RealCalc Scientific Calculator

Quartic Software

About this app

RealCalc Scientific Calculator is one of Android's most popular scientific calculators. It has over 20 million downloads and more than 100,000 5* reviews.

RealCalc is designed to look and operate exactly like a real hand-held calculator. It has all the standard scientific functions plus history, memories, unit conversions and constants. You can choose from a number of display styles and formats. It also supports binary, octal and hexadecimal calculations and has an optional RPN mode. RealCalc is easy to use, but has full help included in the app.

If you like RealCalc, the pro version RealCalc Plus has lots of extra features including fractions, degrees/minutes/seconds, customizable conversions and constants, landscape mode, a home-screen widget, a 12-digit display and greater internal precision. Purchasing RealCalc Plus will also help to support further development. Just search for RealCalc Plus or follow the upgrade link in the app.

RealCalc Scientific Calculator includes the following features:
* Traditional algebraic or RPN operation
* Unit conversions
* Physical constants table
* Percentages
* Result history
* 10 memories
* Binary, octal, and hexadecimal (can be enabled in Settings)
* Trig functions in degrees, radians or grads
* Scientific, engineering and fixed-point display modes
* 7-segment, dot-matrix or standard font display
* Configurable digit grouping and decimal point
* External keyboard support
* Full built-in help

RealCalc Plus contains all these features, plus:
* Fraction calculations and conversion to/from decimal
* Degrees/minutes/seconds calculations and conversion
* Landscape mode
* Homescreen widget (now with RPN support)
* 12-digit display
* Extended internal precision (32-digit)
* User-customizable unit conversions and constants
* New RPN styles (buffered-entry, XYZT rolling stack)
* Multi-window support with drag & drop.

Ratings and reviews

This is the PERFECT scientific calculator. I was looking for an easy, compact sci calculator that had an RPN mode. RPN is kind of fun and efficient w keystrokes and the stack acts like another set of memories. It also works in algebraic mode just fine if that is your preference. It has every conceivable function you might need as well as excellent binary and hex functions for machine language programmers. I use the unit conversions constantly. I bought the premium version just to support them.

I've had this app on every Android I've owned. Love the simple clear interface, and the remarkable depth of calculation available. Yes, I sometimes use scientific notation in my daily life. Conversions are great. numbers are large & clear and easy for us old folks to read. And, for some of my friends, RPN!

Best calculator I've used and I've tried a few. I was lucky to find this one early and have never wanted it to have a function it doesn't have. I'm a little surprised that I haven't needed a graphing function in that time (several years) but I also have had my trusty, old TI-83 Plus handy and would always rather use that than a phone app (for graphing). Anyway. Never had a problem with this app. Will buy the paid version when I've built up enough Play Store credit.

What’s new

* Updated for Android 14.