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Free online tool

Days Between Dates Calculator

Calculate the number of calendar days and weeks between two dates.

Reviewed/updated September 8, 2026
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Days between two dates

Select a start date and an end date to calculate the elapsed number of calendar days. The tool also displays the equivalent number of complete weeks plus remaining days.

The default result excludes the starting day, which is the usual mathematical difference between dates. An optional inclusive count adds one day so that both boundary dates are counted.

Questions

Frequently asked questions

What does inclusive counting mean?

Inclusive counting treats both the start date and end date as counted days.