Quick tools for school, health, and money decisions.
Use this adult BMI calculator to check a simple screening estimate, see the healthy weight range for your height, and compare Metric or US inputs in one place.
What you will get
Clear input, result, and explanation in one place
The result shows the BMI number, adult category, healthy weight range, and a clearer interpretation meter.
Calculator
Inputs
Live updatesChoose Metric or US units, enter your height and weight, and review the live BMI estimate with healthy-range context.
BMI ranges on this page are intended for adults. Children and teens use age- and sex-based percentile methods.
BMI ranges on this page are for adults. Children and teens use age- and sex-based percentile methods.
Result
The result shows the BMI number, adult category, healthy weight range, and a clearer interpretation meter.
Current estimate
BMI 23.5
healthy range for adults. Within the healthy adult BMI range.
BMI range bar
BMI is a screening tool for adults. Children and teens use different interpretation methods.
23.5
Breakdown
BMI
23.5
Category
healthy range
Healthy BMI range
18.5–24.9
Healthy weight range
56.7 kg (124.9 lb)
Adjustment
You are already in the healthy range
Entered height
175 cm
Entered weight
72.0 kg
Formula mode
Metric formula inputs
More detail
BMI Prime
0.94
BMI divided by 25.
Ponderal Index
13.4
Weight in kg divided by height in metres cubed.
Supporting details
Next step
BMI is a useful screen. If you want a more measurement-based view, try the Body Fat Calculator next.
Result meaning
The BMI number is a quick adult screening estimate. It helps you see whether your weight sits below, inside, or above a broad healthy range for your height, but it does not tell the full health story on its own.
Adult ranges
Adult BMI ranges are usually grouped into underweight, healthy range, overweight, and a higher range often referred to as obesity. The calculator highlights your current point on that scale so the category is easy to read at a glance.
Height-based view
The healthy weight range changes with height. Showing the range beside the BMI score makes the result more practical, because you can immediately see the span that matches the adult healthy range for your body size.
Use with care
BMI does not measure body fat directly, and it cannot see muscle mass, waist distribution, or health history. That is why a strong BMI page should stay calm, clear, and practical rather than making the number sound more precise than it really is.
Use other measures when needed
BMI is most useful as a first-pass screen. If you want a more detailed view, body-fat estimates, waist measures, and energy tools like TDEE often give better context for everyday planning.
Special cases
Very muscular people, older adults, children, teens, and people who are pregnant should be careful about reading too much into BMI by itself. In those situations, a different measure or a broader health review is usually more useful.
Common questions
For adults, the usual healthy range is 18.5 to 24.9. The calculator also shows the healthy weight range for your height.
BMI is useful as a screening tool, but it does not measure body fat directly and can miss important context.
No. It is a quick estimate for adults, not a diagnosis or a full health assessment.
The calculator shows a healthy weight range for the height you entered, which is usually more useful than chasing one exact number.
BMI does not separate muscle from fat, so muscular people can fall into a higher category even when body composition is healthy.
No. Children and teens are usually assessed with age- and sex-based percentile methods instead of adult BMI ranges.
BMI Prime compares your BMI with the upper end of the healthy adult range. A value near 1.0 is close to the healthy upper limit.
Helpful guide
A simple guide to choosing between BMI, body-fat estimates, sleep timing, and training zone tools.
Read guideRelated tools
Health
Estimate body fat percentage from height and body measurements using a transparent circumference-based formula.
OpenHealth
Estimate a healthy weight range from your height using a standard BMI reference range.
OpenHealth
Estimate total daily energy expenditure from your age, weight, height, sex, and activity level.
Open