Day of the Week Calculator
What day any date falls on, past or future.
Friday
Friday
Full date
December 25, 2026
Weekend?
No
Day number
5 (ISO)
ShowHide the working
- 1December 25, 2026 is a Friday
Formula
calendar weekday lookupHow it works
What day of the week any date falls on, past or future.
Example
25 December 2026 falls on a Friday.
About the Day of the Week Calculator
What day any date falls on, past or future. It sits in the Date & Time section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Day of the Week Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Day of the Week Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Day of the Week Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Date & Time?
- Ages, durations, business days, countdowns and time zones. You can browse the full Date & Time category for related calculators.