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Calculators / Health & fitness / Target heart rate
Target heart rate calculator
Estimate training heart-rate zones from age and resting heart rate.
On this page
Estimated maximum185bpm
Lower target125bpm
Upper target167bpm
Calculator controls
How to calculate
Estimate training heart-rate zones from age and resting heart rate.
Estimated maximum = 220-age; Lower target = resting+(220-age-resting)*low/100; Upper target = resting+(220-age-resting)*high/100
Worked example
Age: 35; Resting heart rate: 65; Lower intensity (%): 50; Upper intensity (%): 85.
Estimated maximum: 185 bpm; Lower target: 125 bpm; Upper target: 167 bpm.
Assumptions and limits
Maximum-heart-rate equations are population estimates. Medicines and health conditions can change safe targets; seek clinical guidance when appropriate.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Estimate training heart-rate zones from age and resting heart rate. The displayed figures use the inputs and formula shown on this page.
When this tool is useful
Use the target heart rate to compare a scenario, check an estimate, or verify a manual calculation.
Understanding your inputs
| Input | What to enter |
|---|---|
| Age | Enter a number of at least 18 and no more than 120. |
| Resting heart rate | Enter a number of at least 30 and no more than 150. |
| Lower intensity (%) | Enter a number of at least 0 and no more than 100. |
| Upper intensity (%) | Enter a number of at least 0 and no more than 100. |
Frequently asked questions
What should I check before using the target heart rate result?
Maximum-heart-rate equations are population estimates. Medicines and health conditions can change safe targets; seek clinical guidance when appropriate.
Is this target heart rate result exact?
It is exact for the stated mathematical model and entered values. Real-world results can differ when rates, timing, fees, definitions or measurement conditions differ.