Max Heart Rate Calculator: Formula and Chart by Age
2026-06-16 · 7 min read
Rapid answer
The fastest estimate of max heart rate is 220 minus your age, but the Tanaka formula, 208 minus (0.7 x age), is more accurate, especially over 40. Both are estimates with a 10 to 12 bpm spread. A measured field test is the only way to know your true number.
Your maximum heart rate is the single number every heart rate zone is built from. Get it wrong and all five zones shift with it. The catch is that the formula most people use, 220 minus age, is also the least accurate one. Here is how to estimate it four ways, and how to measure the real thing.
Max heart rate calculator
To estimate your max heart rate, subtract your age from 220 for the quick version, or use the more accurate Tanaka formula: 208 minus (0.7 times your age). A 40-year-old gets 180 bpm from both; a 60-year-old gets 160 from the old formula but 166 from Tanaka. For exact zones built off that number, use a calculator that runs the formulas and your resting heart rate together.
The heart rate zone calculator takes your age and resting heart rate and returns your estimated max plus all five training zones in bpm. If you would rather work it by hand, the formulas below take ten seconds each.
What is maximum heart rate?
Maximum heart rate is the highest number of beats per minute your heart can reach during all-out effort. It is set mostly by age and genetics, not by fitness. A fitter athlete has a lower resting heart rate and a bigger stroke volume, but roughly the same max HR as an unfit person of the same age.
This is the most common misunderstanding about max HR: training does not raise it. What training improves is how much work you can do at any given percentage of that ceiling. The ceiling itself drifts down slowly with age and barely moves with fitness.
How to calculate your max heart rate
There are four widely used formulas. The classic 220 minus age (Fox) is simplest but overestimates for young athletes and underestimates for older ones. Tanaka (208 minus 0.7 times age) is more accurate across the lifespan. Gulati is validated specifically for women, and Nes is drawn from a large modern dataset. They can disagree by 10 to 15 bpm.
| Formula | Equation | Best for |
|---|---|---|
| Fox (classic) | 220 minus age | Quick mental math |
| Tanaka | 208 minus (0.7 x age) | General accuracy, ages 40+ |
| Gulati | 206 minus (0.88 x age) | Women |
| Nes | 211 minus (0.64 x age) | Modern population estimate |
Worked for a 40-year-old:
- Fox: 220 minus 40 = 180 bpm
- Tanaka: 208 minus 28 = 180 bpm
- Gulati: 206 minus 35 = 171 bpm
- Nes: 211 minus 26 = 185 bpm
The 14 bpm spread between Gulati and Nes is exactly why a single formula should be treated as a starting estimate, not a hard number. If you are a woman, Gulati tends to fit better than the male-derived classics.
Max heart rate by age
Because max heart rate declines with age, the estimate falls about 1 beat per year. The table below compares the quick formula (220 minus age) with the more accurate Tanaka formula. Notice they diverge with age: at 60 the difference is 6 bpm, enough to shift every training zone.
| Age | 220 minus age | Tanaka (208 - 0.7 x age) |
|---|---|---|
| 20 | 200 bpm | 194 bpm |
| 25 | 195 bpm | 191 bpm |
| 30 | 190 bpm | 187 bpm |
| 35 | 185 bpm | 184 bpm |
| 40 | 180 bpm | 180 bpm |
| 45 | 175 bpm | 177 bpm |
| 50 | 170 bpm | 173 bpm |
| 55 | 165 bpm | 170 bpm |
| 60 | 160 bpm | 166 bpm |
| 65 | 155 bpm | 163 bpm |
Once you have a max HR, every training zone is a fixed percentage of it. See heart rate zones for the full five-zone breakdown, or Zone 2 heart rate by age for the aerobic-base zone specifically.
How to measure your true max heart rate
A field test is the only way to know your real max instead of an age estimate. Warm up for 15 minutes, run or ride 3 minutes hard, recover 2 minutes, then sprint all-out for 90 seconds up a slight hill. The highest number your monitor records is your measured max HR. It is usually within a few bpm of your true ceiling.
A test like this is genuinely maximal and is not appropriate for unconditioned athletes or anyone with a cardiac history. If you have not trained consistently for at least three months, use a formula instead and check with your doctor before attempting a max effort. A chest-strap monitor reads more reliably than a wrist optical sensor at high intensities, where wrist sensors often drop or lag beats.
Why the 220 formula is often wrong
The 220 minus age formula has a standard deviation of roughly 10 to 12 bpm. That means about a third of people have a true max HR more than 10 bpm away from the estimate, in either direction. Applied to zones, a 10 bpm error in max HR moves each zone boundary by 6 to 7 bpm, which is enough to push an easy run into tempo.
This is not a small rounding issue. Two 35-year-olds can have measured max heart rates of 175 and 195 and both be perfectly healthy. The formula hands them both 185. That is why a one-time field test pays off: every workout afterward is anchored to a number that is actually yours.
Does max heart rate change with age and fitness?
Max heart rate declines slowly with age, by roughly 0.7 to 1 bpm per year, and that decline is unavoidable. Fitness does not raise your max HR. A well-trained athlete and a sedentary person of the same age usually share a similar maximum; the athlete simply operates at a lower percentage of it for the same pace.
If your measured max appears to climb after a training block, the earlier number was almost certainly submaximal, not a real increase. People rarely reach a true max without a structured, fully motivated test.
Max heart rate for running vs cycling
Your cycling max heart rate is typically 5 to 10 bpm lower than your running max, because cycling is seated, non-weight-bearing, and recruits less muscle mass. Measure each sport separately. A running-derived max applied to the bike will read about one zone too high and make easy rides feel deceptively hard to keep in range.
For triathletes this is essential: set and store independent max heart rates for the run and the bike. For the cycling power equivalent of these zones, see FTP zones and the 20-minute test. And remember that max HR sets the ceiling, while your VO2 max determines how much aerobic power you can produce beneath it.
Frequently asked questions
How do I calculate my max heart rate?
The quickest estimate is 220 minus your age. A more accurate option is the Tanaka formula, 208 minus 0.7 times your age, which fits better for athletes over 40. For your true maximum, perform a supervised maximal field test and read the highest value your heart rate monitor records.
Is 220 minus age accurate?
Only roughly. The formula has a standard deviation of about 10 to 12 bpm, so a significant share of people have a real max heart rate well above or below the estimate. It is fine as a starting point but should not be treated as your exact number for precise zone training.
What is a normal max heart rate by age?
Using 220 minus age, a normal estimate is about 200 bpm at age 20, 190 at 30, 180 at 40, 170 at 50, and 160 at 60. Individual maximums vary by 10 bpm or more around these averages, which is completely normal and not a sign of fitness level.
Does max heart rate decrease with age?
Yes. Maximum heart rate falls by roughly 0.7 to 1 beat per minute each year throughout adult life. This decline is driven by age-related changes in the heart's electrical system and happens regardless of how fit you are.
Can I increase my max heart rate with training?
No. Training does not raise your maximum heart rate. What improves is your efficiency: a fitter heart pumps more blood per beat, lowers your resting heart rate, and lets you sustain faster paces at a lower percentage of the same max.