Measure a span
See date-based calendar days beside exact elapsed hours and minutes. Choose whether the end date counts.
Local timeCalendar logic, explained
Calendar math, made clear
Dates should not
feel ambiguous.
Choose the holiday calendar that applies, then count days, move a deadline, or plan time off. Language and calendar rules stay separate.
Calculate a date ↓Three jobs, one calm surface
The result is only useful when the rule is visible.
Move a date
Add months as calendar months, not a guessed number of days. Month ends clamp deliberately and visibly.
Use the right calendar
Keep interface language separate from the country or region whose holidays affect the result.
A useful boundary
Calendar guidance, not legal advice.
“Business day” can differ by contract, employer, market, and location. Always check the selected holiday calendar and its published coverage; add your own dates when organizational closures matter.
All calculations happen locally. Dates are placed in the URL only when you choose Copy share link.