BMI calculator
Body mass index with the healthy-weight range for your height.
Changing country switches the currency and resets the inputs to local starting values.
Your numbers
BMI
23.4
Healthy range
- Healthy range at your height
- 128.9 lb – 173.5 lb
- Distance from range
- within range
- Category
- Healthy range
- BMI prime
- 0.94
- ratio to the upper healthy limit
Not medical advice. BMI misreads athletes, older adults and anyone with an unusual frame. Talk to a clinician about your own numbers.
How to read the result
BMI is a crude population statistic that ignores muscle, frame and body composition. It is still what most forms and insurers ask for.
The useful output is not the single number but the weight range that corresponds to it at your height.
This page is set to United States and prints USD. Defaults to pounds and inches. Every figure is a starting point you should overwrite with your own.
Worked example in USD
Using the values the form starts with.
BMI
23.4
- Healthy range at your height
- 128.9 lb – 173.5 lb
- Distance from range
- within range
- Category
- Healthy range
- BMI prime
- 0.94
Questions people ask
- Why does BMI overstate risk for muscular people?
- It only knows height and weight, so dense muscle and stored fat are indistinguishable to the formula.
- Which units does the US use?
- Pounds and inches, which is what this page starts with. Switch to metric at the top of the form if you prefer.
- Is there a better single number?
- Waist-to-height ratio tracks metabolic risk more closely and needs only a tape measure. Under 0.5 is the usual target.
BMI in other countries
Same maths, local currency and local starting values.