Science CalculatorsPrivate by design
Buoyancy Calculator
Enter a fluid, displaced volume, and object mass to calculate buoyant force and whether the object floats.
How to use this tool
- 1Choose a fluid or enter a custom density.
- 2Enter the displaced volume.
- 3Enter the object's mass.
- 4See the buoyant force and float/sink result.
Frequently asked questions
Why do steel ships float if steel is denser than water?+
A ship's hull displaces a large volume of water relative to its total mass, so its average density (including all the air inside) is lower than water's — that's what this calculator's volume and mass inputs capture.
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