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Archimedes Buoyancy & Displaced Fluid Calculator

F_b = ρ_fluid·V_sub·g — buoyant force upward.

Calculates the buoyant force, net upward force, and whether an object floats or sinks from its density, fluid density, and submerged volume.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

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_f × V_sub × g; W = m_obj × g; Net = F_b − W

In depth

Calculates the buoyant force, net upward force, and whether an object floats or sinks from its density, fluid density, and submerged volume.