CalcOS
Homedate timeDays Between Dates Calculator

Days Between Dates Calculator

Count the number of days, weeks, months, or years between two dates.

Enter inputs on the left to see results.
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How to Calculate & Use the Days Between Dates Calculator

Find the exact time interval between any two calendar dates using our free day counter. Enter a start and end date to calculate the total duration in days, weeks, and months. Toggle the inclusive option to count the end date as a full day in your final result.

Input & Variable Breakdown:

  • Start Date: Bounded variable used in the formulas.
  • End Date: Bounded variable used in the formulas.
  • Include End Date (+1 day): Bounded variable used in the formulas.

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Frequently Asked Questions

How do you calculate the days between two dates?

Select the start date and the end date. The calculator determines the total number of intervening calendar days, accounting for month lengths and leap years. You can also view the result broken down into weeks, months, and years.

What is the difference between inclusive and exclusive date counting?

Exclusive counting does not include the end date in the total count. Inclusive counting includes the end date as a full day in the calculation.

Can I calculate the time between a historical date and today?

Yes. You can input any historical date as the start date and set the end date to today to see exactly how much time has passed.