Date Difference Calculator - Calculate Days Between Dates Online
Free online date difference calculator to calculate days, weeks, months, and years between two dates. Perfect for project planning and time tracking.
Date Range
Date Difference Results
Enter start and end dates to calculate the difference
About Date Difference Calculator
The Date Difference Calculator helps you calculate the time difference between two dates in various units.
Calculations:
- Total Days: Exact number of days between dates
- Years: Complete years in the difference
- Months: Complete months in the difference
- Weeks: Complete weeks in the difference
Date Handling:
- Accounts for leap years
- Considers month length variations
- Handles different calendar systems
- Accurate to the day
Applications:
- Project planning and timelines
- Age calculations
- Event planning
- Contract duration
- Financial calculations
Use Cases:
- Calculate project duration
- Determine age in days
- Plan event timelines
- Calculate interest periods
- Track time between events
Important Notes:
- Results are inclusive of both dates
- Leap years are automatically handled
- Month calculations consider actual month lengths
- Week calculations are based on 7-day periods
Note: This calculator uses the Gregorian calendar and accounts for leap years. Results are accurate to the day.
Frequently Asked Questions
How do I calculate days between dates?
Enter the start date and end date, and the calculator will determine the exact number of days between them, including both dates.
Are leap years considered?
Yes, the calculator automatically accounts for leap years when calculating date differences.
Can I calculate future dates?
Yes, you can calculate differences between any two dates, including future dates.
What if the end date is before the start date?
The calculator will still work and show the difference, but the result will be negative if the end date is before the start date.
How accurate are the calculations?
The calculations are accurate to the day, accounting for leap years and month length variations.