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Fitness Calculators
Estimate the calories an activity burns, plan your running pace and race times, and find training zones from published formulas.
Nothing you enter leaves your device.
Results are estimates for general information only, not medical advice.
All fitness tools
- Fitness
Calories Burned Calculator
Estimate calories burned by walking, running, cycling and many other activities.
- Fitness
Running Pace Calculator
Work out pace, time or distance for a run, with splits and race predictions.
- Fitness
Heart Rate Zone Calculator
Find your maximum heart rate and five training zones from your age and resting pulse.
- Fitness
One-Rep Max Calculator
Estimate the most you can lift once from a set of up to 10 repetitions.
- Fitness
Steps to Distance Calculator
Convert steps into kilometres or miles, or a distance into steps, from your height.
Good to know
Frequently asked questions
How accurate are calories-burned estimates?
They use average MET values for adults, so a watch or another person may get a different number. A difference of 10 to 20% is common.
Can I use miles?
Yes. The running calculators work in kilometres or miles, and show both in the results.
Are these calculators medical advice?
No. They give estimates for general information, using the published formulas named on each page. For decisions about your health, talk to a doctor or another qualified professional.
Is anything I enter stored or sent?
No. Every calculator runs in your browser. Nothing you type is saved, sent to a server or used for advertising.
Can I use these calculators on a phone?
Yes. Every calculator works in a phone browser, with metric or imperial units where it applies, and with the number format of your language.