Date Calculator
Calculate the difference between dates, add or subtract time, and get detailed date information.
Exclude weekends
Select dates to calculate
Find the difference between dates, add time, or explore date details
Ctrl+Enter to runCtrl+Shift+C to copy
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Date Calculator: Find Days Between Dates & Add/Subtract Days
Learn how date calculations work and find the difference between dates, add days, and determine weekdays instantly.
What Is a Date Calculator?
A date calculator is a tool that performs arithmetic with dates — finding the difference between two dates, adding or subtracting days from a date, and determining what day of the week a given date falls on. These calculations are surprisingly complex due to varying month lengths, leap years, and time zones.
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