• iPad split view and slide over mode for compatible devices (iOS 9+ only)
• Today Extension, view your most recent conversion (great for Currency updates)
• Elegant interface with 19 beautiful themes
• Full range of standard units for both metric (SI) and non-metric conversions
• Hundreds of non-standard units categorised for quick access: Geography, Nature, Everyday Objects, Sports, etc.
• Compound unit conversion on many units including time (e.g. hours, minutes, seconds), length, area, etc.
• Fraction input and output on some units (e.g. inches)
• URL Scheme support, automate conversions with apps such as Launch Center Pro.
• Adjustable decimal precision from 5 to 15 significant figures.
• A huge range of standard and non standard units from planck lengths to the size of the visible universe.
• Share conversions via Twitter, Facebook, email and messaging.

Convertible helps to visualise unit conversions in ways not possible with other unit converters: compare distance in miles to the length of the Amazon River, area in square yards to the size of a football field, the possibilities are endless.

More conversion types are being added with each release, currently Convertible can convert:
• Length
• Mass/Weight
• Area
• 161 Currencies including Bitcoin
• Energy
• Power
• Torque
• Volume
• Flow
• Pressure
• Force
• Fuel Economy
• Temperature
• Data
• Time
• Speed

Unit conversion is also entertaining and educational thanks to the many non-standard units of measure available.

“Stands out from many other apps of its type.” - The New York Times

"Convertible is one of the most peculiar and fun iPhone apps I’ve downloaded recently." -

"With customizable themes, amazing readability and an intuitive and easy to use interface, Convertible is definitely in a class of its own." - 4.5 stars,

What’s New

Version 4.1.2

• iOS 12 Compatibility
• Status bar is now always visible
• Minor bug fixes and improvements

Ratings and Reviews

4.7 out of 5
77 Ratings

77 Ratings



This app is AMAZING!!! Not only can you convert the units we are all used to (inches to centimeters, litres to gallons, the American dollar to Swiss Francs, etc), but this even has units that boggle the mind! Find out how many raindrops it would take to equal the size of the Great Pyramid! AMAZING APP! GREAT USER FRIENDLY INTERFACE!


HaugenHaus ,

Great App! But, I’d love a widget

I love this app, it is far better than anything else out there. Yet, I would love to have a home screen widget for quick access, as well as defined currency conversions.

ajklai89 ,

Good app, bad UI.

I had this app a couple years ago and it was great. Easy to navigate and very useful. Just redownloaded it and the new user interface is atrocious. Everything is %100 harder to use. It’s confusing and annoying. The calculations are correct and it can still be useful, I just wish it was more user friendly.

App Privacy

The developer, Efecto Pty Ltd, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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