đ§ Body Fat Percentage Calculator
Calculate body fat instantly from bmi, age, sex (1 = male, 0 = female).
Results are estimates for information only and are not medical advice. See our disclaimer.
How to use the Body Fat Percentage Calculator
- Enter BMI, Age, Sex (1 = male, 0 = female).
- The result updates instantly as you type.
- Copy or note down your result.
How it works
Formulas: Body fat = 1.2*[BMI]+0.23*[Age]-10.8*[Sex (1 = male, 0 = female)]-5.4.
Example
Using the default values (BMI: 24, Age: 30, Sex (1 = male, 0 = female): 1):
Body fat19.5%
FAQ
Is the Body Fat Percentage Calculator free to use?
Yes. It is free, needs no signup and has no usage limits.
Is my data safe?
Yes. Everything is calculated in your browser, so what you type or upload is never sent to a server.
Can I use it on my phone?
Yes. KsWebProduction is built mobile-first and works in any modern browser.