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Heart Rate Zone Calculator

Find your target heart rate zones for cardio and fat burn.

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Heart Rate Zone Calculator

Calculate your target heart rate training zones.

Maximum Heart Rate
190 BPM
Zone 1 (Very Light)
50-60% of Maximum
95 - 114 BPM
Zone 2 (Light)
60-70% of Maximum
114 - 133 BPM
Zone 3 (Moderate)
70-80% of Maximum
133 - 152 BPM
Zone 4 (Hard)
80-90% of Maximum
152 - 171 BPM
Zone 5 (Maximum)
90-100% of Maximum
171 - 190 BPM

About Heart Rate Zone Calculator

Calculate heart rate training ranges by age. Optimize your workouts for endurance and heart health.

100% Client-Side

Your files and data are processed locally in your browser memory. Never uploaded to remote servers.

Zero Login Required

Instant access with no account, no email sign-up, no passwords, and no subscription paywalls.

Instant Speed

Powered by modern WebAssembly and native web APIs for near-instant rendering and zero latency.

Privacy Guaranteed

Zero data retention, no user tracking cookies, and GDPR/HIPAA friendly. Your data remains strictly yours.

All Devices Ready

Fully responsive on desktop, tablet, and mobile devices without installing software or extensions.

How to Use

  1. Enter your age.
  2. Optionally enter your resting heart rate for the Karvonen method.
  3. Click Calculate to compute your Heart Rate Zone Calculator results instantly.
  4. View your BPM ranges for different exercise intensities.

Frequently Asked Questions