Calculate your Body Mass Index (BMI) and understand your weight category.

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BMI Calculator

Calculate your Body Mass Index (BMI) and understand your weight category.

Inputs

Enter the required values for the calculation

Unit System

Weight

Height

📚What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. It's calculated as: weight (kg) ÷ height² (m²)

<18.5 Underweight

18.5-24.9 Normal

25-29.9 Overweight

≥30 Obese

Results

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What is a BMI Calculator?

A BMI (Body Mass Index) Calculator helps you determine if your weight is healthy relative to your height. BMI is a widely-used screening tool that categorizes adults as underweight, normal weight, overweight, or obese. While not a direct measure of body fat, it's a useful indicator for identifying potential weight-related health risks.

How to use

Select your measurement system (Imperial or Metric), enter your weight (pounds or kilograms), and your height (inches or centimeters). The calculator instantly shows your BMI score, weight category, and the healthy weight range for your height.

Frequently Asked Questions

What is BMI?

BMI stands for Body Mass Index. It is a numerical value of your weight in relation to your height, used to screen for weight categories that may lead to health problems.

How is BMI calculated?

For the metric system, the formula is weight (kg) divided by height in meters squared (m²). For the imperial system, it is weight (lbs) multiplied by 703, divided by height in inches squared (in²).

What are the BMI categories?

Standard categories are: Underweight (BMI less than 18.5), Normal weight (BMI 18.5–24.9), Overweight (BMI 25–29.9), and Obesity (BMI 30 or greater).

Is BMI an accurate measure of body fat?

While BMI is a useful general screening tool, it does not directly measure body fat. It may misclassify athletes with high muscle mass as overweight or fail to identify excess body fat in older individuals.

Can I use this calculator for children?

This calculator is generally designed for adults (age 18+). For children and teens, BMI is age- and sex-specific and is often referred to as BMI-for-age.

How often should I check my BMI?

You can check your BMI periodically, such as during annual health check-ups. However, it is more important to monitor overall health indicators and how you feel physically rather than focusing solely on the number.

Your Next Steps

Calculate your TDEE

Know exactly how many calories you need

Find your ideal weight

Based on height, age, and frame

Check body fat percentage

Understand your body composition

Understanding Your Challenges

We've analyzed common issues users face with BMI Calculator

3 Pain Points Identified

1 User Types Analyzed

1 High-Impact Issues

3 Solutions Ready

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Quick Improvements

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Pain Point Impact Analysis

Overall Impact Score43.5/10

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Impact Breakdown

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Low: 0

Based on your profile, we've identified 1 key areas where this calculator could help you. Consider exploring the solutions to address these challenges.