EnAU

en-AU is a language tag that designates English as used in Australia. It is part of the IANA/BCP 47 standard for locale identifiers and combines the language code en with the region code AU to form en-AU. In computing and web localization, en-AU is used to tailor content, formatting, and cultural conventions for Australian users and is one of several English variants, alongside en-US, en-GB, and others.

Australian English is a variant of English that generally follows British spelling conventions while incorporating distinctive Australian vocabulary, phrasing, and usage. Spelling often aligns with British norms (for example colour, centre, organisation, realise), though technical terms may diverge and some American forms appear in specialized contexts. Australian English also includes unique terms and expressions such as arvo for afternoon or ute for utility vehicle, reflecting local culture and daily life.

Locale conventions associated with en-AU include date and time formats, currency, and measurement systems. The common date format is day/month/year (dd/MM/yyyy); the 24-hour clock is widely used in formal and public contexts; the currency is the Australian dollar (AUD); measurements follow metric units, with temperature in Celsius. Time zones vary across Australia, and the country’s telephone country code is +61. The country’s internet domain is .au.

En-AU is not a separate language but a regional variant of English used to improve accuracy and relevance for Australian audiences. It is represented in software and standards as en-AU, with some systems also using variants such as en_rAU.