Gulati Formula Max Heart Rate Calculator for Women
220-minus-age was built from men's data. The Gulati formula comes from 5,437 women and corrects what that means for your training zones.
Enter your age to get your Gulati MHR and all 5 training zones instantly.
Gulati Max HR
--bpm
Zone 2 Range
--bpm
★ Sweet Spot
Your training zones
What Is the Gulati Formula?
The Gulati formula is a method for estimating maximum heart rate (MHR) in women, developed from the St. James Women Take Heart Project and published in Circulation in 2010. Martha Gulati and colleagues measured actual peak heart rate in 5,437 asymptomatic women during exercise stress testing, giving the formula a female-specific empirical foundation that 220-minus-age lacks.
Max Heart Rate = 206 − (0.88 × Age)
The study found that women's maximum heart rate declines at 0.88 beats per minute per year of age. More importantly, the starting intercept is lower than what 220-minus-age predicts, because 220-minus-age was built from predominantly male data. That combination means 220-minus-age consistently overestimates max heart rate for women at every age.
How Much Does 220 Minus Age Overestimate for Women?
The gap is largest in your 30s and narrows slightly with age, but it never disappears.
Age
Gulati (206 − 0.88 × age)
220 Minus Age
Overestimate
30
180 bpm
190 bpm
+10 bpm
40
171 bpm
180 bpm
+9 bpm
50
162 bpm
170 bpm
+8 bpm
60
153 bpm
160 bpm
+7 bpm
70
144 bpm
150 bpm
+6 bpm
A 10 bpm error in max heart rate at age 30 shifts every zone above its correct range. Zone 2, which should sit at 60–70% of actual MHR, ends up running roughly 6 bpm too high. For women following heart rate zones on a watch or app, this can make Zone 2 feel harder than it should, or create the impression that the targets are wrong when the formula is the actual problem.
Zone 1: Recovery (50–60%)
Active recovery, warm-ups, and cool-downs. Very light effort. Clears metabolic waste without adding training stress.
Zone 2: Aerobic Base (60–70%)
Fat burning, mitochondrial development, and aerobic base building. The conversational pace. This is where the majority of your training volume should live. How Zone 2 burns fat →
Zone 3: Aerobic Endurance (70–80%)
Sustained aerobic work that improves cardiovascular output and stamina. Moderate effort that still feels manageable for 30+ minutes.
Zone 4: Threshold (80–90%)
Lactate threshold training. Hard but sustainable. Improves the pace you can hold for a race or long hard effort. Limit this to 1–2 sessions per week.
Zone 5: Max Effort (90–100%)
All-out sprint intervals. Short, intense, and demanding on recovery. Use sparingly, no more than once a week for most people.
Why Women Need the Gulati Formula
The formula you use to estimate max heart rate determines whether your training zones are calibrated correctly. Using a male-derived formula for female physiology introduces a systematic error that compounds across every intensity level.
👥
Built from women's data
Derived from 5,437 women in the St. James Women Take Heart Project, not a male-dominated study adjusted after the fact. The formula measures what actually happens to women's heart rate as they age.
🎯
Corrects a 10 bpm overestimate
220-minus-age sets a 30-year-old woman's max HR at 190 bpm. Gulati gives 180. Training on zones built from 190 means you're working harder than you realize, especially in Zone 2.
📋
Clinically validated
Published in Circulation, the American Heart Association's flagship journal. The study measured actual peak heart rate during supervised exercise stress testing, not just resting estimates.
✅
Age is the only input
Like 220-minus-age, you only need your age. You get a more accurate, women-specific estimate with zero additional effort.
Both formulas carry individual variation of roughly ±7–12 bpm. No age-based formula eliminates that. If you have a directly measured peak heart rate from a recent race or all-out effort, use that instead of any formula. For a gender-neutral comparison, the Tanaka formula is the most accurate age-based option for mixed-sex populations.
Frequently Asked Questions
Common questions about the Gulati formula and how to use it for women's training.
The Gulati formula estimates maximum heart rate for women as 206 minus 0.88 times age. For a 40-year-old woman: 206 − (0.88 × 40) = 171 bpm. Developed by Martha Gulati and colleagues from the St. James Women Take Heart Project and published in Circulation in 2010, it was derived from 5,437 asymptomatic women and provides a more accurate MHR estimate for women than the standard 220-minus-age formula.
The 220-minus-age formula was derived primarily from male subjects in studies from the 1970s and was never formally validated for women. Women have a different max heart rate trajectory than the male-derived formula predicts. At age 30, 220-minus-age gives a woman 190 bpm; the Gulati formula gives 180 bpm. That 10 bpm overestimate pushes every training zone above its correct range, making workouts harder than intended.
Using Gulati vs. 220-minus-age for women:
Age 30: Gulati 180 bpm vs. 190 bpm (10 bpm too high)
Age 40: Gulati 171 bpm vs. 180 bpm (9 bpm too high)
Age 50: Gulati 162 bpm vs. 170 bpm (8 bpm too high)
Age 60: Gulati 153 bpm vs. 160 bpm (7 bpm too high)
Age 70: Gulati 144 bpm vs. 150 bpm (6 bpm too high)
220-minus-age consistently overestimates MHR for women at every age. The gap is largest in your 30s and narrows slightly with age, but it never closes.
The 5 zones as percentages of Gulati max heart rate are: Zone 1 (50–60%) recovery and warm-up; Zone 2 (60–70%) aerobic base building and fat burning; Zone 3 (70–80%) aerobic endurance; Zone 4 (80–90%) lactate threshold training; Zone 5 (90–100%) max effort intervals. For a 40-year-old woman with a Gulati MHR of 171 bpm, Zone 2 is roughly 103 to 120 bpm. Most of your training volume should stay in Zone 2.
Martha Gulati and colleagues published the formula in Circulation, the American Heart Association's flagship journal, in 2010. The research came from the St. James Women Take Heart Project, which tracked 5,437 asymptomatic women and measured their actual peak heart rate during exercise stress testing. The study found that women's maximum heart rate follows a different age-related trajectory than the male-dominated research behind 220-minus-age implies, with a lower intercept and a less steep decline.
For serious training, the Karvonen method is more accurate than any age-based formula because it also accounts for your resting heart rate. Two women of the same age with resting heart rates of 50 and 75 bpm have meaningfully different cardiovascular fitness levels, but raw MHR percentage zones treat them identically. That said, if you prefer a simple age-based estimate, the Gulati formula is the best available option for women. You can also combine both: use Gulati's MHR estimate inside the Karvonen calculation for the most accurate result without a lab test.
Using the Gulati formula (206 minus 0.88 times age):
Age 30: 180 bpm
Age 40: 171 bpm
Age 50: 162 bpm
Age 60: 153 bpm
Age 70: 144 bpm
Compare to 220-minus-age estimates of 190, 180, 170, 160, and 150 bpm respectively. The Gulati formula gives lower estimates at every age, which more accurately reflect how women's max heart rate actually changes over time.
❤️
Want a Gender-Neutral Formula?
The Tanaka formula uses a mixed-sex population of 18,712 subjects. It's the most accurate age-based option if you train alongside men or use apps that offer only a single formula.