A number’s base changes its notation, not its mathematical value, but software systems often attach width and sign rules to the representation.
Use hexadecimal when grouping bits into readable…
Use hexadecimal when grouping bits into readable nibbles, binary when inspecting individual flags, and decimal when communicating quantities to most readers.
Document width, signedness, and overflow rules when…
Document width, signedness, and overflow rules when a value is used in a protocol or binary file. A bare hexadecimal number does not describe those rules.
Do not infer a byte order from…
Do not infer a byte order from a number’s printed base. Endianness describes how bytes are arranged in memory or a file.
Use the related tool carefully
This guide is paired with a browser-only utility. The tool is a practical aid for small examples and inspection; it is not a substitute for application testing, a formal data pipeline, or professional review where the decision has higher consequences.
Open the related Number Base Converter