Days Between Dates Calculator

How to use the Days Between Dates calculator

This tool helps you count the number of days between two calendar dates. Simply:

1. Select the Start Date.
2. Select the End Date.
3. Check the Include end date box if you want the calculation to be inclusive (often used for inclusive contracts or itineraries).
4. Click Calculate to see the result.

How to calculate days between dates manually?

To calculate the days between two dates manually:

1. Subtract the start year from the end year to get full years.
2. Calculate the number of full months in the remaining time.
3. Calculate the remaining days.
4. Sum these up, accounting for leap years (where February has 29 days).

For example, to find the days between September 5th, 1970 and June 5th, 2022:

• 1970 to 2021 is 51 full years. (51 × 365) + 13 leap days = 18,628 days approx.
• Add the days from September 2021 to June 2022.
• Total sums to the exact day count.

FAQs

How do I include the last day in the count?

By default, "days between" typically measures the duration between two points in time (Start at 0, End at X). If you want to count the days including both the start and end date (e.g., "From Monday to Wednesday inclusive" is 3 days), check the Include end date option.

How many days are between July 4th and July 26th?

Excluding the end date: 26 - 4 = 22 days.
Including the end date: (26 - 4) + 1 = 23 days.