Skip to content
QuicklyTools

Browser Language Checker

See your browser's preferred languages in order, the locale used for formatting, and the likely Accept-Language header.

Runs in your browser
Loading tool…

About the Browser Language Checker

Websites choose translations and formats from your language preferences. If a site shows the wrong language or date format, check what your browser actually sends: the ordered language list, the locale used for dates and numbers, and the Accept-Language header it implies.

How to use it

  1. Open the page.
  2. Review the language list and formatting examples.
  3. Change languages in your browser settings if needed.

Good to know

  • The Accept-Language shown is reconstructed from navigator.languages and may differ slightly in q-values.
  • Information is read by your browser on this page only. It is not sent to or stored by our servers.

Frequently asked questions

How do I change my browser language?

Chrome: Settings → Languages. Firefox: Settings → General → Language. Safari uses macOS/iOS system languages.

Why are dates in a different format?

Formatting follows the first locale; en-US uses month/day/year while en-GB uses day/month/year.

More browser & privacy →