Date Calculator
Date Calculator — free online tool. Quick and easy to use.
Date Calculator — Add or Subtract Days
Find what date falls a certain number of days from any starting date. Perfect for project planning, deadline calculation, and scheduling.
How It Works
Enter a starting date and the number of days to add (positive) or subtract (negative). The calculator accounts for varying month lengths and leap years to give you the exact resulting date.
Common Use Cases
- Project Planning: What date is 90 business days from today?
- Legal Deadlines: When is 30 calendar days from a notice date?
- Return Policies: What is the last day to return an item?
- Pregnancy Tracking: Calculate due dates and trimesters
- Event Planning: Determine setup dates before an event
How to Use
- Select a starting date from the calendar picker
- Enter the number of days to add or subtract (use negative for subtraction)
- Click Calculate to see the result date
Examples: 90 days from today gives your date 3 months ahead. -30 days shows the date one month ago.