Date Difference Calculator

Days between dates, or add days

Two questions come up constantly and both are easy to get wrong by one: how long is it between two dates, and what date falls a certain number of days from now. The first depends on whether you count the end date, which is why a contract term and a holiday booking give different answers for the same pair of dates. This calculator does both directions, gives working days as well as calendar days, and lets you choose whether the end date counts.

How to count the days between two dates

1. 1

   Pick what you need

   Switch between counting between two dates and adding or subtracting from one date.

2. 2

   Enter your dates

   Choose a start and end date, or a starting date and an amount to shift it by.

3. 3

   Choose whether the end date counts

   Tick inclusive to count both endpoints, which is what contracts, notice periods, and leave policies usually mean.