Navid MoazzezNavid Moazzez

Free VO2 Max Calculator (+ 3 At-Home Tests)

A free VO2 max calculator with three at-home tests, each with its own study's equation, and the average for your age.

5,0(1 rating)
Navid Moazzezby Navid Moazzez·Updated 30. 9. 2026·3 min read·
Your VO2 max
Video on Coverr

Your VO2 max from a test you can do today: your resting heart rate, a 12-minute run or a 1-mile walk. Then how you compare with people your age, and your line to 90.

1

You

Your age
years
Sex
Units
2

Your test

Pick a test
No workout needed: your resting and max heart rate (Uth et al. 2004). Built on trained men, so it reads high for many people.
Your resting heart rateIn the morning, before you get up, or your tracker's overnight average.
bpm
Your measured max heart rateLeave it empty to use NTNU's estimate for your age. A max from a hard test beats any formula.
bpm
3

Your VO2 max

Fill in your test to see your VO2 max.
4

Your page

Your VO2 max as 1 page to keep or share with your coach: your result against your age's average. Open it, download it or save it as a PDF.

Opens in
Your logo (top of the page)
or
Or drag an image in, or paste one.

Preview

General wellness education, not medical advice. Talk to your doctor before you change how you train, especially with a heart condition, medication or pregnancy. Your answers stay in this browser.

Rate this tool

This free VO2 max calculator estimates your VO2 max from a test you can do today: your resting heart rate, a 12-minute run or a 1-mile walk. Then it shows how you compare with people your age and where your line heads by 90.

Each test uses its own study's equation, and your numbers stay in your browser.

Here's what VO2 max is, the three tests and how accurate each is, the averages by age, why it matters, and how to raise yours.

key_takeaways.mdTL;DR

Key takeaways

This VO2 max calculator estimates your score using your resting heart rate, a 12-minute run or a 1-mile walk.
The resting heart rate method reads high for many people because the equation was built on trained men.
In a study of 122,007 patients, the fittest group had about 80% lower risk of death than the least fit.
Peter Attia puts the fall at about 10% a decade and about 15% a decade after 50.

What is VO2 max?

VO2 max is the most oxygen your body can use in a minute of hard exercise, per kilogram of body weight. It's written in milliliters per kilogram per minute (mL/kg/min).

A lab measures it on a treadmill or bike with a mask. At home you estimate it.

Three ways to estimate it at home

Resting heart rate
What you do
Nothing: your resting and max heart rate
The equation
Uth et al. 2004: 15.3 × max ÷ resting
12-minute run
What you do
Run as far as you can in 12 minutes
The equation
Cooper 1968: (meters − 504.9) ÷ 44.73
1-mile walk
What you do
Walk 1 mile fast, note your time and heart rate
The equation
Kline et al. 1987, the Rockport walk test

The resting heart rate method was built on trained men, so it reads high for many people. The run and the walk measure you working, so they're closer.

How you compare

The average VO2 max in NTNU's HUNT3 Fitness Study, measured directly in more than 4,600 Norwegians:

20 to 29
Women
43
Men
54
30 to 39
Women
40
Men
49
40 to 49
Women
38
Men
47
50 to 59
Women
34
Men
42
60 to 69
Women
31
Men
39
70 and over
Women
27
Men
34

The calculator shows how far above or below your age's average you are.

Why it matters

In a study of 122,007 patients on a treadmill, Mandsager and colleagues found the fittest group had about 80% lower risk of death than the least fit. They found no upper limit to the benefit.

How it falls with age

Peter Attia puts the fall at about 10% a decade, and about 15% a decade after 50. The calculator draws your line from today to 90.

How to raise it

Raise your VO2 max0/4

The intervals are Attia's, from Outlive. Find your zone 2 first with the zone 2 heart rate calculator.

Outlive

Outlive by Dr. Peter Attia breaks down the most effective strategies for long-term health and performance, covering exercise, nutrition, sleep, and emotional wellbeing to add years to your life.

I may earn a commission if you make a purchase, at no additional cost to you.

Outlive

Keep going

See what your VO2 max means for life at 90 with the fitness age calculator, time your grip with the dead hang test, and take the full longevity test.

Build your Longevity OS with your AI

Take your plan further in

VO2 max calculator FAQs

Questions about the vO2 max calculator? Here's what to know.

It estimates the most oxygen your body can use in hard exercise, from a simple test.

This one takes your resting heart rate, a 12-minute run or a 1-mile walk.

The 12-minute run and the 1-mile walk, because they measure you working.

The resting heart rate method was built on trained men and reads high for many people.

Above your age's average is a good start.

In NTNU's HUNT3 study, the average at 40 to 49 was 38 for women and 47 for men.

In a study of 122,007 patients, the fittest group had about 80% lower risk of death than the least fit.

No upper limit to the benefit was found.

Build a base of zone 2, then add 1 session a week of 4 minutes hard and 4 minutes easy, 4 to 6 times.

Retest every 8 to 12 weeks.

I did.

I'm Navid Moazzez, and I made the VO2 max calculator as one of my free tools on navid.me, from my own Longevity OS routine.

Read more about me.

Navid Moazzez

AI business strategist & AI OS builder

Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.

Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.

Related calculators

More free tools

Related MCP servers & CLIs

Free AI newsletter

The most actionable AI newsletter for founders

Every week, get proven AI strategies, curated tools, and step-by-step systems to grow your audience, create better content, and build a profitable creator business.

No fluff, no filler, no BS. Just five minutes each week that might level up your online business and life.

P.S. Sign up now to get free access to my ultimate AI tools guide for creators.

Loved by 10,000+ readers