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Date Calculator

Calculate days between dates, add or subtract days, and find any future or past date.

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Days between dates
Weeks
Business Days (approx.)
Months (approx.)
Years (approx.)

Date calculation uses

Date calculators are essential for project planning, legal deadlines, age calculation, event planning, and understanding contract terms. Use the "Days Between" mode to find the duration between any two dates, and "Add/Subtract Days" to find a future or past date.

How many days between two dates?
Enter start and end dates to see the exact number of days, weeks, months, and years between them.
How do I add days to a date?
Enter your starting date and the number of days to add (or subtract with a negative number) to find the resulting date.
How many weeks is 90 days?
90 days = 12 weeks and 6 days.
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