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Target Heart Rate & Training Zones Calculator

Determine aerobic, anaerobic, and fat-burn heart rate zones.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Uses the Karvonen Heart Rate Reserve (HRR) formula to compute personalized cardiovascular training zones.

How to use it (step by step)

  1. 1Fill in the boxes: “Age (years)”, “Resting Heart Rate (BPM)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

SWIFT / BIC
An 8 or 11-letter code that identifies a bank for international transfers.
Age / date difference
Counting the exact years, months and days between two dates, including leap years.

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