📅 Date & Time
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.
The Date Calculator is a free online tool that helps you add or subtract days, weeks, months and years from any date. find how many days until any future date. quick preset buttons included It runs in your browser with no sign-up, downloads, or installation needed. All processing happens locally — your data stays on your device.
Date Calculator
How to use
1
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.
2
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.