A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). That range covers most healthy people while sitting or lying down, but your ideal number within it depends on your age, sex, fitness level, and what you’re doing at the time.
Normal Resting Heart Rate by Age
Heart rate norms shift significantly from infancy through adulthood. Babies and young children have much faster hearts because their smaller bodies need rapid circulation to meet their metabolic demands. Here’s what’s considered normal at rest:
- Infants (1 to 12 months): 80 to 140 bpm
- Toddlers (1 to 3 years): 80 to 130 bpm
- School-age children (6 to 12 years): 70 to 100 bpm
- Adults (18 and older): 60 to 100 bpm
If your child’s resting heart rate seems high by adult standards, that’s likely perfectly normal. Children’s rates gradually slow as they grow, settling into the adult range by the mid-teen years.
Why Women Typically Have Faster Pulses
The average adult male heart rate sits around 70 to 72 bpm, while the average for women is 78 to 82 bpm. That gap comes down to heart size. A smaller heart pumps less blood per beat, so it compensates by beating more frequently to deliver the same total output. Women also have a slightly different intrinsic rhythm in the heart’s natural pacemaker cells, which contributes to the faster rate. Neither number is better or worse. Both fall well within the healthy range.
When a Low Heart Rate Is Normal
Endurance athletes routinely have resting heart rates in the 40s or even 30s, and this is almost always harmless. A study of 465 endurance athletes found that 38% had resting heart rates at or below 40 bpm. Among the small number (about 2%) whose hearts dipped to 30 bpm or lower, none experienced fainting, required a pacemaker, or had any adverse outcomes during follow-up.
Regular aerobic exercise makes your heart more efficient. Each beat pumps a larger volume of blood, so the heart doesn’t need to beat as often. If you’re physically active and your resting rate sits in the 40s or 50s with no dizziness, fatigue, or fainting, that’s generally a sign of cardiovascular fitness rather than a problem.
What Counts as Too Fast or Too Slow
A resting heart rate consistently above 100 bpm is called tachycardia. It can be triggered by stress, fever, dehydration, caffeine, or an underlying heart rhythm disorder. A resting rate below 60 bpm is called bradycardia, though as noted above, this is common and benign in fit individuals. The concern with either one is when it comes with symptoms: lightheadedness, shortness of breath, chest pain, or fainting spells. The number alone doesn’t tell the whole story. A rate of 105 during a stressful workday is different from a persistent 105 while relaxed on the couch.
What Affects Your Heart Rate Day to Day
Your resting heart rate isn’t a fixed number. It fluctuates throughout the day based on several factors. Caffeine increases heart rate by stimulating the nervous system and boosting cardiac activity. Even moderate amounts from coffee or energy drinks can push your rate up temporarily. Alcohol, poor sleep, and dehydration all have similar effects. Hot weather raises your heart rate because your body works harder to cool itself, routing more blood to the skin’s surface. Stress and anxiety trigger your fight-or-flight response, which speeds things up even when you’re sitting still.
For the most accurate reading, check your pulse first thing in the morning before getting out of bed, before caffeine, and after a calm night’s sleep. That baseline number is your true resting heart rate.
Your Heart Rate During Exercise
During physical activity, your heart rate should climb well above your resting rate. How high depends on the intensity and your age. The simplest way to estimate your maximum heart rate is with the formula 220 minus your age. For a 40-year-old, that’s roughly 180 bpm. For a 60-year-old, about 160 bpm.
This formula, developed in 1971, remains the most widely used estimate. Research has shown that all age-based formulas have wide margins of error for any given individual, sometimes off by 10 to 15 bpm in either direction. But among the various formulas available, the 220-minus-age calculation is the least likely to systematically overestimate or underestimate across a diverse population. It’s a reasonable starting point, not a precise ceiling.
Moderate-intensity exercise, like brisk walking or an easy bike ride, typically puts you at about 50% to 70% of your estimated max. Vigorous exercise, like running or high-intensity interval training, pushes you to 70% to 85%. For that same 40-year-old with an estimated max of 180, moderate effort would feel like 90 to 126 bpm, and vigorous effort would land around 126 to 153 bpm.
How to Check Your Heart Rate Accurately
Place your index and middle fingers on the inside of your opposite wrist, just below the base of your thumb. Press gently until you feel a pulse. Count the beats for 30 seconds and multiply by two, or count for a full 60 seconds for a more precise number. Avoid using your thumb, which has its own pulse that can interfere with the count.
Wrist-worn fitness trackers are convenient but vary in accuracy. A study comparing consumer devices against medical-grade ECG found that at rest, all tested wearables performed reasonably well. The Apple Watch had the highest agreement among wrist-worn devices, closely matching ECG readings. Fitbit performed similarly after statistical adjustment. Some devices, like the TomTom Spark 3, overestimated heart rate by about 6 bpm on average. The bigger issue is during exercise: as workout intensity increased, accuracy of all wrist-worn devices dropped noticeably. At high running speeds, none of the optical wrist sensors maintained strong agreement with ECG. Chest strap monitors performed significantly better across all intensities, with the Polar H7 showing 98% agreement with ECG.
If you’re using a wrist tracker for general daily monitoring, the numbers are reliable enough to spot trends over time. If you need precise readings during hard workouts, a chest strap is the better tool.
What a “Good” Resting Heart Rate Looks Like
Within the 60 to 100 range, lower generally correlates with better cardiovascular fitness, though the relationship isn’t perfectly linear. A resting rate in the low 60s or high 50s in someone who exercises regularly suggests an efficient heart. A rate that’s been gradually climbing over months or years without a clear reason (new medication, weight gain, increased stress) is worth paying attention to, even if it’s still technically in the normal range. The trend matters as much as the number itself. Tracking your resting heart rate over weeks and months gives you a personal baseline that’s more useful than any single reading.