Date Calculator
Add or subtract days from today, find the number of days between two dates, or check the day of the week for any date.
Days from today
Days between two dates
Day of the week
Three date calculators in one
Figure out what date it'll be in 30, 60, or 90 days, how many days remain until an event, how many days sit between two specific dates, or which day of the week a date falls on (handy for historical dates or dates far in the future). All three calculators run locally in your browser.
How do I find out what date is 30 days from today?
Use the "Days from today" calculator above, leave it on "Days after today", enter 30, and press Calculate.
Does the days-between calculator count inclusively?
It calculates the number of full days separating the two dates (the difference), not an inclusive day count.
Can I check a day of the week far in the past or future?
Yes, the day-of-week calculator works for any date your browser's date picker allows, including historical and future dates.
Calendar days are different from working days
The days-between result is the absolute calendar-day difference, with the same date producing zero. It does not include both endpoints as two days. September 19 to September 20 is one day apart. Weekends and holidays are included; this is not a business-day or deadline calculator.
The days-from-today calculation starts from your device’s local calendar date. A daylight-saving day can contain 23 or 25 hours, so adding one calendar day is not always the same as adding 24 elapsed hours. Use the weekday result when you need a label for one date, and check the applicable rules separately for formal deadlines.