Calculate the difference between two dates in days, weeks and more. Find how long until or since any date. Free date difference calculator.
About this tool
Compare two dates in days, weeks and other displayed calendar totals.
How to use Date Difference Calculator
- Enter Start date and End date.
- Choose Include the end date when both endpoints should be counted, or use Swap dates.
- Read Difference, Business days and Weekend days.
Worked example
From January 1 to January 2 is one day of elapsed date difference; including the end date adds one day to the count.
Does the business-day total exclude public holidays?
No. It distinguishes weekdays and weekends rather than using a country-specific holiday calendar.
Are hour totals exact across daylight-saving changes?
They are derived from date arithmetic, not a zone-specific elapsed-time interval. Use a suitable time-zone calculation for exact instants.
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