All online calculators

  • Golden ratio

    This calculator determines proportions according to golden ratio

  • Gregorian calendar. Julian calendar. The calendar eras.

    The calculator convers julian calendar date to gregorian calendar date taking in account the calendar era.

  • 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

Humidification loads

This online calculator answers question "how to choose" humidifier, by calculating humidification requirements given initial and target relative humidity and building parameters

Humidification requirementsCreative Commons Attribution/Share-Alike License 3.0 (Unported)
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Ideal weight calculator using Paul Broca formula

Ideal weight calculator using Paul Broca formula

Ideal weight calculator using Paul Broca formulaCreative Commons Attribution/Share-Alike License 3.0 (Unported)

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