BMI Calculator
Calculate BMI, category, and a healthy-weight range from height and weight.
Inputs
Results update as you edit.
BMI
24.4
Results update as the calculator inputs change.
This calculator is informational and is not medical advice.
Category
Healthy weight
Healthy weight range
129-174 lb
Height in inches
70
How to Calculate BMI
How to Interpret BMI
BMI is a screening measure, not a diagnosis. It can be useful for population-level and first-pass weight categories, but it does not directly measure body fat, muscle, or health status.
What Affects BMI Interpretation?
Related Weight Measures
BMI Category
Compare the BMI result with common adult category ranges.
Healthy Range
Estimate the weight range that maps to healthy adult BMI for the entered height.
Waist and Fitness
Use waist circumference and fitness measures for added context.
Frequently Asked Questions
What does BMI measure?
BMI estimates weight relative to height. It does not directly measure body fat or diagnose health.
What BMI range is considered healthy for adults?
Common adult categories place healthy weight from BMI 18.5 to less than 25.
Can athletes have a high BMI?
Yes. More muscle mass can increase BMI even when body fat is not high.
Is BMI used for children?
Children and teens use age- and sex-specific BMI percentiles, not the adult categories shown here.
Should I make health decisions from BMI alone?
No. Use BMI as a screening tool and consider clinical advice, waist measurements, labs, and overall health.