XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.
Heart Rate Zone Calculator helps you estimate heart rate training zones from age and resting heart rate. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step.
Estimate heart rate training zones from age and resting heart rate. It is designed for runners, cyclists, athletes, fitness users, and people planning cardio training who want a fast, browser-based estimate before relying on a doctor, dietitian, trainer, coach, pregnancy care provider, public safety source, or other professional source.
People use this calculator when they need a quick way to estimate health, wellness, fitness, nutrition, timing, body composition, or training values from simple inputs.
Max Heart Rate ≈ 220 - age; zone ranges are calculated as percentages of max heart rate or heart rate reserve.
Example inputs: Age: 35; Resting Heart Rate: 60 bpm; Method: Heart Rate Reserve
Example result: Using the default inputs, max heart rate is about 185 bpm and training zones are estimated from the selected method.
Yes. This calculator is free to use on XTRAW Tools.
No. XTRAW tools are designed for browser-based use without requiring an account.
Results may be estimates depending on the inputs, formula, and purpose of the calculator. Always verify important results before relying on them.
Disclaimer: This calculator is provided for general informational and convenience purposes only. It is not legal, financial, medical, tax, investment, insurance, accounting, pregnancy, health, fitness, nutrition, safety, or professional advice. Always verify important results with a qualified professional or authoritative source before making decisions.