Date Difference Calculator
Pick two dates and see the difference expressed in days, weeks, months, and years, plus total seconds. Handles leap years and daylight saving correctly.
Runs locally in your browser
Difference
26y 3m 29d
9,616 days total
Days
9,616
Weeks
1373.71
Months (avg)
315.97
Years (avg)
26.327
Business days
6,869
Weekend days
2,747
Hours
230,784
Minutes
13,847,040
Seconds
830,822,400
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About Date Difference Calculator
Pick two dates and see the difference expressed in days, weeks, months, and years, plus total seconds. Handles leap years and daylight saving correctly.
Date Difference Calculator is part of FizzKit — a collection of focused, browser-based tools. Because everything runs locally, it works offline once loaded and never exposes your data to a remote server.
Frequently asked questions
The tool counts calendar months where possible. "Feb 28 to Mar 28" is one month even though February is shorter.