Buoyancy Calculator


(Beta, please double check results & report bugs!)

This calculator finds the buoyancy of an object based on it’s displacement. It also uses the object weight or density to find the net buoyancy.

(success) Enter volume followed by unit. (e.g. "0.1 m^3" or "20 in^3")
(success) Enter weight or density followed by unit. (e.g. "2.1 kg" or "12 lb/ft^3")

Net Buoyancy
Average Density

Densities of Common Materials

Material Density (click to use above)

Learn More

This calculator uses the js-quantities library by gentooboontoo for unit conversions.