Magic Number

The most intuitive calculator.

The most intuitive calculator

See better

See your calculations clearly.
See the math in true beauty.
See no distractions.

Work faster

Enter naturally as you would
in math. Edit without friction.
Nothing gets in your way.

Enjoy math

Do everyday math with ease.
Tackle hard problems in style.
Feel the empowerment.

Icon: Eye

See better

Icon: Write

Work faster

Input: Part 1

Enter naturally

Input Entering

Go faster
with the clever

Input: Part 2

Edit effortlessly

You can click.


Input Clicking

Or use

Input Selecting

You can also:


Tab to a number

Forget the shortcuts

Icon: Equal

Enjoy math

Or enjoy doing it less.

Arithmetic + Fractions


Percentage + Time


Solving problems

Basic EquationFraction Equation
Percentage EquationTime Equation
Equation with powerEquation with root
Linear EquationEquation: Law of sines

Superior trigonometry

Radians as Fraction of πTrig Reciprocal
Trig SquareAngle in degrees, minutes, seconds

Complex numbers

Complex 1Complex 2

Engineering formats

Format: EngineeringFormat: SI Prefix

Precision + Extreme

Pi in 25 digitsHuge Number

Icon: Gear

Do more

In a simpler way.

Icon: Function


Over 100.
For age 5 to 105.

  • Arithmetic (6)

    +, –, ×, ÷,
    modulo, quotient

  • Rounding (6)

    round, truncate,
    floor, ceiling,
    integer, fractional part

  • Percentage & Tax (12)

    % change, as % of

    common operations:
    a + b%, a – b%, a × b%

    a inc – b%, a inc × b%

    a + b%^c, a – b%^c,
    a × b%^c

    compound inclusive:
    a inc – b%^c, a inc × b%^c

    More info

  • Roots & Exponents (10)

    √, n√,
    x–1, x2, x3, xY, x1/Y,
    ex, 2x, 10x

  • Logarithm (3)

    loge, log10, log2

  • Angle & Geometry (5)

    convert to radians,
    convert to degrees,
    convert to d° m′ s″,
    hypotenuse, adjacent

  • Trigonometric (12)

    sin, cos, tan,
    sin–1, cos–1, tan–1,
    csc, sec, cot,
    csc–1, sec–1, cot–1

  • Hyperbolic (12)

    sinh, cosh, tanh,
    sinh–1, cosh–1, tanh–1
    csch, sech, coth,
    csch–1, sech–1, coth–1

  • Complex Numbers (6)

    real part, imaginary part,
    argument, absolute value
    conjugate, polar

  • Combinatorics (3)

    Factorial, combinations, permutations

  • Statistical (10)

    sum, count, average, maximum, minimum, median, mode, standard deviation, variance, coefficient of variation

  • Comparison (5)

    max – min,
    max ÷ min, min ÷ max,
    max ∆% min,
    min ∆% max

  • Linear Regression (8)

    Slope, forecast x, forecast y
    x-intercept, y-intercept
    correlation coefficient,
    coefficient of determination,
    standard error of estimate

  • Matrix (4)

    Determinant, inverse, Gaussian elimination, Gauss-Jordan elimination

  • Bitwise Operators (5)

    and, or, exclusive or, nor, not


  • Numeral bases (4)

    Decimal, binary, octal, hexadecimal

  • Numeric formats (6)

    Default decimal,
    fixed decimal places,
    scientific notation,
    engineering notation,
    SI prefix, fraction

  • 25 digits precision
  • 50+ scientific constants
  • 10 variable-like memories
  • 4 customizable tax rates
  • 2 ways to assign them:

    m = 42  or  42 = m

  • Everything is auto saved
  • History’s items are reusable
  • Option to auto copy result
  • Export expression as PDF

Magic Number Icon

For Mac.
OS X 10.7 or later.

English, Deutsch,
Español, Français, Italiano.

See the latest improvements.

Tweet us if you have any questions.

For quick answers, here is the online help.

Available on the Mac App Store

Featured by Apple:
‘Best New Apps’ in January 2014
‘Back to School’ promotion in September 2014

5-star rating

Average App Store
rating across the world.