BMI Pro · Personal BMI Calculator
Your BMI, body fat and ideal weight in seconds
Effortlessly calculate BMI and Body Fat. Get health insights and understand your nutritional status in a simple, user-friendly app.
- Free
- No ads
- No account
- Works offline
A look inside the app
Know your number, and what it means
A BMI on its own is just a figure. BMI Pro places it on the scale used by the World Health Organization, so you can see the category it falls into.
Your measurements never leave your phone
BMI Pro stores your height, weight, date of birth and sex on your device and nowhere else. There is no account to create, no server to sync with, and no analytics or tracking. It works with aeroplane mode on.
Read the privacy policyEverything you need, nothing you don’t
Body Mass Index
Calculate your BMI in a tap, together with the ideal weight range for your height.
Body Fat percentage
Estimate body fat from your BMI, age and sex, so the result is personal rather than generic.
Nutritional status
See where you land on the scale, with categories aligned to WHO guidelines.
Learn as you go
Built-in explainers cover what BMI and body fat actually measure, and where they fall short.
Metric and imperial
Kilograms, pounds and stones. Centimetres or feet and inches. Switch whenever you like.
Light and dark
A calm interface that follows the look you prefer, in English, German and Polish.
Effortless calculations
Enter your height once
Your height lives in your profile, so a new BMI reading only ever asks for your weight. No re-typing the same numbers.
Body fat that accounts for you
Body fat is estimated from your BMI along with your age and sex, using a published regression formula rather than a one-size-fits-all table.
Common questions
Is BMI Pro really free?
Yes. BMI Pro is free to download on both the App Store and Google Play, and it shows no advertising.
Does it need an internet connection?
No. Every calculation happens on your phone, so the app works fully offline, including in aeroplane mode.
What counts as a healthy BMI?
The World Health Organization treats a BMI between 18.5 and 24.9 as normal weight. Below 18.5 is underweight, 25.0 to 29.9 is pre-obesity, and 30.0 or above is obesity.
How is body fat percentage calculated?
From your BMI together with your age and sex, using a regression formula published in peer-reviewed research. It is a well-founded estimate, not a substitute for a body-composition scan.
Which units does the app support?
Kilograms, pounds and stones for weight, and centimetres or feet and inches for height. You can switch at any time in Settings.
Is my health data collected or shared?
No. Your height, weight, date of birth and sex are stored only on your device. There is no account, no server and no analytics, so nobody else can see your data.
Start with a single number
Free on iPhone and Android. No account, no ads, no waiting.