---
title: "VO2 Max Calculator — Estimate Cardiorespiratory Fitness (AHA, ACSM Norms)"
description: "Estimate your VO2 max from resting heart rate, Rockport walk test, or Cooper 12-min run. AHA and ACSM fitness classifications by age and sex. Free, no ads."
url: "https://worldcalculators.org/calculators/vo2-max/"
canonical: "https://worldcalculators.org/calculators/vo2-max/"
---

# VO₂ Max Calculator

Estimate your VO2 max from resting heart rate, Rockport walk test, or Cooper 12-min run. AHA and ACSM fitness classifications by age and sex. Free, no ads.

## Quick answer

VO₂ max is your peak oxygen uptake in mL/kg/min. Average for a 35-year-old man: ~40–45. Average for a 35-year-old woman: ~33–38. Elite endurance athletes: 65–85+. VO₂ max declines ~1%/year without training. Regular aerobic exercise can improve it 10–25% in 6–12 months. Classification tables used: AHA (American Heart Association) and ACSM (American College of Sports Medicine).

## VO₂ Max Norms by Age — Men

Values in mL/kg/min. Source: AHA / ACSM classification tables.

Source: https://worldcalculators.org/calculators/vo2-max/
Markdown mirror of the HTML page. Prefer this URL for RAG; the interactive calculator still lives on the HTML page.