Simple and unobtrusive unit converter for most needs. It can be used as a regular app window but is also available any time in the Today Notification Center (needs to be added after download).

- Angle, Area, Currency, Data Units, Energy, Fuel Efficiency, Length, Mass, Power, Pressure, Speed, Temperature, Time, and Volume
- Rates for 37 currencies (Source: ECB; Floatrates)
- Settings (in menubar) for: light and dark mode; keeping the window on top; thousands separator; decimal places
- Swapping of units
- Share conversion via mail, messages etc.
- Touch Bar support for preferences

Localized to: Arabic, Chinese (Simplified), Czech, Danish, Dutch, English, French, German, Greek, Hungarian, Korean, Indonesian, Italian, Japanese, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, Turkish.

Why the name Euler: Leonhard Euler (1707 - 1783) was a Swiss mathematician born in Basel, which is also the hometown of the developers

What’s New

Version 1.7

- Added currencies CRC, JMD, PEN
- Fixed service for alternative currency source

Ratings and Reviews

3.5 out of 5
2 Ratings

2 Ratings

Maxx! ,

Where’s the metric???

All I needed was to convert inches to centimeters and vice versa, and there’s only Meters… Decimals are cool and all, but would you please add Centimeters and Millimeters? Also the dropdowns don’t stay open.
Really should be free or $0.99 for such a basic widget. But I’d raise this review to a 3 or 4 if it had CM and MM.


Lakehorn AG
6.8 MB

OS X 10.10 or later, 64-bit processor


English, Arabic, Czech, Danish, Dutch, French, German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Thai, Turkish

Age Rating
Rated 4+
© 2017-2019 Lakehorn AG


  • Family Sharing

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

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