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PHYSICS / FLUIDS

Buoyant Force Calculator

Calculate ideal Archimedean buoyant force from displaced-fluid weight. Inspect the governing equation, substituted SI values, output, and model boundaries in one guided workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

Filter by unit name, symbol, or code. Your current selections remain available.

Preparing the calculator...

Use boundary

Calculation path

Calculate ideal Archimedean buoyant force from displaced-fluid weight. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

F_b = rho_f g V_d

What you provide

What you provide

  • Fluid density expressed in kg/m^3, using the same scenario as the other inputs
  • Gravitational acceleration expressed in m/s^2, using the same scenario as the other inputs
  • Displaced fluid volume expressed in m^3, using the same scenario as the other inputs

What you receive

What you receive

  • Buoyant force in N from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

The surrounding fluid is static and density is uniform over the displaced volume.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors