How to Calculate Heart Rate

What is Heart Rate?

Maximum heart rate (MHR) is the highest heart rate achievable during maximal exertion. The Tanaka formula (208 − 0.7 × age) is more accurate than the older 220 − age formula. Heart rate training zones, calculated using the Karvonen method (which accounts for resting heart rate), allow precise training intensity targeting.

Formula

Tanaka MHR = 208 − 0.7 × age (Tanaka et al 2001)

MHR: 208 − 0 — 208 − 0

Step-by-Step Guide

1Tanaka MHR = 208 − 0.7 × age (Tanaka et al 2001)
2Heart Rate Reserve (HRR) = MHR − Resting HR
3Target HR = (HRR × intensity%) + Resting HR (Karvonen)
4Zone 1 = 50–60% HRR (recovery), Zone 5 = 90–100% HRR (max effort)

Worked Examples

Input

Age 35

Result

Max HR ≈ 185 bpm · 50–85% zone: 93–157 bpm

Frequently Asked Questions

What is Heart Rate Calc?

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

How accurate is the Heart Rate Calc calculator?

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.

What units does the Heart Rate Calc calculator use?

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

What formula does the Heart Rate Calc calculator use?

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.

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