DATE & TIME TOOL
Date Calculator
Find the number of days between two dates, or add and subtract days from a date. Free, with no sign-up or download.
Choose your dates and calculate to see the result here.
Choose “Days Between Dates” to find the calendar-day difference between two dates. Use “Add Days” or “Subtract Days” to calculate a new date. This tool works with calendar dates, so times of day and time zones do not affect the result.
How to use the date calculator
Does the date difference include the start or end date?
By default, the calculator returns the number of full days between the dates, excluding the start date. Turn on “Include the end date” to add one day to the result.
Do leap years or daylight saving time affect the result?
Leap years are handled using the calendar. The calculator uses dates rather than times of day, so daylight saving time does not change the day count.