Converter of Units7.3.3 - App Store

The unit converter feature from our popular aio Calculator is now available as a standalone app. Always free and without ads.

It's an easy to use and modern converter with a unique combination of features which include:
. Available on all iPad, iPhone and iPod devices
. Sidebar and Tab bar for easier navigation and sharing of data
. Multiple Windows
. Stage Manager
. Drag and Drop from the Sidebar to the edge of the screen to create new windows
. Context Menus
. Quick Start Guide
. Light and Dark appearance
. Multitasking
. Full support for drag and drop
. Quick Notes
. Capture text
. Keyboard shortcuts
. Pointer interaction
. Two finger swipe for quick editing in Unit Converter and History
. Slider for precision control
. Undo and redo
. HomeScreen icon for quick actions
. Spotlight search
. Accessibility features like VoiceOver and Dynamic Type (larger text)
. Allows you to share results; including using AirDrop
. Takes advantage of the larger display in iPad
. Settings to customize the app
. Conversions saved and restored for all measurements
. Quick Convert feature

Has close to 500 units in the following 38 measurements:
. Area
. Acceleration
. Angle
. Computer Data Storage
. Computer Data Rate
. Concentration - Glucose
. Currency
. Density
. Energy
. Electric Vehicle Efficiency
. Electrical Current
. Electrical Voltage
. Electrical Charge
. Electrical Resistance
. Electrical Inductance
. FlowRate-Liquid
. FlowRate-Dry
. Force
. Frequency
. Fuel Economy
. Illumination
. Ladies Shoe Size
. Length
. Luminance
. Mens Shoe Size
. Magnetic Field Strength
. Magnetic Flux
. Magnetic Flux Density
. Magnetomotive Force
. Mass / Weight
. Power
. Pressure
. Speed / Velocity
. Temperature
. Time
. Torque
. Volume - Liquid Capacity
. Volume - Dry Capacity

Date calculators
. Calculate the difference between two dates
. Add (or subtracting) from a given date

Tank Capacity
. Horizontal Cylinder
. Vertical Cylinder
. Rectangular
. Horizontal Oval
. Vertical Oval
. Horizontal Capsule
. Vertical Capsule
. Sphere

Mixture Calculator
. Calculate the needed volume for a mixture at a given ratio

Info feature
. Detailed description of the app available in all features
. Table of contents and search allow you to find topics of interest

Email requests to have more measurements or units added.

Future updates will continue to add more features.

Enjoy our app that, as always, is free and without ads!

Version History Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected focus and number pad problem in measurements
• Added show toolbar button to navigation bar (shows when toolbar has been hidden)
• General improvements and corrections 7.3.3 May 28 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected formatting problem in different locales
• General improvements and corrections 7.3.2 Apr 18 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 7.3.1 Apr 12 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• Corrected problem with Undo/Redo
• General improvements and corrections 7.3.0 Mar 10 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 7.2.0 Jan 11 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 7.1.0 12/19/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Added Mixture calculator
• General improvements and corrections 7.0.0 10/17/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Removed alert if user not signed into iCloud
• General improvements and corrections 6.1.1 06/23/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Converter now has conversions for Concentration - Glucose
• General improvements and corrections 6.1.0 04/10/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Improvements in iOS/iPadOS 18.x
• General improvements and corrections 6.0.0 03/27/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected problem with Electric Vehicle Efficiency converter
• General improvements and corrections 5.2.2 06/26/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Added Microliter (µl) to Volume - Liquid Capacity
• General improvements and corrections 5.2.1 05/23/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Added feet Inch unit in Length
• Added ability to favorite measurements (via context menu)
• General improvements and corrections 5.2.0 02/18/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS/iPadOS 17
• General improvements and corrections 5.1.0 11/22/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• General improvements and corrections 5.0.1 01/12/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS 16.x, iPhone 14 and Stage Manager for iPadOS 16
• Use iOS 16 Find feature in Information
• Added Electric Vehicle Efficiency to Measurements
• Optimized calculations in currency conversion feature
• General improvements and corrections 5.0.0 11/29/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected occasional problem with no units showing if another measurement was only showing favorites
• General improvements and corrections 4.2.8 09/26/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected problem with create new window button
• General improvements and corrections 4.2.7 08/31/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Improved scrolling performance of units in measurements and eliminated many occurrences of pasteboard banner
• General improvements and corrections 4.2.6 08/10/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected problem caused by missing USD currency
• General improvements and corrections 4.2.5 08/09/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected problem with createWindow button disappearing when Info modal sheet was shown
• Corrected problem with show/hide toolbar context menu in Tank Capacity (was not always reflecting the correct state)
• Mac Catalyst version now available
• General improvements and corrections 4.2.4 07/06/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected problem with currency not always using most recent data
• General improvements and corrections 4.2.2 03/14/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected problem with date add or subtract sometimes not scrolling after entering value in table
• General improvements and corrections 4.2.1 03/08/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Added use of Quick Note (enable in Settings)
• Added use of text capturing in text field and expression editor
• Added keyboard shortcuts (hold down Command)
• Added create new window using context menu or pinch on sideBar
• Added pointer interaction throughout app
• Modal views can now have their size adjusted to medium and large using the grabber
• General improvements and corrections 4.2.0 03/05/2022 Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Added iPadOS 15 Prominent style of window mode (looks like a Form Sheet) when creating new window
• Added iPadOS 15 context menu option to create new window to all sidebar entries that allow drag and drop
• Added iPadOS 15 pinch (out) gesture to create new window to all sidebar entries that supported drag and drop
• Other improvements and corrections 4.1.0 01/22/2022