SpeQ is a mathematics program where you can enter your calculations in a sheet. It's useful for making simple as well as advanced mathematical calculations, and is designed to be very easy to use. SpeQ is a small program that runs on any Windows computer.

The interface of SpeQ resembles a colored notepad editor. Simply enter an expression in the Workarea and press <ENTER> to calculate the answer. Another expression can be entered on the next line, and you can freely edit all text in the Workarea. You can save your sheets for later re-use and modification.

If you're new to SpeQ, it's recommend to read the page Getting started to find out what you can do with the program.


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SpeQ has the following features.
  • Enter mathematical expressions in a sheet
  • Operators:
    • Arithmetic: + - * / % ^ ² ³
    • Conditional: =, <>, <, >, <=, >=
    • Logical: And, Or, Xor
    • Bitwise: &, |, ||
  • Constants. Around 100 built-in constants on the area of
    • Mathematics: General, Number Theory, Chaos Theory, Combinatorics, Analysis
    • Physics: Universal, Electromagnetic, Atomic and Nuclear, Physico-Chemical
    • Conditions
    • Colors
  • Functions:
    • Analysis: fnInt, fnDiff, fnSolve
    • Arithmetic: Abs, Exp, Ln, Log, Log10, Sqrt, Sign
    • Complex numbers: Re, Im, Abs, Arg, Conj
    • Conversion: Rad2Deg, Rad2Grad, Rad2Cycle, Deg2Rad, Grad2Rad, Cycle2Rad
    • Hyperbolic: Cosh, Sinh, Tanh, ACosh, ASinh, ATanh, Sech, Csch, Coth
    • Integers: Round, Floor, Ceil, Fix
    • Logical: IIf, Not, Repeat, Iterate
    • Probability: Factorial, nCr, nPr, !, Rand, RandInt
    • Statistics: Avg, Min, Mean, Max, Prod, Sum, Std, Sort, Var
    • Representation: Bin, Dec, Fraction, Hex, Oct
    • Trigonometry: Cos, Sin, Tan, ACos, ASin, ATan, Atan2, Sec, Csc, Cot
    • Units: In, Convert, AddUnit
  • Plot graphs
    • User-friendly trace, move and zoom functionality
    • Analyze intersections, minima and maxima
    • Adjust all figure properties in the Propertywindow or in the Workarea
    • Available functions: Plot, PlotLogX, PlotLogY, PlotLogLog, RGB, Close, CloseAll
  • Units. Around 130 built-in units on the area of
    • Angles
    • Mechanics: time, mass, length, area, volume
    • Electricity
    • Temperature
    • Molecular
    • Light intensity
    • Radioactivity
    • Digital computing
  • System functions and variables: Angles, Bytes, Decimals, SciNotation, Representation, Clear, ClearAll
  • Define your own variables for use in calculations
  • Define your own functions, using one or more variables
  • Define your own units
  • Decimal, binary, hexadecimal and octal representation
  • Calculations with lists
  • Complex number calculations
  • Colored workarea
  • Save and load sheets
  • Orderly overview of all available functions and constants in the Functionstree
  • A list with all defined variables and functions in the Memorylist
  • Context-sensitive help and a detailed users guide
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System Requirements

SpeQ has very low system requirements. It runs on practically every computer.
  • Microsoft Windows 95, 98, ME, 2000, NT, XP or Vista
  • Pentium 133 mHz or better processor
  • 32 MB of RAM
  • 1 MB free disk space
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