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Running Mechanical Power (Watts) Calculator

P = (F_gravity + F_drag) × v — estimated running power.

Estimates the mechanical running power output in watts from body mass, running speed, grade, and air density (drag approximation).

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

P = m × g × v × (sin θ + Cr) + 0.5 × ρ × Cd × A × v³

In depth

Estimates the mechanical running power output in watts from body mass, running speed, grade, and air density (drag approximation).