Buoyant Force Calculator — F_b = ρVg
The upward push equals the weight of the displaced fluid. An object floats when this matches its weight.
Buoyant Force Calculator — F_b = ρVg
How to interpret the result
A hull displacing 2.5 m³ of water feels ~24.5 kN of lift — enough to float about 2,500 kg of boat and cargo.
Assumptions
- Fluid density fixed at water: 1000 kg/m³ (for other fluids scale by density ratio)
- g = 9.81 m/s²
- V is the submerged volume only