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Max heart rate

Estimate maximum heart rate using age-based formulas.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Results update as you type. The formula and assumptions are explained below the calculator.

Estimated max heart rate

187 bpm

Heart rate reserve127 bpm
60–70% of reserve136–149 bpm
80–90% of reserve162–174 bpm
Formula usedTanaka

Estimate from age-based formulas, which are population averages. A measured maximum or field test is more accurate.

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What does this tool do?

Maximum heart rate is the highest rate you can sustain during all-out effort. Since a lab test is not practical for most people, this calculator compares the common 220 − age formula with the Tanaka and Gulati alternatives.

The Formula

Standard: 220 − Age; Tanaka: 208 − 0.7 × Age; Gulati: 206 − 0.88 × Age

Frequently Asked Questions

Which maximum heart rate formula is best?

Tanaka is often more accurate across ages, and Gulati was developed for women. All are population averages, so a measured value is better if you have one.

Can I exercise by max heart rate alone?

Heart rate is one input. Perceived effort, breathing and training history also matter, and heart rate can be affected by heat, caffeine and medication.