Free BMI Calculator

Check Your Body Mass Index Instantly

<18.5
18.5-24.9
25-29.9
30+
Your BMI --
Enter your height and weight

BMI Categories

Category BMI Range Health Risk
Underweight < 18.5 Higher risk
Normal 18.5 - 24.9 Low risk
Overweight 25 - 29.9 Increased risk
Obese 30+ High risk

Why Use Our BMI Calculator?

  • Metric & Imperial: Works with both measurement systems
  • Instant Results: See your BMI as you type
  • Visual Gauge: Easy-to-understand visual representation
  • Health Categories: Know your risk level at a glance
  • Mobile Friendly: Large touch targets, works on any device
  • No Signup: 100% free, no ads, no account required

Frequently Asked Questions

What is BMI?

BMI (Body Mass Index) is a numerical value of your body weight in relation to your height. It's used to estimate whether you have a healthy body weight for your height.

Is BMI accurate for everyone?

BMI is a general indicator and doesn't account for muscle mass, bone density, age, or gender. Athletes may have a high BMI due to muscle, not fat. Consult a healthcare provider for personalized advice.

What's the healthy BMI range?

For most adults, a BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Should I rely solely on BMI?

No, BMI is just one indicator of health. Other factors like blood pressure, cholesterol, blood sugar, and physical activity are also important. Always consult a healthcare professional for health advice.

Is this BMI calculator free?

Yes, completely free with no signup required. No ads, no upsells, just a clean BMI calculator.