About Hexadecimal Encoding
Hexadecimal is a base-16 number system using digits 0-9 and letters A-F. It's commonly used in computing because each hex digit represents exactly 4 bits, making it easy to convert between binary and hex.
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Input (Text)
Output (Hex)
Common ASCII Hex Values
A
0x41
B
0x42
C
0x43
0
0x30
1
0x31
9
0x39
a
0x61
z
0x7A
Space
0x20
!
0x21
@
0x40
#
0x23
LF
0x0A
CR
0x0D
Tab
0x09
Null
0x00
Frequently Asked Questions
Hexadecimal (base-16) uses digits 0-9 and letters A-F to represent values. Each hex digit represents 4 bits, making it compact for representing binary data. For example, the letter "A" is 41 in hex.
ASCII uses 7 bits to represent 128 characters (English letters, numbers, symbols). UTF-8 is a variable-length encoding that can represent all Unicode characters, using 1-4 bytes per character.
Space delimiter ("48 65 6C 6C 6F") is common and readable. No delimiter ("48656C6C6F") is compact. 0x prefix ("0x48 0x65") is used in programming.
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