Date Difference Calculator

Pick two dates and get the difference in days, weeks, months (approx), years (approx), and optional business days.

Start date

End date

Include end date Show business days (Mon–Fri)

Notes

Months/years are shown as approximations (based on average month length). Days/weeks are exact.

Business days counts Monday through Friday and ignores holidays.

Shortcut: Ctrl/⌘ + Enter to calculate.

No logins. No uploads. Runs locally in your browser.

Tip: use End = Today for “days since…”