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  • Hill cipher

    This calculator uses Hill cipher to encrypt/decrypt a block of text

  • Hip roof calculator

    This calculator will help you estimate hip roof parameters, including rafters and roof area

  • Histogram

    Histogram generation according to input data. The number of groups is determined by the Sturgess formula, other formulas or set manually

  • Histogram group number

    Sturges formula and other methods of determining the number of groups in histogram generation

Huffman coding

This online calculator generates Huffman encoding for given frequency of occurrence of symbols.


Huffman coding

Symbols probability table

Items per page:

Hyperbolic functions

Calculation of hyperbolic functions


Hyperbolic Functions

Digits after the decimal point: 2
  • Liquid level in the tilted cylinder

    Сalculates the level of the liquid in a tilted cylindrical tank with the tank parameters and the liquid volume.

  • LL1 grammar analysis. Yet another top-down parser generator.

    The calculator checks LL1 grammar correctness, parses a text using the grammar, shows FIRST, FOLLOW and FIRST PLUS sets, parsing tree and gives PLANETCALC parsing code.

  • Loan payment example
  • Log-normal distribution

    It calculates the probability density function (PDF) and cumulative distribution function (CDF) of long-normal distribution by a given mean and variance.

  • Math equation simplification

    Simplifies math equation with single variable (x). In eqation you may also use integer and fractional numerical constants arithmetic operations, trigonometric and hyperbolic functions.

  • Math operations on degrees

    This online calculator supports simple mathematical operations, addition/subtraction/multiplication/division, on degrees

  • Mathematical calculator

    Mathematical calculator is used for evaluation math expressions with arithmetic operations (+-/*^) and functions: sqrt - square root, exp - exponential function, lb - binary logarithm, lg - decimal logarithm, ln - natural logarithm, sin - sine, cos - cosine, tan - tangent, cot - cotangent, sec - secant, csc - cosecant, arcsin - arcsine, arccos - arccosine, arctan - arctangent, arccot - arccotangent, arcsec - arcsecant, arccosec - arccosecant and others

  • Median of a triangle

    This online calculator computes median of a triange given triangle sides