About the date difference calculator
Count the days, weeks and approximate months between two dates, for project planning, countdowns or contract periods.
Formula used
Difference = End date − Start date (in days).
How to use
Fill in the fields above and the results update instantly. Change any value to compare scenarios. Results are estimates for planning and education and may differ from figures provided by banks, tax offices or doctors.
Frequently asked questions
Is the end date included?
The result counts days between dates; add 1 to include both.
Can the end be earlier?
Yes, the result shows the absolute difference.