Health & Fitness
Heart-Rate Zones
Estimate training zones with the age-based maximum heart-rate method.
Preparing your result…
What this calculator does
Calculates Heart-Rate Zones using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
Estimated max HR = 220 − age; AHA moderate = 50–70% of max; vigorous = 70–85% of max
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Approximate age-predicted maximum HR=220−age, in beats/min. AHA adult moderate-intensity target≈50–70% of predicted maximum; vigorous≈70–85%.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Title promises zones, while original only gives a maximum. Identify zone convention; this is an adult population estimate, not a measured maximum. Medication, disease and individual variation affect appropriate targets.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Age (years) | Estimated maximum heart rate |
|---|---|---|
| Worked example | 35 | 185 bpm |
| Half the amounts | 18 | 202 bpm |
| Double the amounts | 70 | 150 bpm |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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