Derived from direct measurement of 3,320 healthy adults. Enter your age to get your estimated max HR and all 5 training zones.
Corrects the systematic underestimate in 220-minus-age.
Nes Max HR
--bpm
Zone 2 Range
--bpm
★ Sweet Spot
Your training zones
What Is the Nes Formula?
The Nes formula estimates maximum heart rate by subtracting 0.64 times your age from 211. It was derived from the HUNT Fitness Study (Health Study of Nord-Trøndelag), a large Norwegian cohort study of 3,320 healthy adults aged 19 to 89, conducted at the Norwegian University of Science and Technology.
Max Heart Rate = 211 − (0.64 × Age)
The research was published by Nes et al. in the Scandinavian Journal of Medicine & Science in Sports in 2013. The key finding: directly measured MHR in healthy adults over 30 was consistently higher than formulas like 220-minus-age predicted. The actual rate of decline is 0.64 bpm per year, not the 1.0 bpm that 220-minus-age assumes, and not the 0.7 bpm in the Tanaka formula. The study also found no interaction with gender, fitness level, VO2max, or BMI, meaning the formula applies broadly to healthy adults.
That 0.36 bpm-per-year difference between Nes and 220-minus-age compresses over short age ranges but becomes meaningful across decades. A 60-year-old using 220-minus-age gets an estimated MHR of 160 bpm. Nes puts the same person at 173 bpm. Zone 4 on the 220-minus-age scale sits at 128–144 bpm; on the Nes scale it sits at 138–156 bpm. For an older adult training at a genuine hard effort, those are different workouts.
Nes vs. 220 Minus Age: The Gap by Decade
The formulas diverge slowly at first, then meaningfully after 40.
Age
220 Minus Age
Nes (211 − 0.64 × age)
Difference
30
190 bpm
192 bpm
+2 bpm
40
180 bpm
185 bpm
+5 bpm
50
170 bpm
179 bpm
+9 bpm
60
160 bpm
173 bpm
+13 bpm
70
150 bpm
166 bpm
+16 bpm
At 70, 220-minus-age produces an estimate 16 bpm below Nes. Zone 3 on the lower formula overlaps heavily with Zone 2 on Nes. For a 70-year-old who still runs or cycles regularly, those misaligned zones can turn a genuine aerobic base day into something that looks like threshold work on paper.
Zone 1: Recovery (50–60%)
Active recovery, warm-ups, and cool-downs. Minimal cardiovascular stress. Used to flush metabolic waste between hard sessions.
Zone 2: Aerobic Base (60–70%)
Conversational pace. Fat oxidation, mitochondrial development, and aerobic base building. Most training volume should live here. How Zone 2 burns fat →
Zone 3: Aerobic Endurance (70–80%)
Sustained aerobic work at a pace you can hold for 30 or more minutes. Harder than Zone 2, still manageable for long blocks.
Zone 4: Threshold (80–90%)
Lactate threshold training. Improves the pace you can sustain in races and long hard efforts. Limit to 1–2 sessions per week.
Zone 5: Max Effort (90–100%)
All-out sprint intervals. Very short bursts with full recovery between. No more than once per week for most people.
Where the Nes Formula Holds Up, and Where It Doesn't
The strongest case for Nes is direct measurement: 3,320 people had their actual MHR tested and the formula was fit to those results. The main caveat is the same one that applies to every age-based formula: it's a population average, not your personal number.
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Direct measurement
Max heart rate was measured in a lab using graded treadmill tests. The formula is fit to real data, not derived from estimates or meta-analysis of other formulas.
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Shallower age decline
At 0.64 bpm per year, Nes gives the shallowest MHR decline with age of the three major formulas. 220-minus-age's 1.0 bpm coefficient was never formally derived from controlled data.
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Works across fitness levels
The study found no interaction with gender, physical activity, VO2max, or BMI. One formula works for the full range of healthy adults.
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Still carries ±11 bpm spread
Individual variation doesn't disappear with a better formula. The study's standard error of estimate was 10.8 bpm. About one in three people lands more than 11 bpm above or below the estimate.
If you have a directly measured max heart rate from a recent race or genuine all-out effort, use that over any formula. It will always be more accurate. Age-based formulas are estimates, and the best one is still just an estimate.
Women looking for a formula derived specifically from female physiology should use the Gulati formula calculator, which was built from 5,437 women and corrects for the systematic error that male-derived formulas carry for women.
Frequently Asked Questions
Common questions about the Nes formula and how to use it for training.
The Nes formula estimates maximum heart rate as 211 minus 0.64 times your age. For a 40-year-old: 211 − (0.64 × 40) = 185 bpm. It was derived from the HUNT Fitness Study in Norway, where MHR was directly measured in 3,320 healthy adults aged 19 to 89. The coefficient 0.64 is shallower than both 220-minus-age (1.0) and Tanaka (0.7), reflecting that actual measured MHR in healthy adults declines more slowly with age than either of those formulas assumed.
The Nes formula has a standard error of estimate of 10.8 bpm, similar to other age-based formulas. What it improves is the systematic bias: 220-minus-age consistently underestimated directly measured MHR in the HUNT study's healthy adults, especially past age 30. At age 60, Nes estimates MHR 13 bpm higher than 220-minus-age. Training zones built on the lower number compress your ceiling and can make genuine Zone 3 efforts look like Zone 4 on paper. The study found no interaction with fitness level, so the formula applies broadly to healthy adults regardless of activity level.
The 5 zones as percentages of your Nes formula max HR:
Zone 1 (50–60%): active recovery and warm-up
Zone 2 (60–70%): aerobic base and fat burning
Zone 3 (70–80%): aerobic endurance
Zone 4 (80–90%): threshold training
Zone 5 (90–100%): max effort intervals
For a 40-year-old with a Nes MHR of 185 bpm, Zone 2 runs 111–130 bpm. Compare that to the 220-minus-age Zone 2 of 108–126 bpm for the same person.
Using the Nes formula (211 − 0.64 × age):
Age 30: 192 bpm (vs. 190 bpm with 220-minus-age)
Age 40: 185 bpm (vs. 180 bpm)
Age 50: 179 bpm (vs. 170 bpm)
Age 60: 173 bpm (vs. 160 bpm)
Age 70: 166 bpm (vs. 150 bpm)
The gap grows with age. At 70, 220-minus-age puts your ceiling 16 bpm lower than Nes, which shifts every zone down significantly.
Both estimate maximum heart rate from age alone, but use different coefficients. The 220-minus-age formula assumes heart rate declines 1 bpm per year. Nes, derived from directly measured data, found the actual decline is only 0.64 bpm per year. The result: Nes produces estimates 2 bpm higher at age 30, 5 bpm higher at 40, and 13 bpm higher at 60. For adults over 50, zones built on 220-minus-age can push your training ceiling significantly lower than the data supports, making hard days harder to hit and easy days look like threshold work.
Both are peer-reviewed improvements over 220-minus-age. The Tanaka formula (208 − 0.7 × age) came from a meta-analysis of roughly 18,712 subjects spanning multiple studies. Nes (211 − 0.64 × age) came from directly measured MHR in a single cohort of 3,320 healthy adults. Nes produces higher estimates because the directly measured values in that cohort showed a shallower age-related decline. At 50, Nes gives 179 bpm versus Tanaka's 173 bpm. The Nes study found no interaction with fitness level, so neither formula is specifically reserved for athletes or sedentary people.
The Karvonen formula is more accurate than any max-heart-rate-percentage method because it accounts for your resting heart rate. Two people with the same age but different resting heart rates have different fitness levels, but Nes percentage zones treat them identically. The best approach: use Nes to get your estimated max heart rate, then enter that number along with your resting heart rate into the Karvonen calculator to get zones calibrated to your individual cardiovascular fitness.
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Pair Your Nes Max HR With Your Resting Heart Rate
The Karvonen formula uses both your max HR and your resting HR to calculate zones that reflect your actual fitness level, not just your age. Enter your Nes result above into the Karvonen calculator to get your most accurate zones.
