Convertor Pro

Convertor Pro

10,000 - 50,000 downloads

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All the units you need to convert, wrapped in the best user interface: as easy and intuitive to use as a calculator. It's unit conversion done right!

• Converts as you type (no "Convert" button to press)
• Use mixed units, like feet+inches
• Freely mix fractions (like ½) with decimals (like 0.5)
• Switch units by swipe, long-press, or menu
• Unit calculator with clipboard "memory"
• Supports tablets
• Three UI skin options: Holo Dark, Holo Light, and Classic Gray
• Includes Chinese and Hong Kong units
• Unit categories cover everything from the basics of length, weight and volume to more specialist measurements like magnetic flux density, torque, or radioactive decay. For a full list, please see the Convertor website,
• Currency conversions - converts the major world currencies listed by the Canadian and European Central Banks, complete lists at and - but please note that additional currencies can't just be added at will. The currency rates in the app have to come from somewhere, and if these banks don't list your favored currency, then the app can't show an exchange rate for it.

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Recently changed in this version

• Add Holo Light skin
• Rework button graphics for Holo Dark
• Add dynamic row-sizing to display/editing area
• Add new fraction increments: 1/10, 1/20, 1/25, 1/50
• User request: add ability "to turn categories on and off at will, preserving the unit selection"
• User request: increase the font size of the unit display on the main screen (Android 4.x)
• Brighten colors in app icon
• Fix bug: Pro showing an upgrade message from the Category list
• Currency exchange-rate fixes

Comments and ratings for Convertor Pro
  • (75 stars)

    by Jeremy Clow on 25/03/2014

    Easy to use and extremely customizable. Live that I can see three different conversions at once.

  • (75 stars)

    by Steve Smith on 23/03/2014

    There are two must-have apps for my mobile device: a password safe; and a unit converter. I'm Australia-based but have worked for a US company for nearly 25 years. I use unit converters a lot and have tried more than a dozen of them. I keep coming back

  • (75 stars)

    by Mario Donoso on 16/03/2014


  • (75 stars)

    by Mike Paterson on 05/02/2014

    What with superb Support and an exceptional App made awarding this title an easy 5 Stars. Everything about the App shows professionalism. From the layout to options available, no other conversion App comes close. Need to convert kg to St + lb or day's

  • (75 stars)

    by Thom Beebo on 03/02/2014

    There is no similar app on GP that even comes close to the functionality & info in this app. When Google assigns the term "TOP DEVELOPER", Sterling Udell's apps should be the "standard" by which all others "given" that designation are judged. Purchase his

  • (75 stars)

    by Amando Ro on 02/02/2014

    Great app, love it. I have it in my tablet and before intallit in my new mobile I try some free apps, but weren't as friemdly as this ap, so drop it. Pricr really wort it!

  • (75 stars)

    by วุฒิพงษ์ ยุทธยงค์ on 19/01/2014

    This app is good but could be better of we can adjust font size (unit) it is very small and hard to see.