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Maximal Aerobic Speed (MAS) Calculator

MAS = VO₂max / 3.5 × (1/min km) — speed at VO₂max.

Estimates Maximal Aerobic Speed (MAS) from VO₂max or a time trial, and calculates training paces at different percentages of MAS.

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

MAS (km/h) ≈ VO₂max / 3.5; also from time trial: d/t

In depth

Estimates Maximal Aerobic Speed (MAS) from VO₂max or a time trial, and calculates training paces at different percentages of MAS.