Yes. All 42 tools are 100% free with no signup, no ads in your face, and no hidden limits. The core tools will always be free.

Do AHX tools upload my data to a server?

No. Every tool runs entirely in your browser using JavaScript. Your data never leaves your device.

Can I use AHX offline?

Yes. Once the page has loaded, every tool works without an internet connection. AHX is installable as a PWA.

Is BMI Calculator free?

Yes. BMI Calculator is 100% free with no signup and no usage limits.

Does BMI Calculator upload my data?

No. BMI Calculator runs entirely in your browser. Your data never leaves your device.

Do I need to install anything?

No. BMI Calculator works in any modern web browser. Just visit the page and start using it.

AHX

BMI Calculator

Calculate Body Mass Index. Metric and imperial units.

Height (cm)

Weight (kg)

Runs entirely in your browser. No data leaves your device.

About BMI Calculator

Calculate your Body Mass Index (BMI) instantly. Enter your height and weight in metric or imperial units. See your BMI category (underweight, normal, overweight, obese) and healthy weight range. Everything runs in your browser.

Common use cases

Check if your weight is in a healthy range
Track BMI changes over time
Calculate BMI for adults and children
Determine healthy weight goals

MyFitnessPal — track nutrition

affiliate

BMI is a rough proxy. MyFitnessPal tracks what you actually eat and gives a more useful picture of health.

myfitnesspal.com

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