Date Diff
Pick start & end
Start
End
About Date Diff
Compare two local dates/times or add a duration to a base date. See totals (ms→weeks), calendar-aware breakdown (years/months/days…), and business-day counts excluding weekends and your custom holidays.
- Include time switches between date-only and full datetime math for Difference.
- Count end day adds the end date in day/business counts (useful for inclusive ranges).
- Add/Subtract applies years/months first (safe month carry), then weeks→seconds.
Related Tools
About this collection
Each page is built around one practical task. Enter what you need, review the result, and use the actions provided by the tool.
What to expect
- Inputs and results kept together
- Layouts that adapt to smaller screens
- Direct links for returning to a tool
- No account needed for the listed utilities
Need something else? Request a tool.