VO₂

VO₂max Calculator

Quick, colorful and professional tools to estimate your VO₂max from field tests, watch/treadmill data and heart-rate metrics.

Field Test (Formula 2)

Includes Cooper (12-min) and 1.5-mile

Cooper Test — Distance run in 12 minutes (meters)

Formula: VO₂max = (distance_m - 504.9) / 44.73

1.5-mile Test — Time to run 1.5 miles (minutes)

Formula: VO₂max = 483 / time_min + 3.5

Watch / Treadmill Estimate (Formula 3)

Estimate from pace + running heart rate (level ground)

This method uses the ACSM running equation to estimate steady-state VO₂ at your running pace, then scales it by the ratio of HRmax to your average heart rate during the run. This gives a reasonable watch-like estimate when you don't have a factory estimate available.

Pace (minutes per kilometer)

Average heart rate during the run (bpm)

Estimated or known HRmax (bpm) (if unknown, use 220 - age)

Heart-rate Index (Formula 4)

Estimate using max and resting heart rate

Resting heart rate (bpm)

Estimated or known HRmax (bpm)