Date Difference Calculator

Calculate the exact number of days, weeks, months, and years between two dates. Free online date difference calculator with business days calculation.

Calculate Date Difference

Select or enter the start date
Select or enter the end date

What You'll Get

  • Exact Year, Month, and Day breakdown
  • Total Days & Hours
  • Business Days
  • Weekend Days

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HowItWorks

Simply enter a start date and end date, then click 'Calculate Difference' to see the exact time between them. You can also use the 'From Today' button to quickly calculate from the current date.

About This Calculator

Calculate the difference between two dates with our free date calculator. Get instant results showing years, months, weeks, days, hours, and even business days between any two dates.

Frequently Asked Questions

Enter your start date and end date in the calculator, then click 'Calculate Difference'. The calculator will instantly show the number of days, weeks, months, and years between the two dates.

Business days are weekdays (Monday through Friday), excluding weekends. Our calculator can show both total days and business days for professional planning purposes.

Our calculator is 100% accurate and accounts for leap years, varying month lengths, and calendar irregularities. It uses precise date arithmetic for all calculations.

Mathematical Explanation

MathematicalExplanation

Frequently Asked Questions

Enter your start date and end date in the calculator, then click 'Calculate Difference'. The calculator will instantly show the number of days, weeks, months, and years between the two dates.

Business days are weekdays (Monday through Friday), excluding weekends. Our calculator can show both total days and business days for professional planning purposes.

Our calculator is 100% accurate and accounts for leap years, varying month lengths, and calendar irregularities. It uses precise date arithmetic for all calculations.

Yes! Use the 'From Today' button to automatically set the start date to today, then enter your future date to see how many days remain.

Absolutely! Our calculator handles any date range, from days apart to decades or even centuries. It accurately accounts for all calendar complexities.

Resources & References

Encyclopedia Resources
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