This site provides an online date calculator to help you find the difference in the number of days between any two calendar dates. Simply enter the start and end date to calculate the duration of any event. You can also use this tool to determine how many days have passed since your birthday, or measure the amount of time until your baby's due date. The calculations use the Gregorian calendar, which was created in 1582 and later adopted in 1752 by Britain and the eastern part of what is now the United States. For best results, use dates after 1752 or verify any data if you are doing genealogy research. Historical calendars have many variations, including the ancient Roman calendar and the Julian calendar. Leap years are used to match the calendar year with the astronomical year.

Note: If you're trying to figure out the date that occurs in X days from today, switch to the Days From Now calculator instead. Or to calculate the date that is X days from a particular date, use the Days From Date calculator. Finally, if you want to choose a day in the week and count how many times it occurs in a given year, try out the How Many Days calculator.


›› Enter dates

Enter two dates below to find the number of days between them. For best results, avoid entering years before 1753. Examples include 2029-06-08 or Aug 4, 2007. You can also type words like today or yesterday, or use the American format, 10/21/2014.

Number of days between:
and  

I'm feeling lucky, show me a random date difference.


›› October, 2014 calendar

Su M Tu W Th F Sa
    1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31  

Today is Tuesday, October 21st, 2014. It is the 294th day of the year, and in the 43rd week of the year (assuming each week starts on a Sunday). There are 31 days in this month. 2014 is not a leap year, so there are 365 days in this year.


›› Date calculator

number of days in 2014
number of days in 2013
number of days in 2015
number of days in 1918
number of days in January
number of days in February
number of days in March
number of days in April
number of days in May
number of days in June
number of days in July
number of days in August
number of days in September
number of days in October
number of days in November
number of days in December
number of days between April 15th, 1979 and October 21st, 2014
number of days between October 21st, 2014 and December 13th, 2020
number of days between December 22nd, 1914 and March 5th, 2001
number of days between April 13th, 1923 and September 15th, 1944
number of days between December 29th, 1927 and April 28th, 1940
number of days between April 28th, 1905 and March 15th, 1906
number of days between March 7th, 1919 and September 11th, 1924
number of days between September 9th, 1906 and March 8th, 1912
number of days between May 12th, 1922 and September 24th, 1977
number of days between August 13th, 1928 and May 19th, 1946
number of days between March 23rd, 1910 and July 28th, 1948
number of days between October 2nd, 1970 and August 16th, 1977
number of days between April 12th, 1911 and April 19th, 1973
number of days between November 14th, 1919 and November 24th, 1925
number of days between October 23rd, 1912 and November 16th, 1913
number of days between June 28th, 1982 and March 11th, 1995
number of days between June 10th, 1903 and December 21st, 1905
number of days between March 12th, 1915 and May 30th, 1919
number of days between February 25th, 1932 and March 22nd, 1970
number of days between May 29th, 1929 and December 30th, 1936
number of days between September 17th, 1906 and June 9th, 1918
number of days between August 11th, 1924 and July 30th, 1980

This page was loaded in 0.0025 seconds.