BMI Calculator

Use our BMI Calculator to check your body mass index online quickly and accurately.

Enter Your Details

Measurement System
Imperial (US)
Metric
Weight 150 lbs
lbs
Height 5' 9"
ft
in

What BMI Actually Means

BMI is a quick way to check if you're at a healthy weight for your height. It's not perfect - athletes might have high BMI from muscle, not fat - but it's a good starting point for most people.

Extra Info (Optional)

Age 35 years
years
Gender
Show ideal weight range
Your BMI
22.5
Normal Weight
Weight Category
Normal
Healthy BMI Range
18.5 - 24.9
Ideal Weight Range
136 - 172 lbs
Weight to Lose/Gain
You're in a healthy range!
Underweight
< 18.5
Normal
18.5 - 24.9
Overweight
25 - 29.9
Obese
≥ 30
Underweight
Normal
Overweight
Obese
Underweight
Normal
Overweight
Obese

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Why Check Your BMI?

Your BMI gives you a quick snapshot of where you stand health-wise. Think of it like checking your car's tire pressure - it's not everything, but it tells you if something might need attention. Most doctors use it as a starting point when they're checking your overall health.

How This BMI Calculator Works

It's pretty simple, really. You just tell us how tall you are and how much you weigh, and we do the math. Whether you use pounds and feet or kilograms and centimeters, we can handle it. The formula's been around for a while, but we make it easy to use.

What Your BMI Number Means

Things to Keep in Mind

BMI isn't perfect. If you're really muscular (like a serious athlete), your BMI might say you're overweight when you're actually just super fit. Older folks might have a normal BMI but still have too much body fat. And it doesn't work well for kids or pregnant women. But for most regular people, it's a helpful tool.

What to Do With Your Results

If your BMI isn't where you want it to be, don't panic. Just use it as motivation to make some healthy changes. Maybe start walking more, cut back on soda, or add some veggies to your meals. Small changes add up over time!

Making Sense of Your BMI

A little knowledge about what your BMI means for your health

Health Stuff to Think About

If your BMI's not in the normal range, you might have a higher chance of heart problems, diabetes, or other health issues. It's worth paying attention to.

Food Choices Matter

Eating more whole foods, watching your portions, and drinking enough water can all help you get to a healthier weight. You don't need a crazy diet - just better choices.

Get Moving

Aim for at least 30 minutes of activity most days. It doesn't have to be gym torture - walking, gardening, or playing with your kids all count.

Talk to a Pro

BMI is just one piece of the puzzle. If you're worried about your health, chat with a doctor. They can give you advice that's actually tailored to you.

Questions People Usually Ask

Here are answers to some common questions about BMI

How does this BMI calculator work?
It's super simple. You give us your height and weight, and we do the math. We use the same formula doctors use: your weight divided by your height squared. We can do it in pounds and inches or kilograms and meters - your choice.
Is there a different calculator for men and women?
The math is the same for everyone, but men and women often have different body types. Men usually have more muscle, women often have more body fat. Our calculator gives you info that makes sense for your gender.
What's a good BMI number?
Anything between 18.5 and 24.9 is considered normal. Below that is underweight, 25 to 29.9 is overweight, and 30 or higher is obese. But remember, it's just a guideline, not the final word on your health.
How accurate is BMI really?
It's a decent starting point for most people, but it's not perfect. If you're super muscular, your BMI might be high even though you're healthy. Older folks might show normal BMI but still have too much fat. It's one tool among many.
Can kids use this calculator?
This one's for adults only (18 and up). Kids and teens need special charts that account for their age and growth patterns. Ask your pediatrician for help with that.
I'm an athlete - will my BMI be accurate?
Probably not. If you lift weights a lot or are seriously into sports, your muscle weight might make your BMI look high even though you're super fit. You might want to check your body fat percentage instead.