Physics

Buoyant Force Calculator

Find upward force from displaced fluid volume.

SI units shown beside each fieldIdeal model explained below

Physical quantities

Runs on your device

CALCULATED QUANTITY

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter fluid density, displaced volume, gravitational acceleration.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Buoyant force = fluid density × displaced volume × g.

A WORKED EXAMPLE

Using fluid density = 1000 kg/m³, displaced volume = 0.01 m³, gravitational acceleration = 9.80665 m/s², the result is 98.0665 N. Change these example inputs to match your task; use the method above to check each step.

What to keep in mind

An idealized educational model using the stated SI units. Real systems may need additional forces, losses or experimental measurements. Not a safety or equipment specification.

Common questions

Which inputs does this calculation need?

Find upward force from displaced fluid volume. Enter fluid density in kg/m³, displaced volume in m³, gravitational acceleration in m/s². The filled example is editable and is not a saved personal record.

How should I interpret the result?

An idealized educational model using the stated SI units. Real systems may need additional forces, losses or experimental measurements. Not a safety or equipment specification.

Methodology maintained by ClarityKit. How these tools are built and checked.