Finding the Extended Edition specifically (rather than the theatrical version) requires checking the "Edition" tags on major platforms.
: Another reliable source for high-definition rentals. What the Extended Edition Adds The Hobbit: An Unexpected Journey (extended edition) The Hobbit An Unexpected Journey Extended Edition Online
: You can often find the Extended Edition on Max (formerly HBO Max), which typically hosts the complete Middle-earth collection. In other regions like Australia, it is available on Stan . Finding the Extended Edition specifically (rather than the
Journey Back to Middle-earth: Watching The Hobbit: An Unexpected Journey Extended Edition Online The Hobbit An Unexpected Journey Extended Edition Online
: Major digital storefronts offer the film for individual purchase: Apple TV : Provides the 4K HDR version with Dolby Atmos.