Growth Tips

BMI Calculator: Check Your Body Mass Index & Healthy Weight Range

Find your Body Mass Index in seconds - enter your height and weight to see your BMI, what it means, and the healthy weight range for your height, with guidance built for kids, teens, and adults.

Alan McSwiggin

Reviewed by Doctor Taller Editors

Updated Aug 10, 2026

1 min

Free Tool

Find Your BMI & Healthy Weight Range

Answer a couple of quick questions about height and weight to see where you land — with plain-language guidance built for kids, teens, and adults alike.

For adults, ages 18 and up. Have a child or teen? Use the "Kids & Teens (2–19)" tab above — kids' BMI is read differently (as a growth percentile, not fixed categories).

Age (optional)

Gender (optional)

Height (cm)

Weight (kg)

This tool is for general informational purposes only and is not a medical diagnosis. BMI does not directly measure body fat and does not account for muscle mass, bone density, or body composition. Consult a healthcare provider for a full assessment of growth, weight, or health status.

References

CDC — Adult BMI Categories. https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html
ClinCalc — Ideal Body Weight (Devine Formula). https://clincalc.com/kinetics/idealbw.aspx
CDC — Extended BMI-for-Age Growth Charts (2022). https://www.cdc.gov/growthcharts/extended-bmi.htm

FAQs

Not exactly — kids and teens are usually assessed with age- and sex-specific growth percentiles, not adult BMI categories. Check with a pediatrician for an accurate read.

BMI alone doesn't diagnose anything — it's just a screening number. If your result falls here, it's worth a conversation with a healthcare provider.

Yes, the formula and categories are unisex. Gender only matters for the ideal-weight estimate in the second tool.

BMI Calculator: Check Your Body Mass Index & Healthy Weight Range

Find Your BMI & Healthy Weight Range

References

FAQs

Is BMI accurate for children and teens?

What should I do if my BMI is overweight or obese?

Is BMI calculated the same way for men and women?