Date Calculator: Add to or Subtract From a Date
Enter a start date and add or subtract any number of days, months, or years.
Help and Example Use
- Duration Between Two Dates – Calculates number of days.
- Time and Date Duration – Calculate duration, with both date and time included
- Birthday Calculator – Find when you are 1 billion seconds old
- Weekday Calculator – What Day is this Date? – Find the weekday for any date
- Week Number Calculator – Find the week number for any date