Free BMI Calculator

Calculate Body Mass Index with health ranges. Free, fast, and private—all processing happens in your browser.

Tool component coming soon...
Ad Space (336x280)

Calculate your Body Mass Index (BMI) and understand what it means for your health. Our BMI calculator works with both metric (kg/cm) and imperial (lbs/inches) measurements.

BMI Categories

| BMI Range | Category | |-----------|----------| | Under 18.5 | Underweight | | 18.5 - 24.9 | Normal weight | | 25.0 - 29.9 | Overweight | | 30.0 - 34.9 | Obesity Class I | | 35.0 - 39.9 | Obesity Class II | | 40.0+ | Obesity Class III |

Important Notes

BMI is a screening tool, not a diagnostic measure. It doesn't account for muscle mass, bone density, age, or gender differences. Always consult healthcare professionals for comprehensive health assessments.

Frequently Asked Questions

What is BMI?

BMI (Body Mass Index) is a measure of body fat based on height and weight. It helps assess whether you are underweight, normal weight, overweight, or obese.

How is BMI calculated?

BMI = weight (kg) / height² (m²). For pounds and inches: BMI = (weight × 703) / height².

What is a healthy BMI range?

A healthy BMI is typically between 18.5 and 24.9. Under 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Is BMI accurate for everyone?

BMI is a general guide and may not be accurate for athletes, elderly, or pregnant women. Consult a healthcare professional for personalized advice.

Related Tools