广告位

Online BMI Body Mass Index Calculator

Great for daily health tracking and body-weight management, enter height and weight to get instant BMI, category, and healthy range with unit switching.

Enter your height and weight to calculate BMI instantly

Unit System

Height (cm) Weight (kg)

Age (optional) Sex (optional)

Result

BMI Value 22.5

Category Normal

Healthy Weight Range 53.5 - 72.3 kg

Note: BMI is for general reference and not a medical diagnosis.

Docs

The Online BMI Body Mass Index Calculator helps you evaluate your weight status quickly. It supports both metric and imperial units, and shows BMI value, category, and healthy weight range in real time. It is useful for daily health tracking, cutting or bulking phases, and pre-checkup self-assessment.

Key Features

Dual units: Metric (kg/cm) and Imperial (lb/ft/in)
Instant calculation while typing
Clear categories: Underweight, Normal, Overweight, Obese
Healthy range estimation based on your height
Fully client-side processing in the browser

How to Use

Select your preferred unit system.
Enter height and weight.
Optionally enter age and sex for personal reference.
Read BMI value, category, and healthy range.
Use Reset to restore default values.

BMI Reference

BMI < 18.5: Underweight
18.5 <= BMI < 25: Normal
25 <= BMI < 30: Overweight
BMI >= 30: Obese

Notes

BMI is a general screening metric and not a medical diagnosis. For athletes, pregnant people, or special conditions, combine BMI with body fat percentage and professional medical advice.

Last verified: 2026-04-15 Source: IDouble/BMI-Calculator-JavaScript