An offline unit converter for Windows
Fourteen categories of conversion in a desktop app that opens instantly — instead of a search result covered in ads.
Why do it in ConvertCraft?
A fast, private desktop toolkit — not another website that uploads your files.
14 categories, one app
Length, mass, temperature, area, volume, speed, time, data, energy, pressure and more — without a different website for each.
Opens instantly, no ads
A converter you keep in the taskbar beats a page that loads a banner before it answers you.
Bulk conversion
Convert a whole list of values in one pass instead of typing them in one at a time.
How to offline unit converter for Windows
4 steps, entirely on your PC.
Download ConvertCraft free from mes-dev.com.
Pick the category — length, mass, temperature, data and so on.
Type the value and choose the units. The result updates as you type.
Use bulk mode when you have a list rather than a single figure.
Frequently asked questions
Does ConvertCraft work without internet?
Yes for every unit category. The only feature that needs a connection is live currency rates, which are fetched when available and otherwise fall back to the last rates retrieved.
Which categories are covered?
Fourteen, spanning the everyday ones such as length, weight and temperature and the technical ones such as data size, energy and pressure.
Can I convert a whole list of values at once?
Yes. Bulk mode takes a list and converts every entry with the same units in one pass.
Is it free?
Yes — free to download and use on Windows 10 and 11, with no account, no ads and no subscription.
Get ConvertCraft free
Fourteen categories of unit conversion, cooking measures, body metrics and a world clock in one offline Windows app — no ads, no account, no subscription.
Download ConvertCraft