Add Days, Months, or Years to a Date Online
Runs 100% in your browser — your files never leave your device.
Deadlines shift, subscriptions roll over, schedules slip — and "one month from January 31" is exactly where naive math breaks. Add (or subtract) any mix of years, months, days, hours, and minutes, and get the precise resulting date. Month arithmetic clamps to real month ends: January 31 plus one month is February 28, or 29 in leap years.
How it works
- 1
Pick the starting date
Use the date-time picker — the time of day is carried through the math.
- 2
Enter the amounts to add
Years, months, days, hours, minutes — negative values subtract.
- 3
Read the resulting date
The exact date is shown in full, formatted for your locale.
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