Free Online Tool

Heart Rate Calculator

Find your max heart rate and personalized training zones for fat burn and cardio

Reviewed by Prime Metric • Updated September 2026 WhatsApp

Enter Your Details

Measure first thing in the morning, before coffee.

Your Result

Max heart rate (220 − age)

190 bpm

Resting: 70 bpm

Zone 1 · Recovery (Very light / warm-up)95114 bpm
Zone 2 · Fat Burn (Light / fat-burn)114133 bpm
Zone 3 · Cardio (Moderate / aerobic)133152 bpm
Zone 4 · Threshold (Hard / anaerobic)152171 bpm
Zone 5 · Peak (Maximum effort)171190 bpm

About this Tool

Your maximum heart rate is estimated as 220 minus your age, and each training zone is a percentage band of that maximum. This calculator splits your max into 5 standard zones — from easy recovery up to all-out peak effort — so every workout can target the right intensity.

Common Use Cases

Fat-Burn Workouts

Stay in Zone 2 (60–70%) for long, steady sessions that prioritize fat as fuel.

Cardio Fitness

Train in Zone 3 (70–80%) to build aerobic endurance and heart efficiency.

Interval Training

Push into Zones 4–5 for short bursts that raise speed and VO2 max.

Safe Exercise

Older adults and beginners use zones to avoid overexertion during workouts.

Pro Tips

  • !

    220 − Age Is An Estimate

    Individual max HR varies ±10–15 bpm — a lab or field test is more precise.

  • !

    Measure Resting Right

    Check your pulse for 60 seconds right after waking, lying still, for 3 mornings and average them.

  • !

    Use A Monitor

    Wrist or chest-strap monitors keep you honestly inside the target zone during training.

FAQs

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