Date & Time
Date Difference Calculator
Find the time between two dates for planning, projects, or countdowns.
Inputs
Results
Result
Enter values to calculate.
Your result explanation will appear here.
Useful next checks
- Confirm timezone and calendar assumptions for important dates.
- Try nearby dates to compare different scenarios.
- Use the detail text to check exactly what was counted.
Intro
Use this date difference calculator to find the elapsed time between two dates.
How it works
Enter a start date and end date. The calculator shows the number of days and approximate weeks and years.
Formula
Elapsed days are calculated from the difference between midnight on each date.
Example calculation
From 1 January to 31 January is 30 elapsed days.
FAQs
- The result is not an inclusive date count.
- If dates are entered backwards, the calculator shows the absolute difference.
Related calculators
Frequently asked questions
Are both dates included?
The main result shows elapsed days between dates, not an inclusive count.
Can the end date be before the start date?
Yes. The calculator reports the absolute difference.