Date Difference Calculator
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A date difference calculator finds the number of days, weeks, months, or years between two dates. Used to calculate ages, contract durations, time between events, and project timelines.
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Pro Tip
For contract law: "within 30 days" usually means calendar days, not business days. For court deadlines, confirm whether the rule uses calendar or business days and whether the deadline date is included.
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Did You Know?
The Unix timestamp — used in most computers and the internet — counts seconds since January 1, 1970, 00:00:00 UTC. On January 19, 2038, 32-bit Unix timestamps will overflow, potentially causing bugs in older systems. This is the "Year 2038 problem."
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