Unitto — calculator, converter

Sad Ellie

About this app

Calculator, converter and more.

Look for Calculator on your home screen after installing the app.

• Deep customization: themes, number formatter and etc.
• No ads, in-app purchases or asking for donations
• Open source

Calculator
• Home screen widget
• Copy, paste, save and share expression results
• Trigonometric functions
• Fractional output

Unit converter
• 590 units
• Home screen widget
• Built-in currency converter
• Favorite units
• Organize unit groups
• Smart search algorithm

Date calculator
• Add and subtract dates
• Calculate difference
• Create events in calendar

Time converter
• Add to favorites
• Add labels to time zones

Permissions
INTERNET ("full network access")
Used in Unit Converter to update currency rates. Requests are made only when you select a currency unit.

ACCESS_NETWORK_STATE ("view network connections")
Used in Unit Converter as a callback. Retries to update currency rates if there was an error (no network, for example) and the Internet connection is back.

WAKE_LOCK ("prevent device from sleeping")
Not used explicitly in code. Added automatically by Widget feature.

android.permission.RECEIVE_BOOT_COMPLETED ("run at startup")
Not used explicitly in code. Added automatically by Widget feature.

android.permission.FOREGROUND_SERVICE ("run foreground service")
Not used explicitly in code. Added automatically by Widget feature.

You can always check the source code and build the app yourself: https://github.com/sadellie/unitto

Ratings and reviews

Best calculator and unit converter I've ever seen! And Free with No ads! I love that you can bookmark the units you use most often. Other converters present a list of units, and I don't need 99% of them. But Unitto lets me select the ones I use regularly. Plus it does currencies! Admittedly, it only updates the currencies daily, but that's acceptably accurate for the normal traveler who isn't try to trade FX. Oh, and it even does date difference calculations. Basically it's 4 great apps in 1!

This is my favorite "regular" calculator app I've tried. it's simple enough to function as a four-function calculator, yet trigonometry and algebra are only a click away. As for the main reason this app exists, unit conversion, this so is the BEST! It has pretty much every type of unit I might want to convert. At first glance, that could be daunting, but you can choose your favorites and turn off the ones you don't want.

Others have said it already. Great simple calculator/converter, plain simple interface (not cluttered like some), able to 'favorite' conversions - worthy of 5*,so why only 4* ? Well there's 1 conversion I'd like to see added. Under [Mass] -'Stones (UK)'.Sure there are other conversions people would like added so how about a way to ADD custom conversions.maybe import JSON file with info like.. 'Group,Unitfrom,UnitTo,Calculation' eg 'Mass,Stone(UK),Pounds,*14' & 'Mass,Pounds,Stone(UK),/14'

What’s new

- Added Are - Unit of area
- Added Stone (UK) - Unit of mass