Tool to compute interval difference between two dates. Calculation of the number of days between two dates in order to estimate the length of a period.

Difference between 2 Dates - dCode

Tag(s) : Date and Time

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Enter the 2 dates (year, month, day) and the dCode calculator will compure the number of days automatically. Calculation is made with the exact number of days **between two dates**, without counting the day itself.

__Example:__ A child born on the 2000-01-01, is 2 days old on the 2000-01-02 but the calculator will state that there is only 1 day between 1st January and 2nd January.

Algorithmically, dCode associates a date with a numeric value (such as the number of days since January 1st of year 1) and then performs a subtraction between the two date values.

Calculation takes into account the Gregorian Calendar and the Julian one before 1582.

Depending on the way of thinking, there are multiple answers

__Example:__ Between Tuesday and Wednesday, how many days are there?

Answer 0 : Between the day of Tuesday and the days of Wednesday there are zero day.

Answer 1 : From Tuesday to Wednesday, it takes one day (This is dCode answer).

Answer 2 : A journey beginning Tuesday and finishing Wednesday is 2 days long.

To get an answer in mode 0 or 2, add 1 or remove 1 to the value given by dCode.

Calculate the difference from the date of birth until today.

`Datediff()` is the name of the function that allows to do date difference calculations in most programming languages.

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Source : https://www.dcode.fr/date-difference

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