CalcTastic Calculator

Copyright © 2024
ShayTastic Software

CalcTastic is a feature-rich calculator with years of refinement and exceptional user ratings. CalcTastic includes two fully-independent modes:

  • A high-precision Scientific Calculator with Fractions, Complex Numbers, Physical Constants, a Unit Converter, Advanced Statistics and History & Memory Registers.
  • A full-featured Programmers Calculator with a dedicated Binary Display, support for Signed & Unsigned Integers (from 8-64 bits) as well as separate History & Memory Registers (viewable in binary, octal, decimal or hex).



  • Algebraic Modes with Editable Equations
  • RPN Modes with up to 50 Stack Registers
  • A Basic Mode with all the Essentials
  • Calculation History with 50 Records
  • Memory with 10 Registers
  • 12 High-Quality Themes
  • Copy and Paste
  • Configurable Numeric Display (Decimal and Grouping)
  • Split-Screen Support
  • Easier to use than many other Calculator Apps
  • Quicker than locating your Casio & HP Calculator (11C / 15C)
  • High Internal Precision
  • Rectangular and Polar form Complex Number Support
  • Real, Imaginary, Argument, Magnitude and Conjugate Functions
  • Fractions and Fraction Calculations
  • Convert Decimals to Fractions
  • Degree, Minute, Second Support
  • Standard, Scientific, Engineering and Fixed Decimal Notations
  • Configurable Display Precision from 0 – 12 digits
  • Table of 44 Physical Constants
  • 289 Conversion Units across 18 Categories
  • Trig Functions in Degrees, Radians or Grads
  • Hyperbolic Trig Functions
  • Natural and Base-10 Logarithms
  • Percent and Delta Percentage
  • Remainder, Absolute, Ceiling and Floor Operations
  • Factorial
  • Combinations and Permutations
  • Random Number Generator
  • 15 Single-Variable Statistics
  • Quantity, Min, Max, Range, Sum, Median
  • Arithmetic Mean, Geometric Mean, Mean Squared
  • Sum Squared, Sum of Squares of Variance
  • Sample Variance, Sample Standard Deviation
  • Population Variance, Population Standard Deviation
  • Binary, Octal, Decimal and Hexadecimal
  • History viewable in all Four Bases
  • Convert between Bases
  • Signed and Unsigned Integers (8, 16, 32 and 64-Bit)
  • Cast between Integer Sizes
  • Dedicated Binary-Bit Display (and Toggle) for all 64-Bits
  • Bitwise Logic Operations AND, OR, XOR
  • Bitwise Shift Operations
  • Roll Left and Right
  • Byte and Word Flipping
  • Ones and Twos Complement. Native interpretation is Twos Complement
  • Random Number Generator


ShayTastic Software hereby disclaims all warranties with regards to CalcTastic Calculator (“this software”). This software is provided AS-IS with no warranty of any kind, expressed or implied, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

While every effort has been made to ensure the accuracy of CalcTastic Calculator, ShayTastic Software shall not be held responsible for any errors resulting from its use.