Time Calculator: Add & Subtract Date and Time

Calculate Your New Date and Time

Utilize our free Time Calculator to effortlessly add or subtract durations from any given date and time. Whether you need to adjust project deadlines, calculate event schedules, or simply determine a future or past date, this tool provides accurate results for years, months, days, hours, minutes, and seconds.

Formula:

Time Calculation Formula

The Time Calculator determines a new date and time based on a starting point and a specified duration. The general formula is:

Start Date/Time ± Duration = Resulting Date/Time

  • Start Date/Time: Your initial date and time (e.g., 2023-10-26 10:30:00).
  • Duration: The amount of time to add or subtract, specified in years (Y), months (M), days (D), hours (H), minutes (I), and seconds (S).
  • ±: Represents the chosen operation (addition or subtraction of the duration).
  • Resulting Date/Time: The calculated date and time after applying the operation.

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