Heart Rate Zone Calculator

Find your optimal heart rate zones for different types of exercise.

Measure when you wake up

How to Measure Resting Heart Rate

  • Measure first thing in the morning before getting out of bed
  • Use your index and middle fingers on your wrist or neck
  • Count beats for 60 seconds (or 30 seconds × 2)
  • Average over 3-5 days for accuracy

Use Shawon Calculators' free heart rate zones to get instant, accurate results directly in your browser. No data is stored or transmitted — all calculations happen locally on your device for complete privacy.

Heart Rate Zones — Free Online Calculator

Calculate your heart rate training zones for optimal exercise. Based on max heart rate and resting heart rate. Free calculator. Part of our Health calculators collection, trusted by students, professionals, and everyday users worldwide.

100% Accurate Uses verified mathematical formulas
Completely Free No registration or payment needed
Private & Secure Data stays in your browser
Works Everywhere Desktop, tablet, and mobile

How to Use This Heart Rate Zones

1
Enter Values

Input your numbers into the calculator fields

2
Get Results

Results are calculated instantly as you type

3
Use or Share

Copy results or use them for your needs

Why Choose Shawon Calculators?

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Verified Accuracy

Uses standard mathematical formulas and algorithms verified against professional tools.

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100% Private

Your data never leaves your device. All calculations happen locally in your browser.

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Completely Free

No hidden fees, no registration. 51+ calculators available for unlimited use.

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Any Device

Responsive design works perfectly on desktop, tablet, and mobile browsers.

Frequently Asked Questions

What are heart rate zones?

Heart rate zones are ranges of heartbeats per minute that correspond to exercise intensity levels: Zone 1 (50-60% max, recovery), Zone 2 (60-70%, fat burning), Zone 3 (70-80%, aerobic), Zone 4 (80-90%, threshold), Zone 5 (90-100%, max effort).

How is max heart rate estimated?

The common formula is 220 minus your age. More accurate formulas like Tanaka (208 - 0.7 × age) are also used.

Is it free?

Yes, completely free.

Is my data private?

Yes. All calculations happen in your browser.

Who Uses This Heart Rate Zones?

👨‍💻 Health-conscious individuals tracking body metrics and nutrition
📊 Fitness enthusiasts planning workouts and diet programs
🎓 Medical students studying human physiology measurements
🏢 Healthcare professionals performing quick patient assessments

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