BMI Calculator
Calculate your Body Mass Index with full health analysis. Get your health category, ideal weight range, risk assessment & personalized recommendations.
Free BMI Calculator — Instant Body Mass Index & Health Analysis
Toolify's BMI Calculator computes your Body Mass Index instantly from your height and weight. It supports both metric (kg/cm) and imperial (lbs/ft-in) units and shows your health category — Underweight, Normal, Overweight, or Obese — along with your ideal weight range and health risk level.
The calculator also provides personalized recommendations based on your result. While BMI is a useful screening tool, it has limitations — always consult a healthcare professional for a complete assessment.
Frequently Asked Questions
What is BMI and how is it calculated?
Body Mass Index (BMI) is a measure of body fat based on height and weight. It is calculated by dividing your weight in kilograms by the square of your height in meters (kg/m²).
What are the BMI categories?
According to the WHO: Below 18.5 is Underweight, 18.5–24.9 is Normal weight, 25.0–29.9 is Overweight, and 30.0 and above is Obese.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It may overestimate body fat in athletes with high muscle mass, and underestimate it in older adults who have lost muscle. Always consult a healthcare professional for a complete assessment.
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is generally considered healthy for adults. However, optimal ranges can vary by age, sex, and ethnicity.
Does the calculator work with feet and pounds?
Yes. The tool supports both metric (kg/cm) and imperial (lbs/ft-in) units. Switch between them with the unit toggle.