Date Difference Calculator: Days, Weeks and Weekdays Between Dates
Find how many years, months, days, weeks and weekdays are between two dates, or add and subtract time from a date.
Pick two dates to see the gap in years, months and days, plus the total in days, weeks and hours and the number of weekdays. The second part adds or subtracts days, weeks, months or years from a date and tells you the weekday.
Add or subtract time from a date
What it does
- Shows the gap as years, months and days, and as total days, weeks and hours.
- Counts weekdays (Monday to Friday) and weekend days.
- Option to count the end date too, as many forms and contracts do.
- Adds or subtracts days, weeks, months or years and shows the weekday of the result.
- Handles leap years and month ends: January 31 plus one month gives the last day of February.
Frequently asked questions
- How are months counted?
- Whole calendar months are counted first, then the days left over. January 31 to March 1 is 1 month and 1 day, since February has no 31st.
- Should I count the end date?
- Count it when both days belong to the period, for example a hotel stay counted in days. Leave it off for the plain difference between two dates.
- Are public holidays removed from the weekday count?
- No. Holidays differ by country and year, so the count only leaves out Saturdays and Sundays.
- Does it use my time zone?
- No. Dates are treated as whole calendar days, so daylight saving changes do not affect the result.
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