Heart Rate Zone Calculator
Calculate your 5 heart rate training zones using the Karvonen formula. Get personalized BPM ranges, exercise recommendations, and calorie burn estimates.
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How to Use Heart Rate Zone Calculator
- 1Enter your age and resting heart rate
- 2Select your fitness level
- 3View your 5 training zones with BPM ranges
- 4Check exercise recommendations for each zone
Frequently Asked Questions
Measure your pulse first thing in the morning before getting out of bed. Count beats for 60 seconds, or 15 seconds and multiply by 4. Average several readings for accuracy.
Zone 2 (60-70% max HR) is often called the 'fat burn zone' because a higher percentage of calories come from fat. However, higher zones burn more total calories.
The Karvonen formula uses Heart Rate Reserve (Max HR - Resting HR) for more accurate zone calculation: Target HR = Resting HR + (HR Reserve × intensity %).
The Free plan includes 10 tool uses per day. Some features require an account or a paid plan. Check the controls on the tool page and Pricing for the applicable limits.
The Heart Rate Zone Calculator returns results based on the inputs and the tool methodology. Check assumptions, units and source dates. Treat projections as estimates. For critical decisions, always consult a qualified professional.
Yes, the Heart Rate Zone Calculator is fully responsive and works perfectly on smartphones, tablets, and desktop computers. Simply open NexTool in your mobile browser and navigate to the tool — no app download required.
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About Heart Rate Zone Calculator
Calculate your 5 heart rate training zones using the Karvonen formula. Get personalized BPM ranges, exercise recommendations, and calorie burn estimates.
Use the controls shown by Heart Rate Zone Calculator to generate and review your result. Available features and usage limits depend on your plan. Check the tool's instructions and privacy information before submitting data.
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