Buoyancy Calculator (Archimedes' Principle)

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Calculates the upward buoyant force exerted on an object immersed in a fluid, based on Archimedes' Principle.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Object Volume, Fluid Density, and Gravitational Acceleration in the units shown.

Step 2

Read Buoyant Force in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Object Volume: 0.1 cubic meters; Fluid Density: 1,000 kg/m³; Gravitational Acceleration: 9.81 m/s²

Buoyant Force: 981 Newtons

Object Volume: 0.01 cubic meters; Fluid Density: 1,000 kg/m³; Gravitational Acceleration: 9.81 m/s²

Buoyant Force: 98.1 Newtons

Object Volume: 1 cubic meters; Fluid Density: 1.225 kg/m³; Gravitational Acceleration: 9.81 m/s²

Buoyant Force: 12.01725 Newtons

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