Add Days Calculator

Calculate Future and Past Dates

Use negative numbers to calculate past dates

How to Use the Add Days Calculator

This calculator helps you determine future or past dates by adding or subtracting days from a starting date. Here's how to use it:

  1. Enter your starting date or use today's date (default)
  2. Input the number of days (use negative numbers for past dates)
  3. Click "Calculate Date" to see the result

Common Uses

  • 📅 Project deadline calculation
  • ⏰ Event planning and scheduling
  • 📊 Business day calculations
  • 🎂 Birthday and anniversary planning