Days Between
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Weeks
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Months
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Years
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Business Days
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Result Date
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Day of Week
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Days from Today
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Find days between two dates, add or subtract days from a date, and calculate deadlines and anniversaries.
To find the number of days between two dates, subtract the earlier date from the later date. Each day equals 86,400 seconds or 24 hours. Our date calculator handles all the math automatically, including leap years. It also calculates business days — excluding Saturdays and Sundays — which is useful for project deadlines and legal timeframes.
Common uses for a date calculator include calculating project deadlines, finding out how many days until an event, calculating someone's exact age, determining due dates, figuring out payment deadlines, and tracking anniversaries.