Fitness calculators
Heart Rate Zone Calculator
Estimate maximum heart rate and five training zones from age using the common 220 − age rule.
Estimates only — not medical advice. Formulas are simplified screening tools. Talk to a qualified clinician for health decisions.
Est. max HR
190 bpm
Zone 1 (recovery)
95–114 bpm
Zone 2 (easy)
114–133 bpm
Zone 3 (aerobic)
133–152 bpm
Zone 4 (threshold)
152–171 bpm
Zone 5 (max)
171–190 bpm
How to use
- Enter your age.
- Read estimated max HR.
- Use zone ranges as rough training guides only.
Features
- 220 − age max HR
- Five zone bands
- Instant local results
Privacy & how it works
This calculator runs entirely in your browser with JavaScript. Your inputs are not uploaded to ToolsWeb servers for this tool. Privacy Policy · Disclaimer.
FAQ
Is 220 − age accurate?expand_more
It is a population estimate. Individual max HR varies. Not a clinical measurement.
Is this calculator free?expand_more
Yes. No signup required.
Are my numbers uploaded?expand_more
No. Calculations run in your browser. Inputs are not sent to ToolsWeb servers for this tool.
Is this professional advice?expand_more
No. Results are estimates for general information. See our Disclaimer for health, finance, and related tools.