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 Unit Converter free?

Yes. Unit Converter is 100% free with no signup and no usage limits.

Does Unit Converter upload my data?

No. Unit Converter runs entirely in your browser. Your data never leaves your device.

Do I need to install anything?

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

AHX

Unit Converter

Length, weight, temperature, area, volume, speed, data.

From

1 m0.001 km

1 m × 1.000e+0 ÷ 1.000e+3 = 0.001 km

Popular conversions

cm to in kg to lb C to F km to mi m to ft L to gal MB to GB g to oz mm to in F to C lb to kg in to cm

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

About Unit Converter

Convert between any units — length, weight, temperature, area, volume, speed, and digital storage. Switch between metric and imperial with one click. The converter handles every common unit and updates instantly as you type.

Common use cases

Convert meters to feet for construction or DIY
Convert Celsius to Fahrenheit for weather
Convert kilograms to pounds for fitness tracking
Convert square meters to square feet for real estate
Convert GB to MB or bytes for storage planning

Wolfram Alpha — unit + scientific calc

affiliate

When a unit conversion is part of a larger equation, Wolfram Alpha handles the dimensions end-to-end (e.g. "5 m/s in furlongs/fortnight").

wolframalpha.com

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