Health & FitnessReviewed Methodology
Heart Rate Zone Calculator
A heart rate zone calculator helps you estimate training zones by using age-based maximum heart rate and optional resting heart rate.
Health & FitnessReviewed by Editorial Health Review
Quick answer
Estimated max heart rate is calculated as 220 minus age.
What this tells you
- •Estimated max heart rate is calculated as 220 minus age.
- •Zones are shown by percentage bands from 50% to 100%.
- •Optional resting heart rate adds heart rate reserve zone estimates.
How to Use
- 1Enter age.
- 2Optionally enter resting heart rate for reserve-based estimates.
- 3Calculate to view estimated zone ranges.
- 4Use zones as training guidance, not medical diagnosis.
How It Works
Formula
Estimated Max HR = 220 - Age
Zone Range = Estimated Max HR x Zone %
(HRR Method) Zone = (Max HR - Resting HR) x Zone % + Resting HRThe tool provides both standard percentage-of-max zones and optional heart-rate-reserve zones when resting heart rate is provided.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Zone estimate for age 30
Age30
Resting heart rate60 bpm
ResultEstimated max HR: 190 bpm with zone ranges by intensity
Use these ranges as planning estimates and adjust training with coaching or clinical guidance when needed.
Common mistakes
- Treating age-based max heart rate equations as exact for everyone
- Ignoring medication or health conditions that affect heart rate response
- Using zone estimates as a substitute for medical evaluation
Limitations
This tool uses population-level equations and percentage bands. Individual variation can be large. It does not account for medical history, medications, diagnostics, or exercise test data.
Frequently Asked Questions
No. It is a common estimate, but individual max heart rate can vary significantly.
Heart rate reserve is max heart rate minus resting heart rate and can provide a more personalized training range estimate.
No. This tool is for training guidance estimates only and does not diagnose medical conditions.