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Date Difference

Calculate the number of days between two dates

date differencedays betweeninterval

📖 How to Use

  1. Enter the start date
  2. Enter the end date
  3. Click "Today" to quickly fill in today's date
  4. Click Calculate Difference

📐 Formula

Difference = |end date − start date| (in days)
Also converts to weeks, months, and hours

❓ FAQ

How are leap years handled?
Leap years are automatically accounted for — Feb 29 is correctly included in the count.

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About Date Difference

This tool is completely free, no registration required. Works directly in your browser. Supports both PC and mobile devices.

Date Difference is a free online tool that works on both PC and mobile. No registration or download required — just open in your browser. Results are accurate and reliable for everyday use and professional reference.