BMI Calculator

Body Mass Index (BMI) is a simple screening measure that relates weight to height. This calculator works in both metric and imperial units and tells you which general weight category your BMI falls into.

How to Use This Tool

  1. Choose metric or imperial units.
  2. Enter your weight and height.
  3. Click Calculate BMI to see your result and weight category.

Formula

Metric: BMI = weight (kg) / height (m)² Imperial: BMI = 703 × weight (lb) / height (in)²

Why Use ToolVigo's BMI Calculator

  • Supports both metric (kg/cm) and imperial (lb/ft-in) units.
  • Classifies the result into standard BMI categories.

Privacy & Security

This tool runs entirely in your browser. Your input is never uploaded to ToolVigo's servers, and nothing is stored once you leave the page.

BMI is a general screening tool, not a diagnosis. It does not account for muscle mass, bone density, age or sex, and should not replace advice from a qualified healthcare professional.

Frequently Asked Questions

Is BMI an accurate measure of health?

BMI is a widely used screening tool but has known limitations — it doesn't distinguish muscle from fat, so athletes and very muscular individuals can show a higher BMI without excess body fat.

What is considered a healthy BMI range?

A BMI of 18.5–24.9 is commonly classified as "normal weight" by major health organizations, though healthy ranges can vary by individual factors.

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