Date Calculator
Calculate dates by adding/subtracting time periods or find intervals between dates. All calculations are performed locally in your browser for privacy.
Add/Subtract Time
Add or subtract years, months, and days from a starting date
Result Date
Add or subtract years, months, and days from a starting date
How to Use Date Calculator
This tool helps you perform date calculations with precision and ease.
Two Calculation Modes
- Add/Subtract Mode: Calculate a future or past date by adding or subtracting years, months, and days
- Interval Mode: Calculate the time difference between two specific dates
Key Features
- Precise date arithmetic handling leap years and month-end scenarios
- Business days calculation excluding weekends
- Multiple result formats (days, weeks, months, years)
- Sample data for common use cases
- Export and copy functionality for results
Common Use Cases
- Project timeline planning (e.g., 90 business days from start)
- Age calculations and anniversary dates
- Contract duration and deadline calculations
- Event planning and scheduling
- Historical date analysis
All calculations are performed locally in your browser. No data is sent to external servers.