Digital Body Weight Scale
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NIH BMI Calculator in Metric Units
Enter your height in centimeters and weight in kilograms to calculate your BMI, compare adult BMI categories, and understand what your result may mean.
Calculate Metric BMI
Metric-first
Uses kilograms and centimeters by default.
Simple BMI result
Get your BMI number instantly.
Category guide
Compare your result with adult BMI ranges.
1
Step 1
Enter height in cm
2
Step 2
Enter weight in kg
3
Step 3
Review your BMI category
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Your Metric Details
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Your BMI Result
BMI
26.0
Overweight Range
Your BMI estimate is above the general healthy adult range. BMI is a screening tool and does not directly measure body fat, muscle, bone density, or overall health.
Metric formula used
BMI = kg ÷ cm ÷ cm × 10,000
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Tip: BMI is best used as a quick screening number. Waist size, strength, activity level, medical history, and professional guidance can add important context.
Metric BMI Chart
This metric BMI calculator uses height in centimeters and weight in kilograms. Adult BMI categories are commonly used for adults age 20 and older, but BMI should be treated as a screening measure rather than a diagnosis.
| BMI Range | Adult Category | What it may suggest | Helpful context |
|---|---|---|---|
| Below 18.5 | Underweight | Your weight may be below the general healthy adult range. | Unplanned weight loss or low appetite may need review. |
| 18.5 – 24.9 | Healthy Weight | Your BMI falls within the general healthy adult range. | Still consider waist size, strength, activity level, and overall health. |
| 25.0 – 29.9 | Overweight | Your BMI is above the general healthy adult range. | Body composition and waist size can change how the number should be interpreted. |
| 30.0 and above | Obesity | Your BMI is in a higher adult BMI range. | Consider reviewing your full health picture with a qualified healthcare professional. |
Based on standard adult BMI categories and the metric BMI formula. This page is for general wellness education only.
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How to Use This NIH-Style Metric BMI Calculator
Enter your height in centimeters and weight in kilograms. The calculator will estimate your BMI and compare it with general adult BMI categories.
This page is designed for visitors searching for an NIH-style metric BMI calculator, but it is not an official NIH page or official NIH tool.
Why BMI Needs Context
BMI is a quick screening number based on height and weight. It does not directly measure body fat, muscle, waist size, bone density, fitness level, or medical risk.
Use the result as a starting point. For personal health decisions, review your number with a qualified healthcare professional.
FAQs About NIH BMI Calculator Metric Units
What is the metric BMI formula?
The metric BMI formula is weight in kilograms divided by height in centimeters divided by height in centimeters, then multiplied by 10,000.
Is this an official NIH BMI calculator?
No. This is an independent educational calculator designed for people searching for an NIH-style BMI calculator in metric units.
What units does this calculator use?
The calculator is metric-first and uses centimeters for height and kilograms for weight. It also includes a standard unit option using feet, inches, and pounds.
What BMI range is considered healthy for adults?
A BMI from 18.5 to 24.9 is generally considered the healthy adult BMI range. BMI is only a screening measure and should be interpreted with other health information.
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