Heart Rate Zone Calculator
Free heart rate zone calculator — get instant, accurate results. No sign-up required.
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Zone 2 (Light / Aerobic)
140–153 bpm
Estimated Max HR
190 bpm
Zone 1 (Very Light)
128–140 bpm
Zone 2 (Light)
140–153 bpm
Zone 3 (Moderate)
153–165 bpm
Zone 4 (Hard)
165–178 bpm
Zone 5 (Maximum)
178–190 bpm
What Is the Heart Rate Zone Calculator?
The Heart Rate Zone Calculator is a free online tool for cardio & endurance planning. Enter your details above to get instant personalised results.
How to Use It
Fill in the fields and your result will update instantly. No account needed.
Why It Matters
Tracking the right metrics is one of the most effective ways to make consistent progress toward your health and fitness goals.
This tool provides estimates for informational purposes only.
Results are based on general formulas and may not reflect individual circumstances.
Consult a qualified professional for personalised advice.