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To download Converto - The Unit Converter from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

Converto - The Unit Converter

By Chatsworth and Whitton Limited

Open the Mac App Store to buy and download apps.


Converto is the best unit converter for your Mac. It makes changing between various units quick and easy. The app lives in your Mac's menubar and is always available at the click of a button. Instantly convert numbers into dozens of different types of units - anything from mass, energy, currencies, temperature, volume, length and much more.

Here is what Converto offers you:

⁕ Ability to make conversions in the areas of length, speed, distance, time, currency, power, energy, amongst a whole lot more
⁕ A live currency rate for up to date currency conversions
⁕ Remembering your last selections when you launch the app
⁕ Beautiful pixel perfect design which is Retina-ready
⁕ Extremely ease to use with a slick, clutter-free interface
⁕ Anchor button to make the app visible above all other apps, allowing you to carry out conversions on the go whilst referring to a particular source behind the app
⁕ Opacity control to adjust the transparency of the app window
⁕ Type in either the right or left column to get real time conversions

We hope Converto becomes a useful and important addition to your collection of handy utility apps, We plan on a very active development cycle, so please spread the word and keep sending us your feedback! Thanks :)

What's New in Version 1.2

- Added UK Gallons
- Better support for voice over
- Increased number of decimal places
- Added support for negative numbers


Screenshot 1

Customer Reviews

Part of my top NEED TO HAVE APPS...

On all builds of computer…mac or pc…I need to have several things. A means to calculate, calendar, conversion, prompt/terminal, note app, dictionary, password generator, password manager, music player, and finally map app or GEarth. Those are the just for day to day…not to mention a list for specialied tasks and the like. MY day to day list will never be without this app on my Mac…as it has proven it’s worth time and again when I lack metric conversion skills, weather conversion, and just being there for those odd times that seem to pop up when you want to understand more about what you are dealing with at that time…an invaluable tool for me and as important as having a dictionary handy.

Works well, simple to use, free

Not much more I can say about this app. The one thing I havn’t verified is the currency conversion. In my experience with several different methods, there’s always either a bit of a lag between the price you see and the current exchange rate, or the exchange rate you see is not quite the same one your bank/CC company will charge you. It is, however, perfectly fine for rough calculation if you find that cute little knick-nack from Denmark on eBay that you just have to buy. I keep it in my task bar for ready use.

Nice to have quick access to a good converter

The only issue I've been having is that the app auto launches and opens its window when I start my Mac or wake it from sleep. It would be better if the icon just remained in place until I actively selected it. Also, I was prompted to rate the app when I woke my Mac. At least wait until I use the app before requesting a rating. Hopefully the next version will fix these annoyances. As a converter, it's a good app, but would be nice to include an option to create custom conversions. As an Engineer, it does not convert all that I would use it for.

Converto - The Unit Converter
View in Mac App Store
  • Free
  • Category: Utilities
  • Updated:
  • Version: 1.2
  • Size: 2.5 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.7 or later, 64-bit processor

Customer Ratings

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