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Un1ts is a comprehensive unit converter for the Mac. This native app is built with Swift and SwiftUI to support the latest features of macOS. Just enter a value in a field then press the Return key to automatically convert to all units in a category.

Categories for unit conversion include:

  • Acceleration
  • Angle
  • Area
  • Data
  • Density
  • Energy
  • Force
  • Illuminance
  • Length
  • Mass
  • Power
  • Pressure
  • Radiation
  • Radioactivity
  • Speed
  • Temperature
  • Time
  • Torque
  • Volume

App Store - Un1ts is available exclusively on the Mac App Store.

Email - Questions, comments, and other feedback.

Twitter - Announcements, questions, and other feedback.

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Un1ts was originally released in 2013 for the Mac. It was written entirely in Objective-C and was one of the first apps I released on the Mac App Store. In 2019, I decided to create a new version of the app written in Swift and SwiftUI.

Privacy Policy

The Un1ts app does not collect any data. Settings such as number style and significant digits are stored on the user's computer.


Un1ts uses calendar versioning for releases. For example, release v20.4 refers to the version released in April 2020.

Available on the Mac App Store.

Developed by Gavin Wiggins © 2020