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  3. Target Heart Rate Calculator

Target Heart Rate: Guide

Calculate your target heart rate zones

  • What is THR?
  • Formulas
  • Tips
  • How to Use
  • Real-World Applications
  • FAQs

What is THR?

Ideal heartbeat range during exercise for cardiovascular benefits.

The Target Heart Rate Calculator helps you perform fast, accurate calculations based on your inputs.

It is designed for practical decision-making with clear and actionable outputs.

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Formulas

Max HR = 220 − Age

Karvonen: THR = ((Max − Resting) × %) + Resting

Results are computed using standard formulas tied to the selected calculator type and inputs.

Any input update recalculates the results instantly.

Tips

  • Fat Burn 50-70% max HR
  • Cardio 70-85% max HR
  • Focus on Find your ideal heart rate zones for burning fat or cardiovascular training using Fox-Haskell or Tanaka.

How to Use

  • Enter the required values in these fields:
  • - Age
  • - Resting Heart Rate
  • Review the instant output and compare scenarios before finalizing your decision.

Real-World Applications

This calculator supports multiple use cases as shown in the table below.

TypeDescription
Fox-Haskell FormulaThe standard 220-Age formula used by most fitness devices
Tanaka FormulaA more modern, slightly more accurate formula for older adults
Karvonen Method (Heart Rate Reserve)Factors in resting heart rate for personalized zones

FAQs

Are the results accurate?

Yes, results are computed using standard formulas based on the inputs provided.

Why does a small input change affect the output significantly?

Some formulas are sensitive to inputs, so even small changes can produce noticeable output differences.

Formula: HRmax = 220 - age; Target zone = HRmax x intensity band

e.g. age 35, 70-80% band -> HRmax 185 -> 130-148 bpm

yrs
Zone Low133bpm
Zone High152bpm
Center143bpm
Zone range: 133–152 bpm
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