Question 1

How is BMI calculated?

Accepted Answer

BMI = weight (kg) / height (m)². You can enter metric or imperial units — we convert automatically.

Question 2

Is BMI accurate for everyone?

Accepted Answer

BMI is a rough screening tool. It doesn't account for muscle mass, so athletes should interpret results with care.

Question 3

Is this tool free?

Accepted Answer

Yes. Every UltraTools utility is 100% free with no sign-up, no watermarks and no usage limits.

Question 4

Are my files or data uploaded to a server?

Accepted Answer

No. This tool runs entirely in your browser. Your files and text never leave your device.

Question 5

Do I need to install anything?

Accepted Answer

No installation is required. UltraTools works in any modern browser on desktop, tablet and mobile.

BMI Calculator

Frequently asked questions