Day of Week Calculator
Use the Day of Week Calculator to find the weekday name for any valid date quickly on mobile or desktop.
Day of Week Calculator
Tool inputs are not stored, and private values stay out of analytics.
Result
How it works
Enter the required date or time, adjust the options, then run the Day of Week Calculator for a clear copyable result.
The tool works by reading the weekday from the validated Gregorian calendar date. Processing stays in the browser, and entered date or time values are not stored or sent to analytics.
Examples
Practical example
January 1, 2026 falls on a Thursday.
Accuracy note
Check the time zone and date format when comparing a result with another system.
FAQ
How do I use the Day of Week Calculator?
Enter the requested values, review the options, then calculate and read the result.
Are entered dates or times stored?
No. The calculation runs in the browser and input values are not stored.
Does it work on mobile?
Yes. The controls and results are designed for phones and desktop browsers.