Heart Rate Zone Calculator

Find your maximum heart rate and the five training zones from your age.

years

Estimated max heart rate
190bpm
Zone 1 — Very light (50–60%)

95–114 bpm

Zone 2 — Light / fat burn (60–70%)

114–133 bpm

Zone 3 — Moderate / aerobic (70–80%)

133–152 bpm

Zone 4 — Hard / anaerobic (80–90%)

152–171 bpm

Zone 5 — Maximum (90–100%)

171–190 bpm

Formula
Max HR = 220 − age; each zone = a percentage band (50–60%, 60–70%, 70–80%, 80–90%, 90–100%) of Max HR.
Examples
InputResult
Age 30Max HR ≈ 190 bpm; Zone 2 ≈ 114–133 bpm

About this calculator

Heart rate training zones divide the range up to your maximum heart rate into bands that target different fitness adaptations. The simple and widely used estimate for maximum heart rate is 220 minus your age. Multiplying that maximum by each zone percentage gives the beats-per-minute range to aim for during a workout.

Lower zones (1–2) suit warm-ups, recovery, and building an aerobic base while burning a higher proportion of fat. Middle zones (3) improve aerobic capacity, and higher zones (4–5) develop speed and anaerobic power but should be used sparingly. Because the 220-minus-age formula is an estimate that varies between individuals, treat these numbers as a guide and adjust based on how you feel and on data from a chest-strap monitor.

Frequently asked questions

It is a population average and can be off by 10–20 bpm for an individual. A measured maximum from a stress test is more precise.

Zone 2 burns a higher percentage of calories from fat, but higher zones burn more total calories, so both support fat loss differently.

Most endurance plans spend the bulk of time in zones 1–2 with short, focused efforts in zones 4–5.

Did this calculator help you?