BMI Calculator
Body mass index (BMI) is a simple ratio of weight to height used as a screening measure. Enter your height and weight to see your BMI, the standard category and a healthy weight range for your height.
BMI
23.51
Category
Healthy weight
Healthy weight range for your height
56.66 – 76.26 kg
Weight to reach BMI 18.5
56.66 kg
Weight to reach BMI 24.9
76.26 kg
Your weight in lb
158.73 lb
How this was worked out
- Step 1Height in metres = 175 cm ÷ 100 = 1.75 m
- Step 2Height squared = 1.75 × 1.75 = 3.06
- Step 3BMI = 72 ÷ 3.06 = 23.51
BMI does not distinguish muscle from fat, so athletes and very muscular people can fall into the "overweight" range despite low body fat.
Important
This tool provides an estimate for general information only. It is not a medical diagnosis, and it does not replace advice from a qualified health professional. Body composition, ethnicity, age and medical history all affect the real picture — speak to a doctor or dietitian before making changes to your diet, training or medication.Formula
How it works
- 1BMI divides your weight in kilograms by the square of your height in metres.
- 2The standard adult categories are: under 18.5 underweight, 18.5–24.9 healthy, 25–29.9 overweight, 30 and above obese.
- 3It is a population-level screening tool, not an individual diagnosis — it ignores muscle, bone density and fat distribution.
Example
Input
175 cm, 72 kg
Result
BMI 23.5 — healthy weight
Frequently asked questions
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