Math
Date Calculator
Days between two dates, or add and subtract days from a date.
Result
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Enter dates above
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Frequently asked questions
How do I find the number of days between two dates?
Use the "Days between two dates" tab, enter a start and end date, and the calculator counts every day between them, including a total in weeks.
How do I add or subtract days from a date?
Switch to the "Add or subtract days" tab, pick a starting date, enter how many days, and choose whether to add or subtract — useful for deadlines, due dates, or contract terms.
Does this account for leap years?
Yes — the calculation works directly with real calendar dates, so leap years and varying month lengths are handled automatically.