All online calculators

  • Date and number of working days

    Calculator calculates the date of the initial date and the number of working days. Taking into account weekends, holidays and weekend shifts at work days, according to the published decrees of the government of the Russian Federation. Created by user's request.

  • Date by the Julian Day Number

    Displays Gregorian calendar date corresponding to Julian Day Number

  • Date plus days

    This online calculator computes the result of addition/subtraction of the given number of days to the given date.

  • Date to timestamp converter

    This calculator converts date to epoch timestamp in milliseconds, that is, milliseconds since standard epoch of 1/1/1970, as used, for example, in Javascript.

  • Day of week by date

    This online calculator outputs day of week for given date

  • Days between dates. A historical version.

    Calculates number of days between two dates taking in account the date of transition to Gregorian calendar.

Determinant of 3x3 matrices

This calculator calculates the determinant of 3x3 matrices

Determinant of 3x3 matricesCreative Commons Attribution/Share-Alike License 3.0 (Unported)
  • Density of oil

    Recalculation of density of oil for different temperature and pressure values. Formulas are taken from Russia's GOST R 8.610-2004. "State system for ensuring the uniformity of measurements. Density of oil. The tables for recalculation" standard

  • Derivative

    It finds one variable function derivative. Step by step differentiation solution is also provided.

  • Determining air humidity with psychrometric method
  • Dew point

    This calculator determines dew point from given temperature and relative humidity of air

Determinant of a matrix

This online calculator computes determinant of a matrix, using it's definition

Determinant of a matrixCreative Commons Attribution/Share-Alike License 3.0 (Unported)

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