Our everyday number system using 10 digits (0-9). Column values are powers of 10.
The computer's language using 2 digits (0-1). Column values are powers of 2.
Uses 16 digits (0-9 and A-F) as a human-friendly shorthand for binary. One hex digit represents four binary digits (a nibble).
Uses: MAC Addresses, Colour Codes (#FF5733), Memory Dumps.
A=10, B=11, C=12, D=13, E=14, F=15
This two-step process is often faster and less prone to errors:
To convert from Hex to Denary, use place values that are powers of 16. For a two-digit hex number like 'B4', the columns are 16s and 1s.
The rightmost binary column is 20, which equals 1, not 2. A common error is starting the columns at 2 instead of 1.
It's easy to forget the values for A-F. Write them down! A=10, B=11, C=12, D=13, E=14, F=15.
When converting Hex to Binary, each Hex digit MUST become a 4-bit nibble. Hex '7' is `0111`, not `111`.
0-9. Used by humans. Powers of 10.
0-1. Used by computers (on/off). Powers of 2.
0-9, A-F. Human-friendly shorthand for binary. Powers of 16.
When converting between Denary and Hexadecimal, it's often easiest to use Binary as a middle step.
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