MHR Calculator

June 8, 2026

This MHR Calculator helps you estimate your Maximum Heart Rate (MHR), which is the highest number of heartbeats per minute your heart can reach during intense exercise.

Maximum Heart Rate Calculator

Enter your age:

MHR Formula

MHR = 220 − age (years)

Parameters Explained

Age: measured in years

How It Works

The calculator subtracts your age from 220 to estimate your maximum heart rate, which can be used to guide exercise intensity and heart rate training zones.

Ethan Caldwell

Ethan builds the interactive health calculators on Height Growth Blog. Based in Denver, Colorado, he combines a software engineering background with a focus on evidence-based health tech, turning dense clinical guidelines — from CDC growth charts to NIH/IOM dietary references — into tools parents and teens can use in under a minute. Every calculator on the site, from BMI Percentile to Body Fat and Calcium Intake, is built directly from primary sources (NIH, AAP, CDC, Mayo Clinic) and cross-checked against peer-reviewed studies before launch.

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