What is the Day of the Week Finder?
Find the weekday, week number and day-of-year for a date. The Day of the Week Finder is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other Date & Time tools on DevNibble such as Date Difference Calculator, Age Calculator, Duration Formatter.
How to use the Day of the Week Finder
- Paste or type your input.
- The result appears instantly.
- Copy or download it.
Features
- Runs 100% in your browser — your data is never uploaded or stored.
- Free forever, with no account, no ads and no tracking.
- Copy or download your result in one click.
- Fast and responsive on desktop, tablet and mobile.
Frequently asked questions
Is the Day of the Week Finder free to use?
Yes — Day of the Week Finder is completely free with no sign-up, no ads and no limit on how many times you can use it.
Is my data private when I use the Day of the Week Finder?
Everything happens locally in your browser. Your input is never sent to a server, which makes Day of the Week Finder safe to use with private or sensitive data.
How do I use the Day of the Week Finder?
Choose your options and click Generate. Every result can be copied with a single click.
Are the generated values unique?
Day of the Week Finder generates fresh values locally each time you run it, using secure randomness where it matters. Find the weekday, week number and day-of-year for a date.