11 free calculators in this category.
Add or subtract days from a date, or find the number of days between two dates — one flexi…
Find the exact number of days between two calendar dates — for deadlines, anniversaries, o…
Add any number of days to a starting date to find the resulting calendar date — useful for…
Subtract a number of days from a date to find what date it was in the past.…
Calculate the number of full weeks (and leftover days) between two dates.…
Calculate the number of full months (and leftover days) between two dates.…
Count the number of business days (Monday–Friday) between two dates, excluding weekends.…
Calculate the number of working days between two dates or from a start date forward — the …
Enter a date of birth to calculate exact age in years, months, and days — plus a countdown…
Set a target date and time and watch a live countdown in days, hours, minutes, and seconds…
Calculate the precise difference between two date-and-time combinations, down to the minut…
Date, day, and time in one glance — no phone required.