Units is a really useful app that lets you easily convert from various units into lots of others.

NEW: Units now supports doing quick conversions on Apple Watch. Perfect for currency conversions on holiday, or any other calculations you need to do quickly throughout your day.

Units can convert hundreds of units from 43 different categories including Speed, Time, Length, Volume, Area, Power, Temperature, Fuel Consumption, Shoe Sizes and loads more!

Units is now a fully universal app with native support for iPhones, iPod touches and iPads.

As an added bonus, Units also has a built in ruler, for doing small, quick measurements when the need arrises.

• Convert hundreds of units - Units has over 800 units across 43 different categories.
• Convert currency - Units can convert between 88 different currencies, with rates updated daily.
• Hide unused units - Units lets you hide units you don't use, allowing you to maintain a streamline conversion workflow.
• Reorder units & categories - Units Premium allows you to reorder units and currencies however you want them.
• Built in ruler - Units has a built in ruler allowing you to make small, quick measurements without carrying round a ruler.

Units Premium disables adverts and allows you to reorder both units and unit categories to suit your needs.

What's New

Version 2.4.1

Fixed a crash affecting iOS 7 users.

Ratings and Reviews



First of all, I've loved the app for years now, so thank you! But, I'm sure I'm not the only one who would appreciate an update to add support for 3rd party keyboards. When using anything like Swipe, Swiftkey, Gboard, etc. you get a rogue garbled number pad that obstructs almost your entire view :(

Step backwards! Wait until it's fixed

Technologist at heart

As an international traveller I'm in continuous need for unit conversions. Everything from currency to lengths and weights. The original Units app was fantastically simply easy and reliable.


First, the sheer volume of conversions added makes nearly impossible to quickly find and use the basic unit conversions. You have to scroll past 37 categories to reach temperature?!

I purchased the premium version to eliminate enable reordering (and eliminate ads) only to find the app crashes when you try to reorder your second item. How does that make it past quality control?! Just to make sure it wasn't unique to my iPad I tried it on my iPhone - the exact same application failure. Tried rebooting the devices and the exact same app failure continues. Uugh!

Lastly, they should at least reorder the most popular categories to the top (currency, weight, length, time, electrical current) to the top when you purchases the premium version.

Recommend waiting until they fix the crashing issue when trying to reorder. Without reordering the common categories to the top of the list the application is tedious to use.

3rd update fixes Currency!


Many new things, but the currency converter keeps losing how I choose to order the countries that I want. China always is deleted from my list. The save of the countries from the old app seems gone. It is a bother to keep redoing my list of comparisons! Please restore and I will gladly increase my rating!

Update: New version still loses added countries' currencies and the order I change them to. Adding 2 columns is nice, but please fix being able to reorder!

V2.1.1 finally fixes the Currency Converter! Thanks! Raising my rating all the way to five stars.!


Homegrown Software Ltd
2.6 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Homegrown Software


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