Date Difference Calculator - Calculate Days Between Dates

Calculate the exact difference between two dates in years, months, days, hours, minutes, and seconds. Perfect for project planning, age calculations, and event planning with precise results.

Select Date Range

Choose the start and end dates to calculate the difference

Start Date

End Date

Common Use Cases

Calculate your exact age
Project duration planning
Relationship milestones
Employment duration
Time between events
Historical date calculations

Quick Tips

Use "Today" buttons for current date
End date must be after start date
Accounts for leap years accurately
Shows both exact and total durations
Includes time down to seconds

About Date Calculations

This calculator determines the precise difference between two dates, accounting for varying month lengths and leap years. It provides both the exact duration in years, months, and days, as well as the total duration expressed in different units.

The calculations are accurate and consider all calendar complexities, making it perfect for age calculations, project planning, or any situation where you need to know the exact time between two dates.