Add to or subtract from a date
Start from any date and move by days, weeks, months, or years. Useful for deadlines ("90 days from signing"), notice periods, and return windows.
Direction
Unit
Pick a start date and an amount.
How month math is handled
Days and weeks are exact. Months and years move the calendar month and clamp to real month ends: January 31 plus one month lands on the last day of February (the 28th, or the 29th in a leap year), matching how contracts and billing cycles usually read.