Date Calculator
Online
date-calculator
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Select dates to calculate
Between Dates
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Frequently Asked Questions
Select the "Between Dates" mode, enter the start and end dates — the calculator will automatically show the difference in days, weeks, months, and years.
Switch to the "Add/Subtract" mode, select a date, enter the number and unit (days, weeks, or months). A negative number subtracts days.
Use the "Age" mode — enter your birth date, and the calculator will show your full age in years, months, and days, as well as the total number of days.
In the "Business Days" mode, enter the start and end dates. The calculator will count the number of weekdays (Monday through Friday), excluding weekends.