Fluid Mechanics

Buoyancy Calculator

Calculate buoyant force and determine if an object floats or sinks using Archimedes' principle.

Object & Fluid

Fluid

Object Volume (m³)

Object Density (kg/m³) — for float/sink

Gravity (m/s²)

Results

Common Material Densities (kg/m³)

${[["Ice","917"],["Wood (Oak)","600–900"],["Aluminum","2700"],["Iron","7874"],["Copper","8960"],["Lead","11340"],["Gold","19300"],["Concrete","2300"],["Cork","120–240"],["Polystyrene","16–640"]].map(([n,d])=>`

${n}

${d}

`).join("")}

F_b = ρ_fluid × V × g · Object floats if ρ_object < ρ_fluid