📅 Date Calculator
Add or subtract days, weeks, months, or years from any date
📚 How to Use the Date Calculator
Step 1: Choose Start Date
Select any date from the calendar or type it manually. Default is today's date.
Step 2: Select Operation
Choose whether you want to add or subtract time from the start date.
Step 3: Enter Amount
Enter how many days, weeks, months, or years you want to add or subtract.
Step 4: Calculate
Click "Calculate Date" or use quick buttons for common time periods.
📊 Common Date Calculations
Future Dates
- Project deadlines
- Event planning
- Subscription renewals
- Vacation planning
Past Dates
- Age calculation
- Invoice due dates
- Warranty expiration
- Historical dates
📅 Calculation Examples
| Start Date | Operation | Result Date |
|---|---|---|
| Jan 1, 2024 | + 30 days | Jan 31, 2024 |
| Mar 15, 2024 | + 3 months | Jun 15, 2024 |
| Dec 25, 2024 | - 1 week | Dec 18, 2024 |
| Today | + 1 year | Next year same date |
❓ Frequently Asked Questions
A: Yes, the calculator automatically accounts for leap years in all calculations.
A: Currently, this calculator works with calendar days. For business days, weekends and holidays are not excluded.
A: Month calculations are calendar-based. Adding "1 month" to Jan 31 gives Feb 28/29 depending on leap year.
A: Yes, the calculator can handle dates from year 1000 to 9999.