Date & Time Tools
Day of Week Calculator
Find out which day of the week any date falls on.
Loading tool…
What is Day of Week?
A quick calendar lookup: the weekday for any historical or future date, with extra context like day-of-year and remaining days.
How it works
The native Date object's getDay() is reliable for the full Gregorian range browsers support, including dates before 1970.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Paste or type any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.