How do I calculate the difference between two dates?

Enter your start date and end date in the calculator. The tool will automatically calculate the difference and display it in years, months, weeks, days, hours, and minutes. You can also toggle to include or exclude the end date in the calculation.

What are business days and how are they calculated?

Business days (also called working days or weekdays) are Monday through Friday, excluding weekends. Our calculator can show you the number of business days between two dates, which is useful for project planning and deadline calculations.

Should I include the end date in my calculation?

This depends on your use case. If you're calculating an event duration (e.g., a vacation from Monday to Friday), you typically include the end date (5 days). If you're calculating time until an event, you usually exclude it. Our calculator offers both options.

Can I add or subtract days from a specific date?

Yes! Use the Date Calculator section to add or subtract any number of days from a specific date. This is useful for calculating future deadlines or past dates. Simply enter the starting date and the number of days to add or subtract.

Date Difference Calculator - Calculate Days Between Two Dates

Start Date

End Date

Include end date in calculation

Date Calculator

Starting Date

Days to Add/Subtract

How to Use Date Difference Calculator

The date difference calculator helps you find the exact time span between two dates. This is useful for:

Project Planning: Calculate project durations and timelines
Age Calculation: Find exact age or time since an event
Event Countdown: Days until holidays, birthdays, or deadlines
Business Days: Calculate working days for professional purposes
Historical Events: Time elapsed since historical dates

Understanding the Results:

Compound Format: Shows difference in years, months, and days (e.g., 2 years, 3 months, 15 days)
Total Units: Converts entire duration to single units (total days, hours, etc.)
Business Days: Counts only Monday-Friday, excluding weekends
Include End Date: Check this to count the end date as part of the duration

ToolEra

Date Difference Calculator

Business Days

Date Range

Date Calculator

Result Date

How to Use Date Difference Calculator

Understanding the Results:

Your Favorites