Resting heart rate
Is my resting heart rate normal for my age?
Check your heart rate, healthy weight and child's growth
Free calculators based on ranges from the CDC, NIH, WHO and the American Heart Association.
Quick checks
Exercise heart rate zones
What heart rate should I aim for when I work out?
Healthy adult weight
Is my weight healthy for my height?
Child growth
How does my child's growth compare with other children the same age?
All calculators
Pick a calculator to get a quick answer, a chart and the full table of typical values.
Resting heart rate check
See if your resting heart rate is normal for your age.Resting heart rate by age
See the typical resting heart rate at any age, from babies to adults.Exercise zones by age
Find your target heart rate for moderate and vigorous exercise.Exercise heart rate check
See which exercise zone your heart rate is in during a workout.Healthy height for a weight
See the heights where your weight is in the healthy range.Healthy weight for a height
See the healthy weight range for your height.Child weight by age
How your child's weight compares with other children, from birth to 20.Child height by age
How your child's length or height compares with other children, from birth to 20.How Healthly works
Trusted public health data
Our ranges come from the CDC, NIH, WHO and the American Heart Association, and every calculator lists its sources.
Your answer first
Each page starts with a clear answer. Charts and tables come after it.
Not medical advice
These ranges describe large groups of people. Your doctor can tell you what your numbers mean for you.