ASCII text uses character codes for letters, numbers, spaces, and symbols. Standard ASCII has 128 characters, numbered from 0 to 127, and each character has a decimal value.
The decimal number system uses base 10 and the digits 0 through 9. ASCII gives each character a number, so a converter can show the matching decimal value for each character.
Our ASCII to Decimal Converter quickly converts ASCII text into decimal values. Enter your text, convert it, and copy the result for your notes, homework, or coding tasks.
Type or paste the ASCII text you want to convert.
Get the decimal value instantly from your ASCII text.
Copy the converted decimal value for future use.
Type or paste the ASCII text you want to convert.
Get the decimal value instantly from your ASCII text.
Copy the converted decimal value for future use.
ASCII already assigns each character a decimal code, so you can convert text by checking each character in an ASCII table.
Formula
Step by step Guide
Practical Example
For the word "CAT":
C = 67
A = 65
T = 84
So, "CAT" becomes in decimal. For "A B", the result becomes , because the space has ASCII value 32.
Character | Decimal | Hex |
|---|---|---|
Space | 32 | 20 |
! | 33 | 21 |
0 | 48 | 30 |
1 | 49 | 31 |
A | 65 | 41 |
B | 66 | 42 |
C | 67 | 43 |
D | 68 | 44 |
X | 88 | 58 |
Y | 89 | 59 |
Z | 90 | 5A |
a | 97 | 61 |
b | 98 | 62 |
c | 99 | 63 |
z | 122 | 7A |
Note: ASCII uses decimal codes from 0 to 127. Hex values provide another way to represent the same character codes.
Text to decimal conversion can fail with unsupported characters, spaces, or symbols. Simple checks keep every decimal value correct and preserve input.
Non printable ASCII characters include controls such as line breaks and tabs. Check their decimal codes before using the converted result.
Unicode includes far more characters than standard ASCII. Accented letters and emojis may need Unicode code points instead of ASCII decimal values.
Spaces and symbols have their own ASCII codes. Keep them during conversion, or your decimal output may not match the original text.
Convert characters from left to right. Keeping the same order makes the decimal output match the original ASCII text every time.
Good text to decimal conversion starts with correct encoding, testing, and clear handling of unusual characters. Simple checks help prevent errors.
Use standard ASCII when input stays within 0 to 127. Check the encoding before conversion to avoid incorrect character values.
Check spaces, punctuation, control characters, and unsupported Unicode characters. These cases can change output or need a different converter.
Programming languages often provide built-in character functions. Python uses ord() to get a character's numeric code from text.
Test short words, spaces, numbers, and symbols before trusting larger results. Compare outputs with a reliable ASCII reference table.
For long text, process characters efficiently and avoid repeated work. Simple loops can handle large ASCII strings with little effort.
Record the expected input range, output format, and special cases. Clear notes help others understand and maintain the conversion process.
These answers explain common ASCII and decimal questions, including character values, spaces, Unicode, manual conversion, and reverse conversion.