Text to ASCII Code Converter

By Suraj GiriUpdated 24 September 2026

This converter works on code values, one at a time, from the table. Codes run from 0 to 127; anything above that is reported as out of range. For whole text rather than single codes, use Text to Binary; for code values above 127, use Text to Decimal.

Going the other way? Convert ASCII code back to text →

How do you convert text to ASCII code?

Text to ASCII code conversion replaces each character with its row number in the 0–127 ASCII table, so A becomes 65 and a space becomes 32.

1. Take the first character and find its code in the table: A is 65.
2. Write the code as a plain decimal number, with no leading zeros.
3. Repeat for every character, spaces included, and separate the codes with a single space: A = 65.

Text to ASCII writes each character as its code, A as 65; the binary and text converters write that same code in binary, hex or octal.

Text to ASCII Code Conversion Table

The codes this page works through, each with the character it stands for and the same value in hex, octal and binary. Find the code in the first column and read across; the row is the whole conversion. Codes 0 to 31 and 127 have no glyph, so the Char column shows their short name instead. This page writes one unpadded decimal ASCII code (0–127) per character; non-ASCII flagged 'not ASCII'. This page shows the rows you need; ASCII code chart (decimal, hex, octal, binary) carries all 128.

Worked Example: A to ASCII Code

One code value, taken from the table and written out in full. This is the same working the converter shows when you turn on "show steps".

Take the first character, A. Its row in the ASCII table is 65. Decimal codes are written as they are, with no padding: 65.

The codes are joined in the order the characters were typed, one space apart. A character with no row, such as é, is named in the error line rather than guessed at.

Check it in reverse

Read it back and you arrive where you started: code 65 is the letter A. The table is a two-way lookup, not a calculation, so no rounding or padding can change the answer. To verify the result by hand, convert the ASCII codes back to characters and compare it with the value you started from.

Worked examples: text to ASCII code

Each example gives the value first, then the working. Click a value to load it in the converter.

Common phrases people convert: load one of these into the decoder

Every example above reverses exactly — read the same codes back as characters.

What Changes the Code Output?

Values above 127

A value above 127 is out of range and the converter says so rather than guessing. Codes 128–255 belong to extended sets such as Latin-1, not to ASCII, so there is no single right character for them. Every code that is in range is listed in the ASCII table this converter reads from.

Which base the code is written in

The same code can be typed as decimal, hex, octal or binary, and the base selector says which one you mean. 65, 41, 101 and 01000001 are all the letter A. Pick the wrong base and you look up a different row.

Control codes and printable codes

Codes 32 to 126 are printable characters; 0–31 and 127 are control codes. A control code has no glyph, so the table shows its short name instead — 10 is LF, 13 is CR. Converting one is valid; displaying one is not.

One code or a list

Several codes separated by spaces, commas or new lines convert as a list, in order, and each keeps its own row. The separator is a display choice and does not change any value.

Text to ASCII Code in Code

The same rule in one line. Both take a string and return one decimal code per character.

Python: ' '.join(str(b) for b in s.encode('ascii'))

JavaScript: [...new TextEncoder().encode(s)].join(' ')

Common Mistakes

• Typing a code instead of text. Here 72 is read as the characters 7 and 2, codes 55 and 50, not as code 72. To turn a whole message into bits instead, use a binary translator for words and names.
• Reading a code in the wrong base. 41 is A in hex and ) in decimal.
• Expecting a character above 127. That value is outside ASCII and the answer depends on which extended set is meant.
• Joining decimal codes with no separator. 72105 is one number, not 72 and 105, because decimal codes have no fixed width.

Frequently Asked Questions

Related Conversions

• Text also converts to binary by the same lookup — a binary translator for words and names.
• Text also converts to hex by the same lookup — text to hex (UTF-8).
• Text also converts to octal by the same lookup — text to octal ASCII codes.
• If your input is binary rather than text, find the ASCII code for an 8-bit value instead.
• If your input is hex rather than text, convert hex bytes to ASCII codes instead.
• If your input is ASCII codes rather than text, convert an ASCII code (0–127) to binary instead.

The rest of the family sits on the whole binary and text converter set.