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What is BMI and Why Is It Important?

BMI (Body Mass Index) is a simple measure of whether your weight is healthy for your height, categorized as underweight, normal, overweight, or obese. While it doesn’t account for muscle or body composition, it’s a helpful starting point for assessing health risks. Use our BMI Calculator to check yours!

Metric & Imperial Units​

Current BMI

Healthy BMI Range

Ideal Range

BMI calculator

Health Resources and Tools

Your health journey begins with the basics—and BMI (Body Mass Index) is one of the most important. Our tools give you clear insights into your weight and what it means for your overall health. Built for ease and accuracy, these resources help you make smarter, data-driven choices.

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Use the section below to explore how BMI is calculated, what your score says about your health, and what steps you can take to stay in a healthy range. Whether you’re just getting started or optimizing your routine, understanding your BMI is a powerful first step.

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BMI and Muscle Mass

BMI doesn’t account for muscle mass, meaning that individuals with a high muscle-to-fat ratio, like athletes, may appear "overweight" according to BMI standards. Learn how to interpret your BMI if you have a muscular build, and discover additional measurements like body fat percentage for a clearer picture.

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BMI and Health Risks

Your BMI is more than just a number—it can indicate potential health risks like heart disease, diabetes, and high blood pressure. Our guide explains the health risks associated with different BMI categories and provides actionable tips on how to improve your health, regardless of your BMI.

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Try Our Other Free Calculators

Body Fat

Estimate your total body fat percentage based on weight and waist to understand your current health and fitness status.

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TDEE

Discover how many calories your body burns each day based on activity level, age, weight, and gender.

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TDEE calculator

Ideal Bodyweight

Calculate your healthiest weight range using height and gender to set realistic, science-backed fitness targets.

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Ideal bodyweight calculator
These calculators are a game-changer! They help me fine-tune my workouts and nutrition with ease.

Frankie

Super easy to use and incredibly accurate. The TDEE and macronutrient calculators have helped me stay on track.

Jesse

I love having everything in one place! These tools give me the insights I need to improve my fitness.

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