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Health & Fitness

BMI Calculator.

Determine your Body Mass Index (BMI) and see if you fall in healthy ranges.

FREE INSTANT RESULTS NO SIGNUP UPDATED 2026

Parameters

lbs
in

Summary Output

Your BMI
23.0 kg/m²
Weight Status
Normal
BMI Prime
0.92

How to Use

Enter your weight and height. The calculator instantly evaluates your BMI and categorizes your status as Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), or Obese (>=30).

Example Calculation

For a person weighing 160 lbs and measuring 70 inches tall (5 ft 10 in), BMI = 703 * 160 / 70² = 22.96, which is in the Normal weight category.

Formula

BMI = 703 * Weight (lbs) / Height (inches)²

Frequently Asked Questions

Common questions and answers about the BMI Calculator.

The BMI Calculator is a free online tool designed to determine your body mass index (bmi) and see if you fall in healthy ranges. It allows you to perform these calculations quickly and accurately without manual computations.
Enter your weight and height. The calculator instantly evaluates your BMI and categorizes your status as Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), or Obese (>=30). Once you enter these values, the calculator will automatically compute and display the results instantly.
The BMI Calculator uses the following formula to calculate your results: BMI = 703 * Weight (lbs) / Height (inches)² This formula is standard and widely accepted for these types of calculations.
Sure! Here is a practical example: For a person weighing 160 lbs and measuring 70 inches tall (5 ft 10 in), BMI = 703 * 160 / 70² = 22.96, which is in the Normal weight category. This example demonstrates how the inputs are processed through the formula to yield the final results.
To use the BMI Calculator, you need to enter: Weight (lbs), Height (inches). These inputs help the tool calculate precise results tailored to your situation.
The BMI Calculator outputs the following details: Your BMI, Weight Status, BMI Prime. This comprehensive breakdown helps you understand the different aspects of the calculated figures.
Yes, the BMI Calculator is 100% free with no registration or signup required. It is fully responsive and optimized for mobile phones, tablets, and desktop computers.
Reliable Calculator provides a fast, clean, ad-free, and premium user experience. The BMI Calculator uses verified math formulas and provides instant results with visual breakdowns and examples, making it more intuitive than other tools.