Date Add/Subtract Calculator

Easily add or subtract days, weeks, months, or years to any date.

📅 How It Works

  1. Enter a Start Date: Choose the date from which you want to begin the calculation.
  2. Choose Operation: Select whether to add or subtract from the start date.
  3. Enter Time Units: Input the number of days, weeks, months, or years to change.
  4. Get the resulting date instantly.

✅ Example

Start Date: March 1, 2025
Add: 3 weeks, 2 days
Result: March 24, 2025

🕒 Need to Include Time?

Use our Date & Time Calculator for calculations including hours and minutes.

💡 Tips

  • The tool uses the Gregorian calendar (standard worldwide).
  • Adding months adjusts for month length (e.g., Jan 31 + 1 month = Feb 28 or 29).
  • Subtracted years from leap year dates are adjusted automatically.

❓FAQs

  • Can I subtract days from a future date?
    Yes — just choose "Subtract" and input the number of days.
  • Does it account for leap years?
    Yes, leap years and month length variations are handled automatically.