Date Difference Calculator
Find the number of days, weeks, and hours between two dates.
Days between dates
364
Weeks52
Hours8,736
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How the calculation works
This calculator applies the standard formula below to the values you enter. Results update instantly in your browser—nothing is submitted to a server.
Formula
Days = absolute difference in timestamps ÷ 86,400,000.
Worked example
January 1 to January 8 is 7 elapsed days.
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Frequently asked questions
Is this date difference calculator free?
Yes. It works instantly in your browser with no signup.
Are the results exact?
Results follow the stated formula, but real-world fees, timing, and rounding can vary.
Results are estimates for informational purposes and are not financial or professional advice.