RealCalc Scientific Calculator

190K reviews
Content rating
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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.
Updated on
Oct 23, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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190K reviews
Daniel McLean
August 26, 2022
I have used this app for many many years. This app is very close to what I would consider not only an ideal calculator but an ideal app. It just works. No bugs. It works every time. It is simple and clear. It works well as a pop up. It works well on my phone and my tablet. It is well laid out, flexible, and comprehensive. Would I love graphing and programming yes, but not at the expense of a clear, stable, well functioning calculator. Just Great!!
11 people found this review helpful
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A Google user
October 6, 2018
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.
64 people found this review helpful
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Gus Hubbard
December 29, 2022
This is my favourite calculator. The conversion feature allowing changing units of measurement is wonderful and doesn't exist on any of the 'scientific' calculators I have. The stack memory is great and allows changing the calculator to RPN (reverse Polish notation) for those with a mathematical bent.
2 people found this review helpful
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What's new

* Updated for Android 13.
* Constants updated to latest NIST values.
* Added redo-last-conversion feature (RealCalc Plus only).
* Added option to include labels in clipboard copy.
* Added ability to resize and reposition layout on devices with large screens or unusual aspect ratios: go to Menu > Resize (RealCalc Plus only).
* Fixed some UI issues and crashes.
* Added monochrome app icon for themed icon support.