Add or subtract days
Calculates a date in the future or past, such as “today plus 30 days” for payment terms or “minus 3 months” for a deadline.
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How it works
- Pick a starting date.
- Choose add or subtract, then enter the amount and unit.
- Click “Calculate” – the result appears with its weekday.
Notes and limitations
- Months are capped at the end of the month: 31 January plus 1 month gives 28 or 29 February.
- Weekdays skip Saturdays and Sundays, but not public holidays.
- Legally binding deadlines can follow their own rules – check with a professional if in doubt.