Date difference in months

Isabelle Viktoria Maciohsek · JavaScript, Date · Oct 19, 2020

Calculates the difference (in months) between two dates.

  • Use Date.prototype.getFullYear() and Date.prototype.getMonth() to calculate the difference (in months) between two Date objects.
const getMonthsDiffBetweenDates = (dateInitial, dateFinal) =>
  Math.max(
    (dateFinal.getFullYear() - dateInitial.getFullYear()) * 12 +
      dateFinal.getMonth() -
      dateInitial.getMonth(),
    0
  );
getMonthsDiffBetweenDates(new Date('2017-12-13'), new Date('2018-04-29')); // 4

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