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MotionLab
The upward force a fluid exerts on anything submerged in it, from rubber ducks to cargo ships.
An object floats if the buoyant force from its displaced fluid exceeds its weight — a steel ship floats not because steel is light, but because its hollow shape displaces enough water that the buoyant force outweighs the ship's actual weight.
This calculator computes buoyant force purely from how much fluid is displaced — whether that force is enough to float the object depends on comparing it to the object's actual weight, a separate calculation.
Buoyant force (N)
490.5
F = ρ · V · g (Archimedes' principle)
What you entered
F = ρ × V × g
1000 × 0.05 × 9.81= 490.5 NResult
Buoyant force (N): 490.5
Displacing 0.05 m³ of fluid at 1000 kg/m³ gives 490.5 N of buoyant force.