Buoyancy Calculator
Compute buoyant force in Newtons for fully or partially submerged objects.
Instructions
- Enter fluid density (kg/m³).
- Enter object volume and submerged fraction (0–1).
- Click Calculate to get buoyant force in Newtons.
Formula
Fb = ρ g (V · fraction)
For fully submerged bodies, fraction = 1; for floating bodies, fraction is the submerged volume ratio.
Common Questions
Why does fraction matter?
Partially submerged objects displace less fluid, reducing buoyant force proportionally.
What if the object sinks?
Then fraction = 1 until contact or compression changes volume.