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

Version 1.2

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

Ratings and Reviews

setilsn ,

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.

Dreamthr4 ,

What Gives Here? Currency Doesn’t Work!

OK, it’s FREE, so I won’t make a big deal out of this. The reason I needed this app was for Currency converting. I enter 49 for UK Pound and what shows uo on the other side of the window for US Dollar? 49! I tried several other country currencies and every time whatever you entered on left side appeared the same on the right side. No change at all. I tried some of the other converters, and they seemed to work OK. But the one I needed, the one I particularly needed, the app that can convert worldwide currencies, DOESN’T WORK! I was so stunned by this I just continued to laugh it was so unbelievable! BTW: I rarely, if ever, write reviews for apps. I just don’t bother to take the time. But this app made me laugh so hard, I just had to let the world know that this must be a joke. Better luck next time and thank God it didn’t cost me anything but the time it took to write this review.

NDDonna ,

An Excellent Litte Application!

This is an amazing little program that I have come to rely on for a variety of conversions as well as just for fun when learning new terms.

When you first open the application you will see a drop-down window appear from the top of your desktop. Following the pointer at the top of the window you will notice that a small circle with a conversion symbol has been added. Clicking on it will open or close the drop-down. (Neat, right?)
If you want to quit the program altogether, do a Right-Click on the icon and choose Quit from the Drop-Down menu. (To do a Right-Click using your mouse, use your right middle finger to push down the right side or button on the mouse. For Lefties, do the reverse.)
While the conversion window is open, you can also use Command key + Q at the same time to Quit the program. (That combination will cause almost all programs to Quit.)

A program with many choices that is easy to use. What more could you ask for! I appreciate the work that went into creating it.


Chatsworth and Whitton Limited
2.5 MB

OS X 10.7 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.