The average resting heart rate for adult women falls between 74 and 78 beats per minute (bpm), though the normal range extends from 60 to 100 bpm. Women’s hearts tend to beat slightly faster than men’s, and that difference is rooted in biology, not fitness.
Normal Resting Heart Rate for Women by Age
A “normal” resting heart rate covers a wide span of 60 to 100 bpm, but where you fall within that range says a lot about your cardiovascular fitness. The table below breaks down resting heart rate ranges for women across age groups and fitness levels.
- Ages 18–25: Average is 74–78 bpm. Good fitness is 66–69 bpm. Excellent is 61–65 bpm.
- Ages 26–35: Average is 73–76 bpm. Good fitness is 65–68 bpm. Excellent is 60–64 bpm.
- Ages 36–45: Average is 74–78 bpm. Good fitness is 65–69 bpm. Excellent is 60–64 bpm.
- Ages 46–55: Average is 74–77 bpm. Good fitness is 66–69 bpm. Excellent is 61–65 bpm.
- Ages 56–65: Average is 74–77 bpm. Good fitness is 65–68 bpm. Excellent is 60–64 bpm.
- Ages 65+: Average is 73–76 bpm. Good fitness is 65–68 bpm. Excellent is 60–64 bpm.
Highly trained female athletes often have resting heart rates between 40 and 55 bpm, depending on age. A rate above 83–85 bpm at rest is considered poor for women in any age group, and a sustained resting rate over 100 bpm meets the clinical definition of tachycardia, which may warrant medical evaluation. On the other end, a resting rate below 60 bpm is called bradycardia, though it’s perfectly normal in fit individuals.
Why Women’s Hearts Beat Faster Than Men’s
Women’s resting heart rates run a few beats per minute higher than men’s on average, and for a long time the explanation stopped at heart size: women’s hearts are generally smaller, pump less blood per beat, and compensate by beating more often. That’s part of the story, but recent research has uncovered a deeper, more precise explanation.
A 2024 study published in Circulation: Arrhythmia and Electrophysiology found that the difference is genetic and hormonal. The heart’s natural pacemaker, a small cluster of cells that sets the rhythm, expresses certain genes differently in women. Specifically, two genes involved in generating the electrical impulse that triggers each heartbeat are more active in female heart tissue. The result is a faster baseline firing rate.
Estrogen plays a central role. Higher estrogen levels appear to upregulate multiple genes that control the pacemaker’s electrical currents, essentially turning up the speed dial on the heart’s rhythm. This is one reason heart rate can fluctuate across the menstrual cycle and shift noticeably during pregnancy and menopause. It also helps explain why women are more susceptible to certain rhythm disorders, like inappropriate sinus tachycardia, where the heart races without an obvious trigger.
How Fitness Changes Your Resting Rate
Cardiovascular exercise is the single most effective way to lower your resting heart rate. When you train consistently, your heart muscle grows stronger and pushes more blood with each beat. Because each contraction is more efficient, the heart doesn’t need to beat as often to circulate the same volume of blood. That’s why athletes can function normally at 40 bpm while a sedentary person might sit at 85 bpm.
The difference between fitness categories is meaningful. A woman in the “below average” range (around 79–84 bpm) who starts regular aerobic exercise can realistically move into the “good” range (65–69 bpm) over several months. Even modest improvements in resting heart rate are linked to better cardiovascular health outcomes. If your resting rate has been creeping upward over time without a clear reason like stress, illness, or medication changes, that trend is worth paying attention to.
Heart Rate During Pregnancy
Pregnancy increases resting heart rate significantly, and the change starts early. The body begins producing more blood within the first few weeks to support the placenta and growing fetus, and the heart speeds up to keep pace with the increased demand.
Data from the Apple Women’s Health Study, conducted at Harvard, tracked resting heart rates throughout pregnancy using wearable devices. The median pre-pregnancy resting heart rate was about 65.5 bpm. That number climbed steadily through each trimester, peaking around 77 bpm in the third trimester, roughly eight weeks before delivery. That’s an increase of 10 to 20 bpm, or about 20% to 25% above baseline. The increase varies from person to person, but a resting heart rate in the high 70s or low 80s during late pregnancy is typical and expected.
After delivery, resting heart rate gradually returns to pre-pregnancy levels, though the timeline varies. If you’re tracking your heart rate with a smartwatch during pregnancy, the upward trend is normal and not a reason for concern on its own.
Maximum Heart Rate: The Formula Matters
If you use heart rate zones for exercise, the formula you use to calculate your maximum heart rate matters. The classic formula, 220 minus your age, was developed from studies of men and has been the default for nearly four decades. It overestimates maximum heart rate in women, which can push you into zones that are harder to sustain and make workouts feel unnecessarily grueling.
A formula developed specifically for women uses a different calculation: 206 minus 88% of your age. The difference is modest in younger women but grows with age. At 50, the old formula predicts a max of 170 bpm, while the women’s formula gives 162 bpm. That 8-beat gap changes your target heart rate zones for moderate and vigorous exercise by a meaningful margin. If you’ve ever felt like the “moderate intensity” zone on a heart rate monitor felt too hard, this mismatch could be why.
How to Measure Your Resting Heart Rate Accurately
The most reliable time to check your resting heart rate is first thing in the morning, before you get out of bed, drink coffee, or check your phone. Place two fingers on the inside of your wrist just below the thumb, count the beats for 30 seconds, and multiply by two. Do this on three or four mornings and take the average.
Wearable devices like smartwatches and fitness trackers measure resting heart rate continuously throughout the day and generally provide a good estimate, though they’re most accurate during sleep or quiet rest. What matters more than any single reading is the trend over weeks and months. A gradually rising resting heart rate can signal overtraining, chronic stress, poor sleep, dehydration, or the early stages of illness. A gradually declining resting heart rate usually reflects improving cardiovascular fitness.