Runs entirely in your browser — nothing is uploaded.
Category
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Common conversions
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Frequently asked questions
Is it free and private?
Yes, free and fully offline in your browser.
What can I convert?
Length, weight, temperature, area, volume, speed, time, digital storage, pressure, energy and angle.
Does it work offline?
Yes — all the conversion factors are built in, so no server is needed.
Why is there no currency conversion?
Currency needs live exchange rates from a server; this tool stays 100% local, so it's left out.
How accurate is it?
It uses standard conversion factors at full floating-point precision, rounded only for display.
Can it convert temperatures correctly?
Yes — Celsius, Fahrenheit and Kelvin using the proper offset formulas, not just a multiplier.
How do I convert kilometers to miles?
Select Length as the category, type the value in the Kilometers field, and the Miles field updates instantly. You can also convert in the other direction.
How many pounds is 1 kilogram?
1 kilogram is equal to approximately 2.205 pounds.
How do I convert Celsius to Fahrenheit?
Select Temperature, enter the Celsius value and read the Fahrenheit result. The formula is (°C × 9/5) + 32.
Can I use the unit converter offline?
Yes. Once the page has loaded it works fully offline — no internet connection is needed for the conversions.