What Is a Simple BMI Calculator?
A simple BMI calculator gives you a quick estimate of body mass index using only height and weight.
Simple
Simple BMI Calculator
This simple BMI calculator gives you a fast way to calculate body mass index using standard inputs.
Your BMI Result
Fill in your height and weight, then click calculate to view your BMI result and healthy weight range.
Simple BMI Formula
Metric: BMI = weight (kg) ÷ height² (m²)
Imperial: BMI = (weight (lbs) ÷ height² (in²)) × 703
BMI Categories
| Category | BMI Range | Health Risk |
|---|---|---|
| Underweight | < 18.5 | Possible nutritional deficiency |
| Normal Weight | 18.5 – 24.9 | Low risk |
| Overweight | 25 – 29.9 | Moderate risk |
| Obese | ≥ 30 | High risk |
Frequently Asked Questions
The Body Mass Index (BMI) is a screening tool used to identify whether an adult is underweight, at a healthy weight, overweight, or obese. It is calculated by dividing a person’s weight in kilograms by the square of their height in meters.
You only need your height and weight.
Yes. It supports metric and imperial units.
Yes. It uses the same standard BMI formulas.
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