Date Calculator
Date Calculator
Days between two dates
Enter two valid dates.
Date plus or minus days
Enter a date and number of days.
Two related calculations on dates: count the days between two dates, or work out a future / past date by adding or subtracting a number of days from a base date. Both run in your browser and update as you type.
- Days between — pick a From and a To date and the difference appears below in days, with a weeks-and-days breakdown for longer spans.
- Future or past — pick a start date, a number of days, and a direction; the resulting date is shown in full long form (with weekday) and as an ISO date.
- UTC-anchored — calculations use UTC midnight to avoid daylight-saving and timezone surprises.
- Negative spans — if your To is before your From, the day count still shows correctly with a small note.