basic

Archimedes Buoyancy Force Calculator

Upward buoyant force on a submerged volume.

Compute the buoyant force on an object submerged (or partially submerged) in a fluid using F_b = ρ_fluid · V · g, and the apparent weight of an object of given mass when submerged in that fluid.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

m³
kg/m³
kg

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

F_b = ρ_fluid · V · g; W_apparent = m·g − F_b.

In depth

Compute the buoyant force on an object submerged (or partially submerged) in a fluid using F_b = ρ_fluid · V · g, and the apparent weight of an object of given mass when submerged in that fluid.