# VO2max Calculator

Estimate your aerobic fitness two ways.

URL: https://shortformkit.com/vo2max-calculator/
Updated: 2026-10-13

For the Cooper test, run as far as you can in 12 minutes on a flat track. The heart rate method (Uth et al.) needs a real max heart rate, not 220 minus age, to be useful.

**Formula:** Cooper: (metres − 504.9) ÷ 44.73. Heart rate: 15.3 × HRmax ÷ HRrest

Results are estimates for general information, not medical or financial advice.

## How it works

1. **Enter your values** The result updates as you type.
2. **Switch units if needed** Metric or US units, where it applies.
3. **Read the result** Nothing is stored or sent anywhere.

## FAQ

**Is it free?**
Yes. No account, no limits.

**Is my data stored?**
No. The calculation happens in your browser and nothing is sent to a server.


Source: Shortform Kit (https://shortformkit.com/vo2max-calculator/). Free, no login.