Heart Rate Calculator

Maximum heart rate (MHR) is the highest heart rate achievable during maximal exertion. The Tanaka formula (208 − 0

The calculator uses the standard published formula for heart rate calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Tanaka MHR = 208 − 0.7 × age (Tanaka et al 2001). Each step in the calculation is shown so you can verify the result manually.