Max Heart Rate Calculator
Calculate your maximum heart rate using Tanaka, 220−Age, and other formulas
Max Heart Rate Calculator
Calculate your maximum heart rate using Tanaka, 220−Age, and other formulas
What is Maximum Heart Rate?
Maximum heart rate (MHR or HRmax) is the highest number of beats per minute your heart can achieve during maximum physical exertion. It is a fundamental physiological parameter used to personalise exercise intensity — all heart rate training zones are derived as percentages of your MHR.
Unlike resting heart rate, MHR does not improve with fitness. It is largely determined by age and genetics — it typically decreases by approximately one beat per minute per year after the age of 20. This is why all the common MHR formulas are based on age as the primary input.
The classic "220 minus age" formula is the most widely known but is also the least accurate for individuals over 50. The Tanaka formula (208 − 0.7 × age), developed from a meta-analysis of 351 studies, is the most validated general-population formula and is recommended for athletes and older adults. This calculator shows all four major formulas side-by-side and gives your five training zones based on your chosen result.
How to Use This Calculator
Typical Max Heart Rate Ranges by Age
- • Age 20: ~194–200 bpm depending on formula
- • Age 30: ~187–193 bpm
- • Age 40: ~180–186 bpm
- • Age 50: ~171–178 bpm
- • Age 60: ~164–168 bpm
Why MHR Formulas Get Misused as Fitness Scores
A common misconception is that a higher max heart rate means better fitness — it doesn't. MHR is set almost entirely by age and genetics and doesn't meaningfully change with training, so comparing your MHR to a fitter friend's tells you nothing about relative fitness. What training does improve is heart rate reserve (the gap between resting and max HR) and how efficiently the heart uses each beat, not the ceiling itself.
Coaches actually care more about heart rate reserve than raw MHR for setting accurate training zones, since the Karvonen method (using HRR) accounts for individual differences in resting heart rate that a simple percentage-of-MHR method ignores — two runners with identical MHR but very different resting heart rates need meaningfully different training zone boundaries.
Before a major race, a real field-test MHR (from an all-out effort like a hard 3K time trial) is worth more than any formula, since individual MHR can vary by ±10-12 bpm around population-based estimates — a difference large enough to meaningfully shift where your training zones actually fall.
?Frequently Asked Questions
For most adults, the Tanaka formula (208 − 0.7 × age) is more accurate than the classic 220 − age. It was derived from a meta-analysis of 351 published studies and over 18,000 subjects. The classic formula can overestimate MHR in younger people and underestimate it in those over 50. Both are still estimates — individual MHR can vary by ±10–12 bpm around any population-based formula.
Reaching true MHR requires near-maximal or maximal effort — sprint intervals, hill repeats, or a final kick at the end of a race. Most training sessions, even hard ones, stay in zones 3–4 (70–90% MHR). Zone 5 training (90–100% MHR) is valuable for VO₂ max development but is taxing and should represent only a small portion of weekly training volume.
No — MHR is not significantly affected by fitness level. A well-trained runner and a sedentary person of the same age will have approximately the same MHR. What fitness does change is resting heart rate (lower in fit individuals) and stroke volume (the heart pumps more blood per beat). The Heart Rate Reserve (MHR minus resting HR) is larger in fitter people.
Training zones are defined as percentages of MHR. Zone 1 is 50–60% — easy recovery. Zone 2 is 60–70% — aerobic base and fat burning. Zone 3 is 70–80% — moderate effort. Zone 4 is 80–90% — lactate threshold, tempo work. Zone 5 is 90–100% — VO₂ max intervals. Knowing your MHR means you can set accurate zones for your GPS watch or heart rate monitor.
No — this is one of the most common misunderstandings about MHR. Maximum heart rate is set largely by age and genetics and does not meaningfully change with training. What improves with fitness is resting heart rate (lower) and stroke volume (more blood pumped per beat), giving fitter people a wider heart rate reserve to work with, not a higher ceiling. Comparing your MHR to someone else's tells you nothing about who is fitter.
A supervised, all-out effort test — such as a hard 1500m-3000m time trial after a thorough warm-up, finishing with a maximal final sprint — gives a reasonably reliable real-world MHR reading for healthy, experienced runners. This carries genuine cardiovascular strain, so it's not recommended for beginners, older adults, or anyone with underlying heart conditions without medical clearance first; a formula-based estimate is the safer default for those groups.
MHR is typically 5-10 bpm lower on a bike than while running, because cycling recruits a smaller total muscle mass and the seated position reduces the cardiovascular demand needed to circulate blood against gravity compared to the full-body, weight-bearing effort of running. This is a well-documented, consistent difference — not a sign of inconsistent fitness — and it's why triathletes typically calculate separate heart rate zones for each discipline rather than using one MHR across both.