What is Hexadecimal (Base 16)?
Hex uses 16 symbols: 0–9 and A–F.
Each letter represents a value:
A = 10, B = 11, C = 12, D = 13, E = 14, F = 15.
Hex → Decimal (Base 10)
Step 1: Start from the right side of the number.
Step 2: Multiply each digit by 16 raised to its position (starting at 0).
Step 3: Add all results together.
Hex → Binary (Base 2)
Step 1: Take each hex digit separately.
Step 2: Convert each digit into its 4-bit binary value.
Step 3: Join all binary groups together.
Example:
1 = 0001
A = 1010
3 = 0011
So: 1A3 = 0001 1010 0011
Quick Rules
• Decimal conversion = sum of (digit × power of 16)
• Binary conversion = 4-bit lookup per hex digit