Use this cycling heart rate zone calculator to estimate training zones from max heart rate, heart-rate reserve, or cycling threshold heart rate.
Cycling Heart Rate Zone Calculator
Estimate cycling heart-rate training zones from max heart rate, resting heart rate, or lactate-threshold heart rate.
How to use this calculator
Enter the values that match your bike, body, route, training data, or shipping box. Change one input at a time if you want to see which detail moves the result most.
What the result means
Zones are training estimates. Medication, heat, dehydration, fatigue, cardiac history, and inaccurate max or threshold values can change safe targets.
Related Icebike tools and guides
- cycling FTP calculator
- cycling power calculator
- bike calories burned calculator
- cycling climb time calculator
This calculator is for practical planning and comparison. It does not replace a professional bike fit, mechanic inspection, medical guidance, carrier quote, manufacturer specification, or local safety judgment.
