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Heart Rate Zones Calculator

Five training zones from your max heart rate.

Compute the five classic training heart-rate zones from your estimated max heart rate so you can target the right intensity for each workout.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

bpm

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Zones are percentage bands of HRmax: Z1 50–60%, Z2 60–70%, Z3 70–80%, Z4 80–90%, Z5 90–100%.

In depth

Compute the five classic training heart-rate zones from your estimated max heart rate so you can target the right intensity for each workout.