DevHive

BMI Calculator

Calculate BMI in metric or imperial

How to Use BMI Calculator

  1. 1

    Enter your height and weight. Choose metric (cm and kg) or imperial (feet, inches, and pounds).

  2. 2

    Click Calculate to see your BMI score.

  3. 3

    The tool shows which BMI category your score falls into: underweight, normal, overweight, or obese.

About BMI Calculator

Calculate your Body Mass Index (BMI) using metric or imperial units. Get BMI category and health range instantly.

Best Use Cases

  • •Checking your BMI category as part of a health assessment
  • •Tracking BMI changes over time during a fitness program
  • •Understanding where your weight falls on the BMI scale
  • •Quickly comparing BMI using metric or imperial measurements
  • •Getting a baseline health metric for a doctor's visit discussion

Examples

Health check

Enter your height and weight. See your BMI value and which category it falls into (underweight, normal, overweight, obese).

Unit switch

Toggle between metric (kg/cm) and imperial (lbs/inches) to calculate BMI with whichever units you know.

Progress track

Calculate your BMI at different weights to set a realistic target weight for your fitness goals.

Common Mistakes to Avoid

  • !Treating BMI as a definitive health diagnosis rather than a screening tool
  • !Not accounting for muscle mass, which can produce high BMI in fit individuals
  • !Confusing height input units between centimeters, meters, and inches

Limitations

  • –BMI does not distinguish between muscle mass and fat mass
  • –Not accurate for athletes, elderly, pregnant women, or growing children
  • –Does not account for body composition, bone density, or fat distribution

Disclaimer

This tool is for informational and educational purposes only. Results are estimates and should not be treated as financial, tax, legal, or investment advice. Always consult a qualified professional before making financial decisions.

Frequently Asked Questions

What is a healthy BMI?

A BMI between 18.5 and 24.9 is considered normal weight. Below 18.5 is underweight, 25–29.9 is overweight, and 30+ is obese.

Is BMI accurate?

BMI is a general screening tool and doesn't account for muscle mass, age, or body composition. Consult a doctor for a full health assessment.