ASCII Converter

Convert between ASCII text, decimal, hexadecimal, binary and octal

Text to ASCII

Enter Text

Decimal Values

Hexadecimal Values

Binary Values

Octal Values

Numbers to Text

Enter Values

Input Type

Separator:

Text Result

ASCII Reference Table

Char	Dec	Hex	Bin	Desc
	0	0	0000000	NUL
	1	1	0000001	SOH
	2	2	0000010	STX
	3	3	0000011	ETX
	4	4	0000100	EOT
	5	5	0000101	ENQ
	6	6	0000110	ACK
	7	7	0000111	BEL
	8	8	0001000	BS
	9	9	0001001	TAB
	10	A	0001010	LF
	11	B	0001011	VT
	12	C	0001100	FF
	13	D	0001101	CR
	14	E	0001110	SO
	15	F	0001111	SI
	16	10	0010000	DLE
	17	11	0010001	DC1
	18	12	0010010	DC2
	19	13	0010011	DC3
	20	14	0010100	DC4
	21	15	0010101	NAK
	22	16	0010110	SYN
	23	17	0010111	ETB
	24	18	0011000	CAN
	25	19	0011001	EM
	26	1A	0011010	SUB
	27	1B	0011011	ESC
	28	1C	0011100	FS
	29	1D	0011101	GS
	30	1E	0011110	RS
	31	1F	0011111	US
	32	20	0100000	Space
`!`	33	21	0100001	!
`"`	34	22	0100010	"
`#`	35	23	0100011	#
`$`	36	24	0100100	$
`%`	37	25	0100101	%
`&`	38	26	0100110	&
`'`	39	27	0100111	'
`(`	40	28	0101000	(
`)`	41	29	0101001	)
`*`	42	2A	0101010	*
`+`	43	2B	0101011	+
`,`	44	2C	0101100	,
`-`	45	2D	0101101	-
`.`	46	2E	0101110	.
`/`	47	2F	0101111	/
`0`	48	30	0110000	0
`1`	49	31	0110001	1
`2`	50	32	0110010	2
`3`	51	33	0110011	3
`4`	52	34	0110100	4
`5`	53	35	0110101	5
`6`	54	36	0110110	6
`7`	55	37	0110111	7
`8`	56	38	0111000	8
`9`	57	39	0111001	9
`:`	58	3A	0111010	:
`;`	59	3B	0111011	;
`<`	60	3C	0111100	<
`=`	61	3D	0111101	=
`>`	62	3E	0111110	>
`?`	63	3F	0111111	?
`@`	64	40	1000000	@
`A`	65	41	1000001	A
`B`	66	42	1000010	B
`C`	67	43	1000011	C
`D`	68	44	1000100	D
`E`	69	45	1000101	E
`F`	70	46	1000110	F
`G`	71	47	1000111	G
`H`	72	48	1001000	H
`I`	73	49	1001001	I
`J`	74	4A	1001010	J
`K`	75	4B	1001011	K
`L`	76	4C	1001100	L
`M`	77	4D	1001101	M
`N`	78	4E	1001110	N
`O`	79	4F	1001111	O
`P`	80	50	1010000	P
`Q`	81	51	1010001	Q
`R`	82	52	1010010	R
`S`	83	53	1010011	S
`T`	84	54	1010100	T
`U`	85	55	1010101	U
`V`	86	56	1010110	V
`W`	87	57	1010111	W
`X`	88	58	1011000	X
`Y`	89	59	1011001	Y
`Z`	90	5A	1011010	Z
`[`	91	5B	1011011	[
`\`	92	5C	1011100	\
`]`	93	5D	1011101	]
`^`	94	5E	1011110	^
`_`	95	5F	1011111	_
`	96	60	1100000	`
`a`	97	61	1100001	a
`b`	98	62	1100010	b
`c`	99	63	1100011	c
`d`	100	64	1100100	d
`e`	101	65	1100101	e
`f`	102	66	1100110	f
`g`	103	67	1100111	g
`h`	104	68	1101000	h
`i`	105	69	1101001	i
`j`	106	6A	1101010	j
`k`	107	6B	1101011	k
`l`	108	6C	1101100	l
`m`	109	6D	1101101	m
`n`	110	6E	1101110	n
`o`	111	6F	1101111	o
`p`	112	70	1110000	p
`q`	113	71	1110001	q
`r`	114	72	1110010	r
`s`	115	73	1110011	s
`t`	116	74	1110100	t
`u`	117	75	1110101	u
`v`	118	76	1110110	v
`w`	119	77	1110111	w
`x`	120	78	1111000	x
`y`	121	79	1111001	y
`z`	122	7A	1111010	z
`{`	123	7B	1111011	{
`\|`	124	7C	1111100	\|
`}`	125	7D	1111101	}
`~`	126	7E	1111110	~
	127	7F	1111111	DEL

All processing happens in your browser. No data is sent to any server.

Usage Examples

Text to All Formats

Convert "Hello World!" to see its ASCII decimal, hexadecimal, binary and octal representations simultaneously.

Decimal to Text

Enter decimal values "72 101 108 108 111" and convert them back to readable text "Hello".

ASCII Education

Explore how text is encoded in different number systems used by computers.

Features

Multi-Format Output

Convert text to decimal, hexadecimal, binary and octal values simultaneously

Reverse Conversion

Convert numbers back to text with support for decimal, hex, binary and octal input

ASCII Reference Table

Complete ASCII table (0-127) showing character, decimal, hex, binary and description

Privacy First

All conversions happen locally in your browser, no data sent to servers

How to Use?

Enter Text

Type or paste text in the input field to see its ASCII values in decimal, hex, binary and octal.

Or Enter Numbers

Enter space-separated numbers and select the input type (decimal, hex, binary, octal) to convert back to text.

Copy Results

Copy any output format with one click. Use the ASCII table for quick reference.

Frequently Asked Questions

ASCII (American Standard Code for Information Interchange) is a 7-bit character encoding standard that assigns numbers 0-127 to characters. Characters 0-31 are control codes (like newline=10, tab=9). Character 32 is space. Characters 33-126 are printable symbols, letters, and digits. Character 127 is DEL. Extended ASCII (128-255) uses an 8th bit and varies by codepage; Unicode covers everything beyond that.

All four are just different ways to write the same number. Decimal (base 10) is what humans normally use: "A" = 65. Hexadecimal (base 16) is common in programming: "A" = 0x41. Binary (base 2) shows the raw bit pattern: "A" = 01000001. Octal (base 8) is less common today but used in Unix file permissions: "A" = 101. This tool shows all four simultaneously for any text you enter.

Use the Numbers to Text panel. Enter space-separated values (e.g., "72 101 108 108 111" for "Hello"), then select the input type (decimal, hex, binary, or octal) from the dropdown and click Convert to Text. For hex, enter values like "48 65 6C 6C 6F" with or without the 0x prefix.

Control characters are non-printable codes that historically controlled hardware. The most useful ones today: 9 = Tab (\t), 10 = Line Feed / newline (\n), 13 = Carriage Return (\r), 32 = Space. You will see these when encoding text that contains tabs or newlines — they appear as numeric codes in the output. The ASCII reference table shows the name of each control character.

The ASCII standard assigns numbers to characters by convention — the specific values were chosen in the 1960s. Uppercase letters A-Z run from 65 to 90. Lowercase a-z run from 97 to 122. Digits 0-9 run from 48 to 57. There is exactly a 32-point difference between uppercase and lowercase letters, which makes case conversion a simple bitwise operation.

Standard ASCII only covers 0-127. Characters like é, ü, or emoji are Unicode code points beyond 127. When you type them, the tool will show their Unicode code point values, which are larger than 127. For example, "é" is Unicode U+00E9 (decimal 233). Emoji like 😊 have code points in the tens of thousands. The ASCII reference table only covers the standard 0-127 range.

The reference table is a quick lookup for all 128 standard ASCII characters showing their character, decimal, hex, binary value, and description. It is useful when debugging encoding issues, working with embedded systems, writing network protocols, or understanding why certain characters behave unexpectedly in code.

No. All conversions run locally in your browser via JavaScript. Nothing is uploaded or transmitted.

What Is ASCII Converter?

Type text and see its ASCII values in decimal, hex, binary, and octal simultaneously. Or go the other way -- enter numeric codes and get the text back. Includes a complete ASCII reference table.

Key Features

Simultaneous output in four formats (decimal, hex, binary, octal), reverse conversion from numbers to text, complete ASCII table (0-127), multiple input separators, real-time updates.

Common Use Cases

Debugging character encoding issues, understanding how text maps to numbers, working with embedded systems, or looking up specific ASCII values quickly.

Tips

Standard ASCII is 0-127. Characters 0-31 are control codes, 32 is space, 33-126 are printable. Extended characters use Unicode code points beyond 127.

Privacy

Everything runs in your browser. No text or codes leave your device.

Security and Privacy

Your data security is our priority

Local Processing

All processing happens in your browser

No Data Transfer

Your data is not sent to our servers

No Data Storage

No data is stored or shared

SSL Encryption

SSL encryption for secure connection

Next Step

Binary to Text Converter

Convert between binary and text (ASCII/UTF-8)

Unicode Text Converter

Convert normal text to fancy Unicode text styles

Was this tool useful?

ASCII Converter

Text to ASCII

Numbers to Text

ASCII Reference Table

Usage Examples

Text to All Formats

Decimal to Text

ASCII Education

Features

Multi-Format Output

Reverse Conversion

ASCII Reference Table

Privacy First

How to Use?

Enter Text

Or Enter Numbers

Copy Results

Frequently Asked Questions

What is ASCII and what range does it cover?

What is the difference between decimal, hex, binary, and octal representations?

How do I convert numbers back to text?

What are the control characters (ASCII 0-31)?

Why does "A" have a decimal value of 65?

What happens with non-ASCII characters like accents or emoji?

What is the ASCII reference table used for?

Is data sent to a server?

What Is ASCII Converter?

Key Features

Common Use Cases

Tips

Privacy

Security and Privacy

Local Processing

No Data Transfer

No Data Storage

SSL Encryption

Next Step

Binary to Text Converter

Unicode Text Converter

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