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Heart Rate Zone Calculator

Calculate your estimated maximum heart rate and target heart rate zones for different exercise intensities.

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How It Works

How heart rate zones are calculated

This calculator uses the common formula: Maximum Heart Rate = 220 − Age. Each training zone is then calculated as a percentage range of that maximum, from Zone 1 (light warm-up intensity) up to Zone 5 (maximum effort).

What each zone is used for

Zone 2 is often targeted for fat-burning and base endurance training, Zone 3 for general aerobic fitness, and Zones 4-5 for high-intensity interval training and performance gains. Training across different zones supports different fitness goals.

Frequently Asked Questions

How accurate is the 220 minus age formula?

It's a widely used general estimate, but individual maximum heart rate can vary meaningfully from this formula. A supervised fitness or medical test provides a more precise personal figure.

Should I consult a doctor before high-intensity training?

If you have any heart conditions or are new to exercise, consulting a healthcare provider before starting high-intensity training is recommended.

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