Add/Subtract Days Calculator
Calculate future or past dates by adding or subtracting days, weeks, months, or years from any date.
Date Calculator
Select a date and specify the duration
Result
Future date after adding 30 days
Select a date and amount to calculate
Add or Subtract Days from a Date
Calculate future or past dates by adding or subtracting days, weeks, months, or years from any starting date.
Features
- Add days to find future dates
- Subtract days to find past dates
- Support for weeks, months, and years
- Shows the resulting day of week
- Displays formatted date in multiple formats
Common Use Cases
Project Planning
- Calculate project deadlines
- Schedule milestone dates
- Plan release dates
Personal Events
- Find dates for future events
- Calculate due dates
- Plan trip durations
Business Applications
- Calculate payment due dates
- Determine contract end dates
- Schedule recurring events
Time Units
| Unit | Description | |------|-------------| | Days | Exact calendar days | | Weeks | 7 calendar days | | Months | Same day next month (adjusted for month length) | | Years | Same day next year (adjusted for leap years) |
Tips
- Adding months preserves the day of month when possible
- If the target month has fewer days, it uses the last day
- Leap years are handled automatically
- Negative numbers work the same as switching to subtract mode