A healthy resting heart rate for an adult woman falls between 60 and 100 beats per minute (bpm), with the average landing around 79 bpm. That average is slightly higher than for men, which is normal and reflects differences in heart size and physiology. Where you fall within that range depends on your age, fitness level, whether you’re pregnant, and even where you are in your menstrual cycle.
Why Women’s Heart Rates Run Slightly Higher
Women typically have a faster resting heart rate than men. The main reason is heart size: a smaller heart holds less blood per beat, so it needs to beat more frequently to pump the same volume. Since women on average have smaller hearts than men, the pump works a little harder at baseline. This is completely normal and doesn’t signal any health concern.
What “Resting” Actually Means
Your resting heart rate is measured while you’re sitting or lying down, awake, and calm. The best time to check it is first thing in the morning before you get out of bed. If you’ve just climbed stairs, had coffee, or felt stressed, your reading will be artificially high. For the most accurate picture, measure it several mornings in a row and look at the trend rather than any single number.
A rate between 60 and 100 bpm is considered normal for all adults from age 18 onward. Children and teens have different ranges: toddlers can be as high as 140 bpm, and school-age kids typically fall between 75 and 118 bpm. By adolescence, the adult range of 60 to 100 applies.
How Fitness Changes the Picture
If you exercise regularly, your resting heart rate will often drop below 60 bpm, and that’s a sign of cardiovascular efficiency rather than a problem. Endurance athletes can have resting rates in the 40s or low 50s because their hearts pump more blood per beat, so fewer beats are needed each minute. If your rate is in the low 60s or high 50s and you’re active, you’re likely in good cardiovascular shape.
A resting heart rate that gradually decreases over weeks or months of consistent exercise is one of the clearest signals that your fitness is improving. It’s more reliable than how a workout “feels” because it reflects a measurable change in how efficiently your heart is working.
Heart Rate During Pregnancy
Pregnancy raises your resting heart rate significantly. Your body increases blood volume by roughly 50% to support the growing baby, and your heart speeds up to move all that extra blood. The increase starts early in the first trimester and peaks in the third trimester.
Research from the Harvard Apple Women’s Health Study found that the median resting heart rate before pregnancy was about 65.5 bpm, climbing to a peak of around 77 bpm in the third trimester, roughly 8 weeks before delivery. That’s an increase of 10 to 20 bpm, or about 20% to 25% above your pre-pregnancy baseline. Walking heart rate follows a similar pattern, rising from about 101.5 bpm before pregnancy to around 109.5 bpm in the third trimester. If you notice your resting rate creeping up in early pregnancy, this is expected.
Your Target Heart Rate During Exercise
When you’re working out, your heart rate should be well above your resting number. The general target for aerobic exercise is 60% to 85% of your maximum heart rate. You can estimate your max with a simple formula: 220 minus your age. So a 40-year-old woman would have an estimated max of 180 bpm and a target exercise range of 108 to 153 bpm.
However, that 220-minus-age formula was developed mostly from data on men. A study published in the American Heart Association’s journal Circulation found that for women, a more accurate formula is 206 minus (0.88 times your age). For that same 40-year-old woman, this gives a max of about 171 bpm instead of 180. The difference matters because using the standard formula can push women to aim for heart rates that are unrealistically high, leading to unnecessary frustration or overexertion.
Here’s what the women-specific formula looks like at different ages:
- Age 30: Max of about 180 bpm, target range of 108 to 153
- Age 40: Max of about 171 bpm, target range of 103 to 145
- Age 50: Max of about 162 bpm, target range of 97 to 138
- Age 60: Max of about 153 bpm, target range of 92 to 130
As a practical guide: moderate-intensity exercise puts you at about 70% to 80% of your max, where breathing gets heavier and holding a conversation becomes difficult. Vigorous intensity, at 90% or above, means labored breathing and an inability to talk.
When Your Heart Rate Signals a Problem
A resting heart rate consistently above 100 bpm is called tachycardia. It can be caused by stress, caffeine, dehydration, anemia, thyroid problems, or heart-related conditions. A rate consistently below 60 bpm without regular exercise (called bradycardia) can sometimes indicate an issue with the heart’s electrical system, though it’s often harmless.
The number alone isn’t always the concern. Pay attention to how you feel alongside it. A heart that feels like it’s racing, skipping beats, or fluttering warrants a checkup. If a fast or slow heart rate comes with chest pain, shortness of breath, or fainting, that’s an emergency. A sudden, severe drop in blood pressure from certain rhythm disturbances can cause collapse within seconds, so call 911 if someone loses consciousness with no pulse.
Tracking Your Heart Rate Over Time
A single heart rate reading is a snapshot. The real value comes from tracking your resting rate over weeks and months. A gradual downward trend usually means improving fitness. A sudden or sustained increase, when nothing else has changed, can be an early sign of illness, overtraining, stress, or hormonal shifts.
Wearable devices make this easy, but you can also check manually. Place two fingers on the inside of your wrist, just below the thumb, and count the beats for 15 seconds. Multiply by four. Do it at the same time each morning for the most consistent comparison.