makeatimerDates
Date difference calculator
Find the number of calendar days, months, and years between two dates.
Inputs
Result
1 years, 0 months, 0 days · end date excluded
How to use date difference calculator
Compare dates for a project, trip, or milestone. The main result gives signed calendar days; the second line describes the same interval in calendar years, months, and days.
Worked example
January 1, 2026 to January 1, 2027 is 365 days, or 1 calendar year.
What the result means
The start is included and the end is excluded. These are calendar days, not a count of 24-hour periods between zoned instants.
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