Date Calculator: Day Counter

Date Calculator answers two everyday questions fast: how many days are there between two dates, and what date is it after adding or subtracting a period? DAYS BETWEEN TWO DATES • Pick a start and an end date and see the gap as days, weeks, months and years • An exact "2 years 6 months 23 days" breakdown, not rough 30-day months • Workdays (Mon–Fri) and weekend days counted for you • Optional "count the end day too" for inclusive counting • Hours, minutes and seconds, plus one-tap swap and Today shortcuts ADD OR SUBTRACT TIME • Add or subtract years, months, weeks and days from any date • Results update live as you type, with the weekday, the day of the year and how far away it is • Presets for 1 week, 30 days, 90 days, 100 days, 6 months and 1 year • Workdays mode skips weekends, handy for deadlines, delivery times and notice periods (public holidays are not excluded) • Month ends are handled properly: 29 Feb + 1 year = 28 Feb, 31 Jan + 1 month = 28 Feb Clean native design, dark mode, English and Simplified Chinese, iPhone and iPad. Share any result with one tap. The app is free with ads.