Date Calculator — Add, Subtract & Diff Dates (Business Days)

Cách dùng

1. 1 Pick a mode — Add / subtract a duration from a date, or compute the Difference between two dates.
2. 2 In Add mode, type any positive or negative number into the Years / Months / Weeks / Days / Hours / Minutes fields.
3. 3 In Difference mode, pick both dates and times. Calendar breakdown plus totals appear instantly.
4. 4 Copy the ISO result with the Copy ISO button (Add mode).

Vì sao dùng công cụ này

• Day-of-month clamp — adding 1 month to Jan 31 gives Feb 28 or 29, not "Feb 31".
• Calendar Y/M/D breakdown alongside totals — both views matter for different jobs.
• Business-days counter excludes weekends (Mon–Fri).
• No timezone surprises — calculations stay in your local zone.

Câu hỏi thường gặp

Date Calculator là gì?

A Date Calculator is a tool that adds or subtracts years, months, weeks, days, hours, and minutes from a given date, or computes the difference between two dates. It runs in the browser and includes a business-day count, returning a resulting date or a duration broken down into calendar units.

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