BMI Calculator
BMI Calculator
Use this calculator to check your body mass index (BMI).
Height
cm.
Please enter value between 125 and 225.
Weight
kg.
Please enter value between 10.0 and 500.0 ( one decimal ).
Height
ft.
in.
Please enter value between 4.2 and 7.3
Weight
lb.
st.
Please enter value between 22.0 and 1000.0 ( one decimal ).
Calculate BMI 
Use this calculator to check your body mass index (BMI), which can be a helpful tool in determining your weight category. Or, use it to calculate your child’s BMI.
Bmi Calculator
require
require
require
require
Your BMI is......
| BMI | Classification |
|---|---|
| less than 18.5: | Underweight |
| 18.5 - 24.9: | Normal weight |
| 25 - 29.9: | Overweight |
| 30 - 34.9: | Class I Obese |
| 35 - 39.9: | Class II Obese |
| 40 upwards: | Class III Obese |
Child & Teen BMI Calculator
This calculates BMI and shows a visual dot on a chart with colored bands (adult thresholds shown for quick reference). For children 2–19 years, use BMI-for-age percentiles for clinical interpretation.
Tip: use kg/cm for easiest results.
Calculated BMI
—
—
Interpretation note
For ages 2–19, BMI must be interpreted with age & sex percentiles (CDC/WHO).
Legend & thresholds (adult)
Underweight < 18.5 | Healthy 18.5–24.9 | Overweight 25–29.9 | Obese ≥ 30