Add or subtract time from any date and get the exact result with the day of the week
This date calculator lets you add or subtract years, months, weeks, and days from any starting date. It's useful for planning project timelines, calculating warranty or expiration dates, determining anniversaries, or figuring out when a future event will occur.
Choose a start date, select Add or Subtract, then enter the amount of time in years, months, weeks, and/or days. Click Calculate to see the resulting date and its day of the week. The tool also shows what date it will be a specified number of days from today.
When adding months, if the resulting month has fewer days than the start date's day, the calculator rolls back to the last valid day of that month. For example, adding 1 month to January 31 gives February 28 (or 29 in a leap year).
Yes, but note that this calculator does not exclude weekends or holidays. For net business days, you would need a separate business day calculator. This tool gives you the raw calendar date result.