What you get
Estimate a target heart-rate zone to guide workout intensity.
How to use it
Enter only the requested values and check the unit shown beside each field. The main result gives the figure to use first. Details explain conversions, secondary quantities and rounding. Change any value to compare another situation without starting again.
Before using the result
Use recent information and treat the result as a guide, not a diagnosis or prescription. Health, training level and personal goals can change how it should be interpreted.