Use this calculator to estimate a general training zone range, not a diagnostic or clinical heart-rate prescription.
Inputs
The strongest pages in the library pair the live calculator with a topic guide and, where it helps, a printable reference you can reuse offline.
A stronger quick-reference sheet for one-rep max, pace, and heart-rate style training metrics.
A more substantial performance guide for pace and heart-rate planning, designed to keep effort zones and pacing decisions practical.
Use this calculator to estimate a practical target heart-rate range for exercise planning based on age and the lower and upper intensity percentages you choose.
The main result shows the estimated target range in beats per minute, with the estimated maximum heart rate listed underneath.
This calculator uses the common 220 minus age estimate. Real training zones can vary and may need more individualised assessment.
Use the Calorie Burn Calculator as a general planning estimate with clear assumptions and careful interpretation.
Calculate pace per kilometre or mile from the distance and finish time you enter, with clean support for running and walking scenarios.
Estimate a daily hydration target from body weight, activity, and climate using a cautious planning-oriented approach.
Estimate body mass index from height and weight using metric or imperial inputs, with screening-focused interpretation rather than medical claims.