Is Your Weight Healthy? Use This Free BMI Calculator

Is Your Weight Healthy?

Your weight relative to your height is one of the most commonly used health screening metrics. BMI (Body Mass Index) gives a quick snapshot, but context matters enormously. Here's what your number actually means.

How BMI Is Calculated

BMI = (weight in lbs × 703) ÷ (height in inches)². A person who is 5'7" and weighs 160 lbs has a BMI of 25.1 — just above the "normal" threshold. Use our free BMI calculator below for instant results.

What Your BMI Means

• Under 18.5 (Underweight): Associated with malnutrition, bone density loss, and immune function issues
• 18.5–24.9 (Normal): Lowest population-level health risk
• 25–29.9 (Overweight): Elevated risk — but context-dependent
• 30+ (Obese): Significantly elevated metabolic and cardiovascular risk

Beyond BMI — What Else to Track

Combine your BMI with waist circumference, blood pressure, fasting glucose, and cholesterol for a complete metabolic health picture. No single number tells the full story.