Date Difference Calculator
Calculate the exact difference between two dates in days, weeks, months, or years.
Dates
Difference
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Run calculation
Days—
Weeks—
Months (approx)—
Years (approx)—
Quick date math without spreadsheets
Useful for project deadlines, content publication anniversaries, customer tenure, contract durations. The calculator handles the leap-year edge cases automatically.
Frequently Asked Questions
Why are months approximate?
Months have 28-31 days. The calculator uses 30.44 (the average month length) for a reasonable approximation.
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