Date & Days Calculators
These date and days calculators answer the two everyday questions about the calendar: how far apart are two dates, and what date lands a set number of days from another. Between them they cover counting, adding, and subtracting days without any manual calendar-flipping.
The Days Between Dates calculator is the anchor — pick a start and end date and it returns the exact day count, with inclusive and exclusive options and a weeks-and-days breakdown. To project forwards or backwards instead, Add Days to Date and Subtract Days from Date shift any date by the number of days you enter. Common intervals have their own ready-made pages too, like 30 Days From Today and 90 Days From Today, which are handy for deadlines and return windows.
If your count needs to skip weekends, the Weekend Calculator totals the Saturdays and Sundays in a range, and the working-days tools take it further. All of the arithmetic runs in UTC so whole-day counts stay stable across time zones and daylight-saving changes.
New to date maths? The guide on how to count days between dates explains inclusive versus exclusive counting and the edge cases that trip people up.