52
4
0x34 · 0110100
ASCII 52 — the 4 character
Digits
4 is 52 in decimal, 34 in hex and 0110100 in binary. Its bottom four bits are the digit 4 itself.
Zero sits at 48, so the bottom four bits are the digit itself.
Seven bits
ASCII is seven bits wide, which is why there are 128 of them. The eighth bit was long left for parity.
0110100
One bit — the sixth, worth 32 — separates the cases. Off gives a capital, on gives a lowercase letter.
- Kind
- Digits
- Decimal
- 52
- Hexadecimal
- 0x34
- Octal
- 064
- Binary
- 0110100
- HTML entity
- 4
- URL encoding
- 4
- CSS escape
- \34
- Digit value
- 4
The chart
Eight columns for the top three bits, sixteen rows for the bottom four. The capitals column sits right beside the lowercase one — that is the shape of the table.
0NUL1SOH2STX3ETX4EOT5ENQ6ACK7BEL8BS9HT10LF11VT12FF13CR14SO15SI16DLE17DC118DC219DC320DC421NAK22SYN23ETB24CAN25EM26SUB27ESC28FS29GS30RS31US32SP33!34"35#36$37%38&39'40(41)42*43+44,45-46.47/48049150251352453554655756857958:59;60<61=62>63?64@65A66B67C68D69E70F71G72H73I74J75K76L77M78N79O80P81Q82R83S84T85U86V87W88X89Y90Z91[92\93]94^95_96`97a98b99c100d101e102f103g104h105i106j107k108l109m110n111o112p113q114r115s116t117u118v119w120x121y122z123{124|125}126~127DEL
Codes either side
How to read this
- Add 32 to a capital and you get the lowercase letter — one bit flips.
- Digits start at 48, so subtracting 48 from the code gives the number.
- Holding Ctrl clears the top three bits — that is why Ctrl+I is a tab.
- Everything under 32, plus 127, draws nothing. Those show their abbreviation instead.
Frequently asked questions
Q. What is the ASCII code for 4?
Decimal 52, hex 34, octal 064, binary 0110100.
Q. How do I write 4 in HTML?
As 4.
Q. How does it go in a URL?
It can stay as it is — this character needs no encoding.
Q. Does 4 have a partner?
No case partner: it is not a letter but a digit.