Calculation method
The calculation compares date boundaries directly. It does not assume that a month has 30 days, and leap days are naturally included when the interval crosses them.
📅 DATE DIFFERENCE
How far apart are two dates?
Two dates in. One satisfyingly exact number out.
Total days
Weeks + days
Approx. months
Hours
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METHOD & INTERPRETATION
Date Difference Calculator
Use two calendar dates to calculate the exact elapsed-day distance, plus a human-friendly weeks-and-days representation.
Reading the output
“Days between” uses elapsed days. An inclusive count that counts both endpoint labels can be one day larger, so the convention matters.
Worked example
From 1 March to 15 March there are 14 elapsed days, which is exactly two full weeks.
Good to know
Understand date-difference conventions →Any month figure is marked approximate because calendar months have unequal lengths.