Children from ages 1 to 10 have heart rates than range from 60 to 140, and average from 85 to 90. Children who are 11 to 17 have heart rates that range from 60 to 100 bpm.
Blood pressure, body temperature, pulse rate, and respiratory rate are the routine vital signs measured in medicine. As infants and children grow and age, their normal values for vital signs change. Body temperature does not change with age, and normal body temperature is considered 98.6 F (37 C). Two tables of normal vital signs for the pediatric population are presented below. Heart rates may be slightly slower when asleep.  The normal resting adult human heart rate ranges from 60–100 bpm. Tachycardia is a fast heart rate, defined as above 100 bpm at rest. Bradycardia is a slow heart rate, defined as below 60 bpm at rest. During sleep a slow heartbeat with rates around 40–50 BPM is common and is considered normal. Bradycardia was defined as a heart rate less than 60 beats per minute when textbooks asserted that the normal range for heart rates was 60–100 BPM. The normal range has since been revised in textbooks to 50–90 BPM for a human at total rest. A normal resting heart rate for adults ranges from 60 to 100 beats a minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats a minute.  A. A healthy resting heart rate is between 60 and 100 beats per minute for adults. But the upper end of that range may mean a greater chance of serious health problems.  Myth: A normal heart rate is 60-100 beats per minute. That's the old standard. Many doctors think it should be lower. About 50-70 beats per minute is ideal, says Suzanne Steinbaum, MD, director of women's heart health at Lenox Hill Hospital.  Heart at Rest. A child’s resting heart rate level depends, in large part, upon her age. For infants, a resting heart rate is expected to be between 100 and 160 beats per minute. In children who are 1 to 10 years old, this resting heart rate should be between 70 and 120 beats per minute. Adolescents and young adults between the ages of 10 and 18 should have a resting heart rate between 60 and 100 beats per minute. To determine your child’s maximum exercise heart rate, you must again consider her age. A child’s maximum exercise heart rate can be calculated by subtracting his age from 220. For example, a 10-year-old’s maximum exercise heart rate should be 210, while the maximum exercise heart rate for a 16-year-old should be 204. Normal and Abnormal Heart Rates. About Heart Rhythms The heart rate is the number of times the heart beats each minute. In an older child or teenager who's resting, the heart beats about 70 times a minute. In a newborn it beats about 140 times a minute. Usually the heart rhythm is regular How to measure your pulse and heart rate. Your pulse is your heart rate, or the number of times your heart beats in one minute. 2 Pulse rates vary from person to person. Your pulse is lower when you are at rest and increases when you exercise (more oxygen-rich blood is needed by the body when you exercise).  Heart rate tends to decrease across childhood up to adolescence. Age norms for resting heart rate are available at We Be Fit. There is significant variability in children’s heart rates even within age groups. Newborns have heart rates that range from 100 to 160 beats per minute (bpm). Children from ages 1 to 10 have heart rates than range from 60 to 140, and average from 85 to 90. Children who are 11 to 17 have heart rates that range from 60 to 100 bpm. Just as with adults, female children tend to have slightly higher resting higher heart rates than males. 
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normal heart rate of child