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BMI Calculator
Calculate your Body Mass Index and healthy weight range
ft
in
lbs
cm
kg
yrs
Your BMI
0.0
Normal
Underweight
<18.5 Normal
18.5–24.9 Overweight
25–29.9 Obese
≥30
<18.5 Normal
18.5–24.9 Overweight
25–29.9 Obese
≥30
0
Min Healthy (lbs)
0
Max Healthy (lbs)
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To Gain/Lose
What is BMI?
Body Mass Index (BMI) is a measure calculated using your height and weight to categorize your weight status. While not a perfect measure of health, it's a useful screening tool used by healthcare professionals worldwide.
BMI Formula
BMI = weight(kg) / height(m)²
Imperial: BMI = 703 × weight(lbs) / height(in)²
Imperial: BMI = 703 × weight(lbs) / height(in)²
BMI Categories (Adults 20+)
- Below 18.5 — Underweight
- 18.5 – 24.9 — Normal (Healthy Weight)
- 25.0 – 29.9 — Overweight
- 30.0+ — Obese
Limitations: BMI doesn't account for muscle mass, bone density, age, or fat distribution. Athletes may have a high BMI due to muscle, not fat. Consult a healthcare provider for a full assessment.