Day of the Week Calculator
Find out what day of the week any date falls on, past, present, or future.
How this is calculated
This calculator uses the standard Gregorian calendar, the same calendar system in everyday use, to find the weekday for the date you enter. It works correctly for any past or future date within the normal calendar range this site supports. Curious how to work it out with pencil and paper? See How to Find the Day of the Week for Any Date by Hand.
Frequently asked questions
How is the day of the week calculated?
This calculator uses the standard Gregorian calendar to find the weekday for any date you enter. It works correctly for any date within the normal calendar range this site supports, past or future.
Can I find out what day of the week I was born?
Yes. Enter your birth date and the calculator shows the weekday it fell on. Pair it with the Age Calculator if you also want your exact age, not just your birth weekday.
Sources
- GeeksforGeeks, Zeller's Congruence
Built and maintained by Ready Utilities, founded by Cedrick Reese, a retired veteran and web developer. Every formula and convention on this site is checked against real, current sources before publishing. This calculator runs entirely in your browser, nothing you enter is sent anywhere. Spot something that looks wrong? Let us know.