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Our mission is to make the perfect calculator.
All-In-One Calculator is a simple, clean and easy to use calculator with a complete set of tools for day to day life, such as a unit converter, currency converter, percentage calculator and more.
From simple or complex calculations, to unit and currency conversions, percentages, proportions, areas, volumes, etc... it does it all. And it does it good!
Simple Calculator
Scientific Calculator
Function Graph
4.7
Star Rating
7.5
Million Downloads
110000
User Reviews

What People Say?

Love this app! It deserves to be at the top of the search. Slick UI, lovely design and features you never thought you need until you realise you do. 5 Stars. Wonderful. 👏 🎉

★★★★★ — Xavier Kolan

Sold! Great, the floating calculator widget is perfect! Love it. Calculator itself has soo many options, personally don't use them, I just needed the normal simple calculator, and it floats over other apps. Perfect!

★★★★★ — Chris Trummer

Best calculator app for most calculations. Has everything you need really unless you are doing PhD in combined mathematics and biochemistry then maybe you might need a more complex calculator but for most calculations it's all you need.

★★★★★ — Alvin Mugambi

Amazing app for a calculation nerd like me. I mostly use it for percentages and currencies and it makes these tasks a breeze. Totally worth full purchase price to go ad free and support the developers. A++ 11/10.

★★★★★ — Thomas Cullen

In a world of oversimplified and useless apps, this one has every tool you can ever need. Been using this app for a few years now. And it's fantastic. It's a calculator complete with more advanced functions, conversion tools, and so much more. It's fantastic. Please don't change it in any way to remove any of it's functions or usefulness.

★★★★★ — Devin

Features

Algebra

Algebra

Solve linear, quadratic or equation systems. Calculate percentages, proportions and ratios. Find out means. Convert decimals to fractions. Check prime numbers.
Geometry

Geometry

Calculate required dimensions for all the common 2D shapes and 3D bodies using known variables. Solve the right triangle. Get step by step solutions.
Unit Converters

Unit Converters

Easily convert between all the common units on the same screen. Convert shoe and ring sizes, roman numerals or numeric bases.
Finance

Finance

Convert up to +160 currencies, even offline. Calculate sales tax and unit price. Find out the tip for a bill. Calculate loan and interest.
Health

Health

Calculate your body mass index. Calculate how much calories you are burning in a day. Find out your body fat percentage.
Miscellaneous

Miscellaneous

Find out the distance in time between two dates. Find out how old you are in years, months and days. Calculate your car's mileage. Solve Ohm's law.
Quadratic Equation
Cube
Temperature

What makes it stand out?

Google Sign-In

Google Sign-In

Sign in with your Google account and keep your settings in the cloud.
Material Design

Material Design

Updated to the latest design language. Material You coming up later this year.
Floating Calculator

Floating Calculator

Calculate over other apps easily with the floating calculator widget.
Calculator Widget

Calculator Widget

Black on white or white on black calculator widget for your home screen.
Solutions

Solutions

Get step-by-step solutions and see formulas for each calculation.
Shortcuts

Shortcuts

Create shortcuts for the most used calculators on your home screen.
Extras

All-In-One Calculator

Contact

Call Us
+40 744 212 246
Address
Nicolae Margineanu 22B
Cluj Napoca, Romania
Email
contact@allinonecalculator.com
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