Method
How this tool works
Whole days are counted between midnight UTC boundaries, avoiding daylight-saving time shifts.
Worked example
1 January to 1 February 2026 is 31 days, or 4 weeks and 3 days.
Calendar time, clearly counted
Date Difference Calculator
Find the signed number of days, weeks and calendar span between two dates.
Use responsibly
Assumptions & limitations
The result excludes the starting day. Add one day if you need an inclusive count. This version does not exclude holidays.
Last reviewed: 20 July 2026
Calculation and copy checked for this release.