Are inputs saved?
Inputs are calculated in your browser and are not sent to a server. When you use sharing, the reproducible URL includes the current conditions.
Heart Rate Zone Calculator
Estimate training zones from maximum heart rate.
Input
Estimate heart-rate zones from max heart rate.
Result
Zone 1
50-60% / 95-114 bpm
Zone 2
60-70% / 114-133 bpm
Zone 3
70-80% / 133-152 bpm
Zone 4
80-90% / 152-171 bpm
Zone 5
90-100% / 171-190 bpm
Use this as a guide and adjust for your real conditions.
Share this tool
How to use
- Enter Maximum heart rate.
- Check the estimate in the result area.
- Share a reproducible URL if needed.
Calculation
The tool calculates training estimates from distance, time, and heart-rate inputs.
Notes
- Adjust for your condition and environment.
- This is not medical or coaching advice.
- Stop exercising if you feel pain or discomfort.
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FAQ
Are results exact?
Use results as everyday estimates. For exact decisions, confirm with official or specialized sources.
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