Date Calculator
Add or subtract days, weeks, months and years from any date. Find how many days until any future date. Quick preset buttons included.
How to use
Add or subtract time
Enter a start date, choose an amount and unit, then click Add or Subtract. Get the resulting date instantly. Works with days, weeks, months, years or business days (weekdays only). Useful for deadlines, notice periods and scheduling.
Working days
The "Working days" tab counts only weekdays between two dates, excluding weekends. The "Business days" unit in Add/Subtract also skips weekends. Useful for calculating delivery times, project timelines and legal notice periods.
Frequently asked questions
Is the Date Calculator free to use?
Yes, the Date Calculator is completely free. There is no sign-up, no account required, and no limit on how often you can use it.
Does the Date Calculator use my time zone?
Yes, the Date Calculator uses your device's local time zone by default. You can also work with dates explicitly without time zone effects where applicable.
What devices does the Date Calculator work on?
The Date Calculator works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.