Add or subtract years, months, weeks, days, or business days from a date.
Change the inputs that matter to your decision. Optional assumptions stay collapsed until you need them.
Combine years, months, weeks, and days in one shift.
Aug 8, 2026 shifted forward to Aug 15, 2026.
Use the URL to share the exact date shift.
Business-day mode applies only to the Days field.
Month and year shifts clamp to the last valid day of the target month.
Practical notes about the inputs, assumptions, and result.
The result clamps to the last valid day of the target month, so adding one month to January 31 produces February 28 or 29.
Other tools in date & time.
Find the exact calendar and total-day difference between two dates.
Calculate elapsed time or add hours, minutes, and seconds across midnight.
Track up to two shifts per day, unpaid breaks, weekly totals, and overtime in a printable summary.