HexInspector is an extension for Visual Studio Code that provides fast and easy way to peek other forms of a hexadecimal/binary/decimal value. You just need to point a value and other forms will be summarized in a hover. Value is recognized as:
hexadecimal if it starts with 0x or # (e.g. 0x123, #1234),
binary if it starts with 0b (e.g. 0b101),
decimal if it is contains only digits.
The extension supports both Little-Endian and Big-Endian byte order. You can choose endianness in settings. The order of displayed forms and input types that trigger the hover can be also set in settings.