Max Heart Rate Calculator

Calculate your maximum heart rate using scientifically recognized formulas. We use gender-specific calculations: the Tanaka formula for men and the research-backed Gulati formula for women. Fox (220 − age) is shown only as a historical reference so you can see how the estimates differ by age.

Calculate Your Max Heart Rate

Disclaimer: This calculator is for informational purposes only and does not provide medical advice. Always consult with a healthcare professional before starting any new exercise program.

Key Takeaways

220 − age is a rough guide
The Fox formula was popularized in the 1970s and can be ±15 bpm off for individuals.
Tanaka & Nes are more accurate
Both are derived from thousands of real measurements. Tanaka is our default for men.
Women should use Gulati
206 − 0.88·age, from 5,437 female participants — our default for women.
Genetics move you ±10–15 bpm
Twin studies attribute about half the variation between people to inheritance.
Sport matters
HRmax can differ between cycling, running and swimming; the gap varies by person.
A field test beats a formula
5-minute maximal hill effort, chest strap, take the higher of two attempts.

How the Five Formulas Diverge by Age

Every popular HRmax formula gives a different number for the same person. The spread is small in your twenties and grows sharply after age 50. The table below shows the predicted HRmax at ten-year intervals for each formula, and the maximum gap between them at each age — data you can use to judge whether your calculated number is a firm ceiling or a rough estimate.

AgeFox
220 − age		Tanaka
208 − 0.7·age		Gellish
207 − 0.7·age		Nes (HUNT)
211 − 0.64·age		Gulati (♀)
206 − 0.88·age		Spread
2020019419319818812 bpm
3019018718619218012 bpm
4018018017918517114 bpm
5017017317217916217 bpm
6016016616517315320 bpm
7015015915816614422 bpm

Reading the table: at age 20 all five formulas agree within about 7 bpm. At age 60 the same formulas differ by up to 15 bpm — enough to shift a "Zone 2" ceiling from the low end of aerobic base into tempo territory. This is why picking the right formula matters most for masters athletes and older adults.

The HUNT Study: Why 220 − Age Overestimates for Fit Adults

The Fox formula (220 − age) was never derived from a controlled study. It was an approximation popularised in the 1970s. In 2013, Bjarne Nes and colleagues at the Norwegian University of Science and Technology published a much larger analysis based on the Nord-Trøndelag Health Study (HUNT), measuring peak heart rate directly in 3,320 healthy adults aged 19–89 during a maximal treadmill test.

Their finding: HRmax = 211 − 0.64 × age, with a residual standard deviation of ±10.8 bpm. Body composition, sex, physical activity level, and VO₂max explained less than 1% of additional variance — meaning age alone is the dominant predictor, but individual biology still shifts the number by roughly a full training zone.

The practical consequence: Fox tends to overestimate HRmax for well-trained adults in their 30s–50s, and underestimate it for older, less-active people. Nes and Tanaka correct this drift; both are better defaults than Fox for anyone over 40.

Reference: Nes BM, Janszky I, Wisløff U, Støylen A, Karlsen T. Age-predicted maximal heart rate in healthy subjects: The HUNT Fitness Study. Scandinavian Journal of Medicine & Science in Sports. 2013;23(6):697–704.

How to Measure Your Actual HRmax in the Field

  1. Formulas are estimates. Age-based formulas such as Tanaka (used by our calculator for men) and Gulati (for women) give population-based estimates, and your individual maximum can differ noticeably from them.
  2. Your highest workout reading is not your true maximum. Ordinary exercise may show the highest heart rate you reached in that session, but that number should not automatically be treated as your actual maximum heart rate.
  3. Accurate measurement needs supervision. If you need an accurate HRmax, it may require professionally supervised exercise testing.
  4. Train with estimates plus feel. For everyday training, use your estimated heart rate zones together with perceived exertion and the talk test.

Six Factors That Shift Your Real HRmax Away From the Formula

1. Beta-blockers and rate-limiting medication

Beta-blockers can lower HRmax by 20–30 bpm. Calcium channel blockers and some antidepressants also blunt peak heart rate. Age-based formulas do not apply — use perceived exertion or a supervised test.

2. Genetics

Twin studies attribute roughly half the individual variation in HRmax to inheritance. Some healthy adults are simply 10–15 bpm above or below their formula prediction from birth.

3. Training modality

HRmax is often lower on the bike than running, and lower again in swimming — smaller working muscle mass returns less venous blood. The difference varies between individuals, so a fixed bpm adjustment is not reliable; use sport-specific HRmax when possible.

4. Heat, altitude, and dehydration

Peak HR falls in high heat once core temperature rises, and again at altitude above ~2,500 m. Dehydration of just 2% body weight can drop HRmax by 3–5 bpm.

5. Overtraining and fatigue

Chronic fatigue suppresses maximal HR — a well-documented marker of overreaching. If your peak HR in hard intervals is trending down over weeks while perceived effort stays high, back off.

6. Stimulants

Caffeine can raise measured HR at any submaximal intensity by 3–5 bpm, but does not meaningfully change true HRmax. Beta-agonists (some asthma inhalers) can.

Understanding Max Heart Rate Formulas

Fox Formula: 220 − Age

The most commonly used formula, developed in the 1970s. Simple to calculate but may overestimate max heart rate in younger individuals and underestimate it in older adults.

Best for: Quick estimates, general use for men

Tanaka Formula: 208 − (0.7 × Age)

Published in 2001 based on a meta-analysis of 351 studies involving 18,712 participants. Generally considered more accurate, especially for adults over 40 years old.

Best for: Adults 40+, anyone seeking greater accuracy

Gulati Formula: 206 − (0.88 × Age)

Developed specifically for women based on research with 5,437 asymptomatic women. This formula accounts for physiological differences in female cardiovascular response and provides more accurate estimates for women.

Best for: Women of all ages

Which Should You Use?

We recommend the Tanaka formula for men and the Gulati formula for women as defaults, with Fox kept only as a historical reference. All formulas provide estimates—individual variation can be 10-15 bpm from calculated values. For the most accurate results, consider a supervised max heart rate test. Learn more in our frequently asked questions.

Bottom line
Use Tanaka if you are a man, Gulati if you are a woman, and Nes as a cross-check if you are highly trained — Fox (220 − age) is only a rough sanity check. If any of those numbers is more than 15 bpm from your measured peak in hard intervals, trust the measurement.

What should I do with this number?

Apply your HRmax next

Calculate all five training zones
Complete zones with gender-specific formulas.
Find your Zone 2 range
The most important aerobic zone.
Use Karvonen with resting HR
More precise zones using your reserve.
Learn the full 5-zone system
How Zone 1–5 fit together.
Structure an 80/20 training week
Dr. Seiler's polarized method.
Cycling-specific max HR
Why bike HRmax runs lower than run.

Want to see how the equations differ at every age? Read Max Heart Rate Formulas Compared: Fox vs Tanaka vs Gellish vs Nes vs Gulati.

Max heart rate by age

Maximum Heart Rate Calculator

Calculate your maximum heart rate (HRmax) using Tanaka (208 − 0.7 × age) for men and Gulati (206 − 0.88 × age) for women, with Gellish (207 − 0.7 × age), Nes (211 − 0.64 × age) and the Fox (220 − age) reference shown side-by-side.

Quick Answer: What is my maximum heart rate?

Maximum heart rate is estimated from age. Using Tanaka (208 − 0.7 × age), a 30-year-old man has an estimated HRmax of about 187 bpm and a 50-year-old about 173 bpm. Using Gulati (206 − 0.88 × age) for women, a 50-year-old has an estimated HRmax of about 162 bpm. These are estimates with roughly ±10–12 bpm of individual variation; only a supervised maximum-effort test measures your true HRmax.

Estimated Zone 2 (easy aerobic) at 60–70% of estimated maximum heart rate, by age. Men use Tanaka (208 − 0.7 × age); women use Gulati (206 − 0.88 × age). Values are population estimates, not measured maximums.
Age Est. HRmax, men (Tanaka) Zone 2 (easy aerobic) bpm, men Est. HRmax, women (Gulati) Zone 2 (easy aerobic) bpm, women
20194116–136188113–132
25191115–134184110–129
30187112–131180108–126
35184110–129175105–123
40180108–126171103–120
45177106–124166100–116
50173104–12116297–113
55170102–11915895–111
60166100–11615392–107
6516398–11414989–104
7015995–11114486–101

Why the men's and women's columns differ: the zone percentages are identical for both — 60–70% of HRmax is Zone 2 regardless of sex. Only the equation used to estimate HRmax differs: Tanaka (208 − 0.7 × age) is used for men and Gulati (206 − 0.88 × age), derived from a study of 5,437 women, is used for women. Because Gulati declines faster with age, the two estimates are close in the twenties and diverge by roughly 10 bpm by age 60. That gap reflects the study population each equation came from, not a different physiological zone model — and individual variation (±10–12 bpm) is larger than the difference between the formulas.

How to read these numbers: they are estimated maximum heart rates from age-based equations, not measured maximums. Individual HRmax varies by roughly ±10–12 bpm around any age prediction, so treat the bands as a starting range and adjust using perceived effort or a supervised maximum-effort test. Percent-of-HRmax zones are used here; Karvonen (heart-rate-reserve) zones are only shown once you enter a known resting heart rate.

Method: percentage of estimated HRmax. Formulas: Tanaka et al. 2001 (men), Gulati et al. 2010 (women). Last reviewed . Educational information only — not medical advice.

Maximum Heart Rate Formulas

No formula is universally “correct.” The only way to know your true HRmax is a supervised maximum-effort test.

How the Five Formulas Diverge by Age

Every popular HRmax formula gives a different number for the same person. The spread is small at age 20 and grows to 15 bpm by age 60 — enough to shift a Zone 2 ceiling into tempo territory. This is why picking the right formula matters most for masters athletes and older adults.

Age Fox (220−age) Tanaka Gellish Nes (HUNT) Gulati (♀) Max spread
2020019419319818812 bpm
3019018718619218012 bpm
4018018017918517114 bpm
5017017317217916217 bpm
6016016616517315320 bpm
7015015915816614422 bpm

The HUNT Study: Why 220 − Age Overestimates for Fit Adults

The Fox formula (220 − age) was never derived from a controlled study — it was a 1970s approximation. In 2013, Nes and colleagues at NTNU published the HUNT Fitness Study, measuring peak heart rate in 3,320 healthy adults aged 19–89 during a maximal treadmill test. Their result: HRmax = 211 − 0.64 × age, with a residual standard deviation of ±10.8 bpm. Body composition, sex, physical activity level and VO₂max explained less than 1% of additional variance.

Practical consequence: Fox overestimates HRmax for well-trained adults in their 30s–50s and underestimates it for older, less-active people. Nes and Tanaka correct this drift and are better defaults for anyone over 40.

Reference: Nes BM, Janszky I, Wisløff U, Støylen A, Karlsen T. Age-predicted maximal heart rate in healthy subjects: The HUNT Fitness Study. Scand J Med Sci Sports. 2013;23(6):697–704.

How to Measure Your Actual HRmax in the Field

  1. Formulas are estimates. Age-based formulas such as Tanaka (used by our calculator for men) and Gulati (for women) give population-based estimates, and your individual maximum can differ noticeably from them.
  2. Your highest workout reading is not your true maximum. Ordinary exercise may show the highest heart rate you reached in that session, but that number should not automatically be treated as your actual maximum heart rate.
  3. Accurate measurement needs supervision. If you need an accurate HRmax, it may require professionally supervised exercise testing.
  4. Train with estimates plus feel. For everyday training, use your estimated heart rate zones together with perceived exertion and the talk test.

Repeated unsupervised maximal-effort or exhaustion tests are not recommended as general advice. This is especially important if you have a heart condition, take medication that alters heart rate, or have not been cleared for vigorous exercise by a clinician.

Six Factors That Shift Your Real HRmax Away From the Formula

Heart Rate Zones (reference: age 30, HRmax ≈ 187 bpm, Tanaka)

Zone Name % HRmax BPM (age 30) Primary use
1Recovery50–60%94–112Warm-up, recovery, active rest
2Endurance60–70%112–131Aerobic base, fat oxidation
3Aerobic70–80%131–150Tempo, aerobic capacity
4Hard80–90%150–168High-intensity, threshold-oriented work (not the same as measured LTHR)
5Maximum90–100%168–187Very-high-intensity, VO₂max-oriented intervals (reaching it does not prove VO₂max)

Frequently Asked Questions

How accurate are heart rate calculators?

Formula-based calculators typically estimate HRmax within ±10–15 bpm. They are accurate enough to structure training for recreational athletes but not a substitute for a supervised max test.

What is the Karvonen method?

Karvonen uses heart rate reserve (HRR = HRmax − HRrest). Target HR = HRrest + (Intensity% × HRR). It personalises zones by accounting for resting heart rate.

Should I use different zones for cycling vs running?

Often, yes. Heart-rate zones can differ between running and cycling because physiological thresholds and heart-rate responses may vary by activity — many people see a lower heart rate on the bike at a similar effort, but the size of the difference is individual. Percentage-based zones are estimates, not measurements of your thresholds. For more precise training, establish your zones for the sport you perform, for example with a sport-specific test or the talk test.

Is Zone 2 the best zone for fat loss?

Zone 2 maximises the percentage of calories from fat, but higher intensities burn more total calories per minute. Long-term fat loss is driven by total weekly energy balance.

Disclaimer: This calculator is for informational purposes only and does not provide medical advice. Always consult with a healthcare professional before starting any new exercise program.