Date
Calculator

Calculate days between dates or add and subtract days from any date.

Total days

0

Breakdown

0y 0mo 0d

Total weeks

0

Business days (Mon–Fri)

0

Weekend days

0

Learn more

Why do computers count seconds from January 1, 1970 — and what happens in 2038?

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Frequently Asked Questions

Enter a start date and specify the number of days to add or subtract. The calculator handles month-end boundaries, leap years, and year rollovers automatically.

January, March, May, July, August, October, and December have 31 days. April, June, September, and November have 30 days. February has 28 days in common years and 29 in leap years.

Find the total number of days between the two dates and divide by 7. For partial weeks, round down for whole weeks or keep the decimal to express it as fractional weeks.

Date Calculator - Days Between Dates & Add Days | ToolsCanvas