Days Between Dates Calculator
Calculate the number of days between two calendar dates with clear inclusive-counting options.
Days elapsed—Loading today's date…
How this calculator works
Dates are converted to UTC calendar midnights before subtraction, which avoids daylight-saving-time distortions.
The standard difference excludes the start date. You can separately see the count when both dates are included.
The tool is arithmetic only. Where legal, payroll, holiday, timezone or jurisdiction-specific rules matter, the page states what is and is not included.
Frequently asked questions
Why does including both dates add one day?
The elapsed count between two dates excludes the start date. Including both named dates adds one day to that count.
Does daylight saving time affect the result?
No. The calculation uses calendar dates at UTC midnight rather than local elapsed hours.