frailty Index Calculator
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Morse Fall Scale Calculator
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Osteoporosis Risk Calculator
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Tinetti Calculator
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😷
Covid-19 Vaccine Calculators
16 calculators
Biden's Vaccine Plan Calculator
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Vaccine Efficacy Calculator
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COVID-19 Vaccine Production Calculator
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Vaccine Queue Calculator for Australia
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Vaccine Queue Calculator for India
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Vaccine Queue Calculator for Canada
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Vaccine Queue Calculator for England
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Vaccine Queue Calculator for Malaysia
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Vaccine Queue Calculator for Ireland
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Vaccine Queue Calculator for the Netherlands
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Vaccine Queue Calculator for Northern Ireland
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Vaccine Queue Calculator for the Philippines
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Vaccine Queue Calculator for Scotland
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Vaccine Queue Calculator for South Africa
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Vaccine Queue Calculator for the UK
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Vaccine Queue Calculator for Wales
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🔬
Other Health Calculators
16 calculators
20/20 Vision Calculator for 2025
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Aldrete Score Calculator
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BASDAI Score Calculator
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Beighton Score Calculator
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Berg Balance Test Calculator
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Hot Car Calculator
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Centor Score Calculator (Modified/McIsaac)
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Dog Walking Benefits Calculator
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DASI Calculator (Duke Activity Status Index)
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EASI Score Calculator
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Fatigue Severity Scale Calculator
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Free Testosterone Calculator — with Bioavailable Levels
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Gut Microbiome Score Calculator
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Noise Pollution Calculator - Maximal Exposure Time
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Pokémon GO Weight Loss Calculator
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Time Of Death Calculator
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♻️
Redundant Calculators
16 calculators • Alternative versions for easier discovery
90 Minute Sleep Cycle Calculator
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Blood Pregnancy Test: What Do HCG Results Mean?
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Is BMI (Body Mass Index) a Weight Gain Indicator in Pregnancy?
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Circadian Rhythm Calculator
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Excessive Weight Gain in Pregnancy
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What is a False Negative Pregnancy Test?
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How to Maintain or Lose Weight During Pregnancy?
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What to do after you get a positive pregnancy test?
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Positive Pregnancy Test at 3 Weeks Pregnant: Possible or Not?
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REM Sleep Calculator
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Sleep Cycle Calculator
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Sleep Time Calculator
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Twin Pregnancy Weight Gain Calculator
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Urine Home Pregnancy Test
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Wake Up Calculator
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Pregnancy Weight Gain: Week by Week Breakdown
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Your Health, Scientifically Calculated
👨⚕️
Medical Grade
Evidence-based calculations
complete
All medical specialties covered
Private & Secure
Your data stays on your device
Instant Results
Quick clinical decision support
Your Medical Calculator Toolkit
From body measurements and nutrition planning to clinical scoring systems and emergency care tools — everything is here, organized by specialty. Medical students use them to learn scoring systems like APACHE II and MELD. Clinicians use them for quick dosing checks and risk assessments. Patients use them to understand their own health better.
431 calculators spanning body metrics, dietary planning, cardiovascular risk, pregnancy, dosing, hematology, emergency care, and more. All evidence-based, all private, all free.
For Healthcare Professionals
- Clinical scoring systems and risk assessment
- Medication dosing and conversions
- Laboratory value interpretations
- Emergency and intensive care calculators
- Specialty-specific tools (cardiology, nephrology, etc.)
- Evidence-based decision support
For Patients & Students
- Body measurements and fitness tracking
- Pregnancy and fertility calculators
- Dietary and nutrition planning
- Sleep and wellness tools
- Disease risk assessment
- Educational medical references
Medical Disclaimer: These calculators are for informational and educational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider for medical decisions. The information provided is based on established medical formulas and guidelines, but individual cases may vary and require personalized medical evaluation.