Date & Time Calculator
Add or subtract years, months, weeks, days, hours, minutes and seconds from any date and time, and see the exact resulting moment.
About Date & Time Calculator
Enter a starting date and time, choose add or subtract, then fill in any combination of years, months, weeks, days, hours, minutes and seconds. The result shows the exact resulting moment with its weekday, along with the total shift in days and hours.
Calendar units are applied the way people expect: years and months move the calendar first (so 31 January plus one month lands on 28 or 29 February, clamped to the end of the shorter month), and only then are the exact time units added. Useful for deadlines, contract terms, medication schedules, incubation periods, project planning and shipping estimates. For the gap between two moments instead, use the date difference calculators.