Date Subtraction Calculator
Find the date that was a number of days, weeks, months or years before a given date.
—Result date
—Day of the week
—From today
—ISO date
—Week number
—Calendar days between
● Everything is calculated in your browser. Nothing is sent anywhere.
How it works
Years and months are subtracted first, then weeks and days. If the day doesn't exist in the target month, the last day of that month is used (31 March − 1 month = 28 or 29 February). Useful to count back from a deadline, a due date or an event.