onlinecalculator.me

Calculators app

Your calculators,
ready on every device

Mortgage, BMI, tips, percentages, dates, conversions, and more than 175 calculators in one private app. Calculations stay on your device and work offline.

iPhone · iPad · Mac Download on the App Store Android phones · tablets Get it on Google Play

A store page becomes available after that platform finishes reviewing the app.

Inside the app

One answer is never far away

Search once, save the calculators you use, and come back to them without hunting through bookmarks or waiting for a page to load.

Calculators app home screen on iPhone with search, popular calculators, and favorites
iPhone Find the right calculator in seconds
Mortgage calculator on Android showing a monthly payment breakdown and balance chart
Android See the answer and the useful detail
iPhone Home Screen with a Calculators widget containing four favorite calculators
iPhone widgets Keep your favorites one tap away
Calculators app on Mac with calculator categories in a sidebar and a finance calculator grid
Mac The same library, at home on a bigger screen

Why download the app?

Keep the calculators you actually use one tap away

The website is handy for a quick answer. The app earns its place when you calculate more than once: search less, save favorites, and keep working when the connection disappears.

  • More than 175 focused calculators. Finance, health, dates, conversions, construction, and everyday math.
  • Fast, private, and fully offline. Every calculation runs on your device—no signal or sign-up required.
  • Made for all your devices. Use it on iPhone, iPad, Mac, or Android, with 25 built-in languages.