The average resting heart rate for a 14-year-old is about 77 to 80 beats per minute (bpm), with a normal range of 60 to 100 bpm while awake. Where your teen falls within that range depends on their fitness level, sex, and what they’re doing at the time.
Normal Resting Heart Rate at Age 14
A resting heart rate is measured when someone is calm, sitting or lying down, and hasn’t been exercising. For adolescents aged 13 to 17, the accepted normal range is 60 to 100 bpm. Some clinical guidelines place the upper boundary slightly higher, around 104 bpm, which still falls within a healthy window.
CDC data from a large national survey gives us more precise averages for the 12-to-15 age group. Boys average about 77 bpm at rest, while girls average about 80 bpm. That three-beat difference is consistent across all childhood and adolescent age groups: females tend to have a slightly faster resting pulse than males. Both numbers sit comfortably in the middle of the normal range, so a reading anywhere in the 70s or low 80s is very typical for a 14-year-old.
What Counts as Too High or Too Low
A resting heart rate consistently above 100 bpm in a teenager is considered tachycardia, or an abnormally fast heart rate. It can be triggered by dehydration, caffeine, anxiety, fever, or an underlying heart rhythm issue. A single high reading after running up the stairs or feeling nervous doesn’t mean much, but a pattern of elevated readings at rest is worth paying attention to.
On the other end, a resting rate below 60 bpm is technically bradycardia. In teens who are very active or athletic, though, a rate in the 50s is common and perfectly healthy. Regular cardio training makes the heart more efficient, so it pumps more blood per beat and doesn’t need to beat as often. A low rate only becomes a concern if it comes with dizziness, fainting, or unusual fatigue.
Heart Rate During Sleep
It’s normal for a 14-year-old’s heart rate to drop during sleep. The typical sleeping range for anyone over 10 is about 50 to 90 bpm. The lowest point usually occurs during deep sleep stages in the middle of the night, then gradually rises as morning approaches. If your teen wears a fitness tracker or smartwatch, overnight readings in the 50s or 60s are nothing to worry about.
Heart Rate During Exercise
When a 14-year-old is physically active, their heart rate should climb well above resting levels. The standard formula for estimating maximum heart rate is 220 minus age, which puts a 14-year-old’s estimated max at about 206 bpm.
The American Heart Association breaks exercise intensity into two zones based on that maximum:
- Moderate intensity (brisk walking, casual biking, recreational swimming): 50 to 70% of max, or roughly 103 to 144 bpm for a 14-year-old.
- Vigorous intensity (running, competitive sports, intense cycling): 70 to 85% of max, or roughly 144 to 175 bpm.
These are general guides, not strict cutoffs. A heart rate that briefly spikes above 175 during an all-out sprint at soccer practice is completely normal. The number should come back down within a few minutes of stopping the activity. If it takes a long time to recover, or if your teen feels chest pain, extreme shortness of breath, or lightheadedness during exercise, that warrants a closer look.
What Affects a Teen’s Heart Rate
Fitness level is the single biggest factor. A 14-year-old who runs cross-country will generally have a lower resting heart rate than a classmate who is mostly sedentary, because their heart has adapted to push out more blood with each beat. Even a few weeks of regular cardio can start to bring the resting rate down.
Beyond fitness, several everyday factors can shift the number up temporarily. Caffeine from energy drinks, coffee, or soda speeds the heart. So does stress, whether it’s test anxiety or social pressure. Dehydration is another common one, especially in teens who are active but don’t drink enough water. Illness and fever reliably raise heart rate too, often by about 10 bpm for every degree of temperature increase.
Hormonal changes during puberty can also cause occasional heart rate fluctuations. Growth spurts demand more from the cardiovascular system, and shifts in hormone levels can make the heart rate feel less predictable for a while. This is a normal part of adolescence.
How to Check a Teen’s Heart Rate
The simplest method is placing two fingers (index and middle, not the thumb) on the inside of the wrist, just below the base of the thumb. Count the beats for 30 seconds and multiply by two. For the most accurate resting measurement, do it first thing in the morning before getting out of bed, or after sitting quietly for at least five minutes.
Wearable devices like fitness trackers and smartwatches offer continuous monitoring, but they can be off by a few beats in either direction. They’re useful for spotting trends over time rather than relying on any single reading. If a device consistently shows numbers outside the 60 to 100 range at rest, a manual check can confirm whether the reading is accurate.