Understanding your Body Mass Index with BMI Count is one of the simplest ways to get a quick snapshot of your health. Whether you’re aiming to lose weight, gain muscle, or just monitor your fitness, BMI Count gives you an accurate and instant calculation all for free.
✅ Trusted by over 100+ users real users, with feedback
Our online BMI calculator is designed for everyone: men, women, kids, teens, and adults of all ages. No complex forms. No registration. Just enter your height, weight, age, and a few quick details, and get your very personalized BMI result in seconds with us.
Our tool is designed with keeping in mind to deliver completely free to use, built with medical-grade formulas, and also powered by real-time feedback. So whether you’re just starting out or fine-tuning your health journey, BMI Count is your go-to resource.
The BMI Count our tool uses internationally recognized formulas by WHO, NIC and CDC to calculate your Body Mass Index based on your:
Our BMI Calculator support both metric and imperial units, so that you can use whatever system you are comfortable with. Once you enter your details, we instantly calculate and deliver your BMI Count and give you a color-coded result, so you can quickly see where you stand, from underweight to healthy to overweight or obese.
But we don’t stop at just your BMI.
You’ll also get:
✅ Your ideal weight range based on your height
✅ Daily calorie estimates to maintain or reach your goal
✅ Two professional formulas for Body Surface Area (BSA)
✅ A detailed summary you can download, share, or save as PDF
Our Body Mass Index calculator is built with accuracy, privacy, and simplicity in mind. No data is stored, and you can use it as often as you like 100% free, no signup needed forever.
Our BMI results helps you understand whether your weight is within a healthy range for your height. Based on standards from the World Health Organization (WHO), here’s how BMI is typically classified:
| BMI Range | Category |
|---|---|
| Below 16 | Severe Thinness |
| 16 – 16.9 | Moderate Thinness |
| 17 – 18.4 | Mild Thinness |
| 18.5 – 24.9 | Normal Weight |
| 25 – 29.9 | Overweight |
| 30 – 34.9 | Obese Class I |
| 35 – 39.9 | Obese Class II |
| 40 and above | Obese Class III |
For example, a BMI of 22.5 falls in the “Normal Weight” category, while a BMI of 28.7 would be considered “Overweight.”
While BMI is a helpful screening tool, it doesn’t consider muscle mass, body fat percentage, or body shape. That’s why we also calculate additional health data like ideal weight and daily calorie needs to give you a more complete picture.
Not all BMI calculators are created equal. At BMI Count, we built this BMI free tool to go beyond just a number, it’s a full-body health check you can access instantly, at no cost.
Here’s why thousands of users choose our free BMI calculator:
✅ No signup required — use it anytime, anonymously
✅ Supports all units — cm/inches, kg/lbs, ft/stone
✅ Adjusts for age, gender, and activity level
✅ Includes ideal weight & calorie recommendations
✅ Zero ads, zero upsells — just real, helpful insights
Whether you’re planning to start a new diet, checking your current health status, or building a long-term fitness plan, this tool is here to give you fast, reliable answers for free.
You don’t need to download apps or create an account. Just enter your numbers, hit calculate, and get personalized results that matter for your next diet and better health.
Whether you are just getting starting with your fitness journey or you are a health-conscious parent, BMI Count is built to serve a wide range of users. Our tool adapts to your personal details and gives you insights that actually make sense.
For Men and Women
Track your weight range, understand your body composition, and set goals with confidence.
👉 Try the BMI Calculator for Men
👉 Try the BMI Calculator for Women
For Parents and Teens
Use the tool to monitor your child’s health and compare it to healthy BMI ranges by age.
👉 Check out our BMI Calculator for Kids
👉 Check out our BMI Calculator for Teens
For Fitness Starters and Athletes
Set realistic weight goals and use calorie estimates to guide your workout and nutrition plan. Our calculator includes both BMI and BMR (Basal Metabolic Rate) for better planning.
For Health Coaches and Professionals
Get a quick baseline to advise clients or patients. Use our downloadable results for easy sharing and reference.
No matter your age, body type, or fitness level, our BMI Count helps you take the first step toward better health.
You can calculate your BMI by dividing your weight in kilograms by your height in meters squared. Or just enter your height and weight into our free calculator, and we’ll do the math for you instantly.
BMI is calculated using these formulas:
Our calculator supports both systems.
BMI is calculated using a person’s weight and height. The standard formulas are:
Our calculator supports both formulas automatically based on your selected unit system.
To calculate BMI using kilograms and centimeters:
Example: If you are 170 cm tall and weigh 65 kg, your BMI is:
BMI = 65 / (1.7 × 1.7) = 22.49
You can simply use our tool — it handles all the conversion and calculation instantly for you.
A healthy or normal BMI falls between 18.5 and 24.9. Anything below 18.5 is considered underweight, and anything over 25 falls into overweight or obese categories.
A healthy or normal BMI falls between 18.5 and
Ideal body weight varies by height, gender, and age. Our calculator gives you a personalized ideal weight range along with your BMI result no need for manual formulas.
The formula is the same, but results can vary due to differences in muscle mass and fat distribution. That’s why our calculator lets you input gender for more accurate guidance.
Yes, but keep in mind that BMI for children is interpreted differently and often uses percentiles based on age and gender.
For more accurate results, use our specialized tools:
These calculators are designed to provide age-based insights following pediatric health standards.
Start your health journey today with our simple, accurate BMI Calculator. Designed for all ages and body types, it gives you more than just a number, you will get ideal weight ranges, BMR, and daily calorie needs in one quick result.
👉 No accounts, no subscriptions - just real answers, based on trusted medical formulas.
At BMI Count, we believe that health tools should be simple, science-based, and accessible to everyone no subscriptions, no logins, no paywalls.
We created this BMI calculator not just to give you a number, but from calculating your ideal weight range to estimating your daily calories and body surface area (BSA), our goal is to give you more than a metric, we give you context.
BMI Count is growing into a global health hub powered by data, built for people. We’re not a fitness app we are Free BMI Calculator to provide accurate health metrics that anyone can use to build their better health.
BMI Count is your trusted source for fast, accurate, and easy-to-use health calculators built to help you better understand your body, every day.
We offer a growing library of specialized BMI tools for all ages, genders, and unit systems. Whether you’re tracking your general BMI or using advanced metrics like BMR or ideal weight, our calculators are designed to give you results you can rely on instantly and without sign-up.
All tools on BMI Count are 100% free to use and based on medically recognized formulas. No subscriptions, no data tracking just helpful, science-backed health insights you can trust.