Ascii Text to Hexadecimal Converter

In order to use this ascii text to hexadecimal converter tool, type an ascii value like "awesome" to get "61 77 65 73 6f 6d 65" and then hit the Convert button. This is the way you can convert up to 128 ascii text to hexadecimal characters.

ASCII Text

ASCII (American Standard Code for Information Interchange) is one of the most common character encoding standards. Originally developed from telegraphic codes, ASCII is now widely used in electronic communication for conveying text.

As computers can only understand numbers, the ASCII code represents text (characters) with different numbers. This is how a computer ‘understands’ and shows text.

The original ASCII is based on 128 characters. These are the 26 letters of the English alphabet (both in lower and upper cases); numbers from 0 to 9; and various punctuation marks. In the ASCII code, each of these characters are assigned a decimal number from 0 to 127. For example, the ASCII representation of upper case A is 65 and the lower case a is 97.

Hexadecimal System (Hex System)

The hexadecimal system (shortly hex), uses the number 16 as its base (radix). As a base-16 numeral system, it uses 16 symbols. These are the 10 decimal digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) and the first six letters of the English alphabet (A, B, C, D, E, F). The letters are used because of the need to represent the values 10, 11, 12, 13, 14 and 15 each in one single symbol.

Hex is used in mathematics and information technologies as a more friendly way to represent binary numbers. Each hex digit represents four binary digits; therefore, hex is a language to write binary in an abbreviated form.

Four binary digits (also called nibbles) make up half a byte. This means one byte can carry binary values from 0000 0000 to 1111 1111. In hex, these can be represented in a friendlier fashion, ranging from 00 to FF.

In html programming, colors can be represented by a 6-digit hexadecimal number: FFFFFF represents white whereas 000000 represents black.

How to Convert ASCII Text to Hexadecimal

The most common way to convert ASCII text to hexadecimal numbers manually is to first look up the decimal number for the letter in the ASCII table. Then, convert this decimal value to its hexadecimal equivalent.

Also you might find a conversion table that directly converts ASCII to hexadecimal.

Example:

hello = (68 65 6C 6C 6F)16

Lower case h is given the decimal number 104 in the ASCII table.
(104)10 = (68)16
104 ÷ 16 = 6.5 (Remainder 8)
6 ÷ 16 = 0.375 (Remainder 6)

e is 101, thus
(101)10 = (65)16
101 ÷ 16 = 6.3125 (Remainder 5)
6 ÷ 16 = 0.375 (Remainder 6)

l is 108, thus 
(108)10 = (6C)16
108 ÷ 16 = 6.75 (Remainder 12, C in hex)
6 ÷ 16 = 0.375 (Remainder 6)

o is 111, thus
(111)10 = (6F)16
111 ÷ 16 = 6.9375  (Remainder 15, F in hex)
6 ÷ 16 = 0.375 (Remainder 6)

Therefore, hello = (68 65 6C 6C 6F)16

Ascii to Hexadecimal Conversion Table

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