BMI
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Health
BMI Calculator
Estimate adult BMI in metric or imperial units, then compare the result against the standard adult BMI categories and healthy-weight range for your height.
Uses standard adult BMI categories for ages 20+Shows the healthy-weight band for the entered heightDoes not account for body composition or pregnancy
Important: Informational only. This adult BMI calculator is a screening tool for ages 20+ and not a substitute for medical advice.
Results
Current output
Category
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Healthy weight range
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How it works
Assumptions and detail
Pairs the BMI score with adult category thresholds, a healthy-weight range for the entered height, and visible scope limits.
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Supporting content
What to know
Use this page when you want a quick adult BMI screening estimate and a height-based healthy-weight range for general context.
What the BMI category means
The BMI category shows where the result falls within the standard adult weight-status bands. It is a quick screening signal, not a complete health assessment.
Why the page shows a healthy-weight range
The healthy-weight range converts the adult 18.5 to 24.9 BMI band into a weight range for the entered height. That gives users something more practical than a BMI score alone.
What BMI does not capture
BMI does not distinguish muscle from fat and does not directly measure body composition. It should be interpreted with other health information rather than used as a diagnosis by itself.
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Assumptions
Assumptions used
- This calculator is for adults ages 20 and older.
- Healthy-weight guidance uses the adult BMI band of 18.5 to less than 25.
- Imperial mode expects total inches for height.
Limitations
What this page does not cover
- BMI is a screening measure, not a diagnosis.
- BMI does not directly measure body fat or body composition.
- Children and teens need BMI-for-age percentile tools instead of adult BMI categories.
Common mistakes
Mistakes this page helps avoid
- Using adult BMI cutoffs for children or teens.
- Assuming BMI directly measures body fat.
- Entering feet-plus-inches incorrectly instead of total inches in imperial mode.
FAQ
Common questions
Is this BMI calculator for adults or children?
This calculator is for adults ages 20 and older. Children and teens should use BMI-for-age percentile tools instead of adult BMI categories.
Does BMI measure body fat?
No. BMI is a screening measure based on height and weight. It does not directly measure body fat or body composition.
Why does the page show a healthy-weight range?
The healthy-weight range converts the adult BMI band of 18.5 to less than 25 into a weight range for your current height, which is often easier to interpret than a BMI number alone.
How should I enter height in imperial mode?
Enter total inches. For example, 5 feet 10 inches should be entered as 70.
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