Encoding · Decoding
ASCII Converter online
Convert ASCII characters to numeric representations and clearly validate the standard 0–127 range.
ASCII Converter tool
Character-by-character detail
Quick analysis
Analyze character
Check the codes of one or more ASCII characters without changing the main conversion.
Quick guide
What is ASCII?
ASCII is an encoding standard with 128 values, from 0 to 127. Each standard character has decimal, hexadecimal, octal and binary representations.
Text to ASCII decimal
Each character becomes its decimal value. For example, A is 65 and Hello is 72 101 108 108 111.
ASCII hexadecimal
Hexadecimal is a compact way to write ASCII bytes: A is 41 or 0x41.
ASCII binary
Binary shows each byte in eight bits. A is 01000001.
Printable and control characters
Values 32 to 126 are printable. Values 0 to 31 and 127 are controls, shown with labels such as [TAB], [LF] and [DEL].
ASCII versus Unicode
ASCII contains only 128 values. Unicode covers many more characters: ñ, €, emojis and non-Latin alphabets are not standard ASCII.
Reference
ASCII table
Browse standard values from 0 to 127, including control codes.
| Decimal | Hex | Octal | Binary | Character |
|---|
Frequently asked questions
Questions about ASCII
How do I convert text to ASCII?
Choose a Text conversion and select Convert. Each character becomes its corresponding code.
What is the ASCII code for a letter?
Enter the letter in Analyze character to see decimal, hexadecimal, octal and binary values.
How do I convert ASCII decimal to text?
Choose Decimal → Text and separate values with spaces, commas or new lines.
How do I convert ASCII to hexadecimal?
Choose Text → Hexadecimal. You can add the 0x prefix and choose a separator.
How do I convert ASCII to binary?
Choose Text → Binary. Each value uses an 8-bit block by default.
What is the ASCII range?
Standard ASCII runs from 0 to 127; values 32 to 126 are printable.
What are ASCII control codes?
They are non-printable values for functions such as TAB, LF and carriage return. The tool displays safe labels.
Is ñ part of ASCII?
No. ñ belongs to Unicode and is outside standard ASCII from 0 to 127.
What is the difference between ASCII and Unicode?
ASCII has 128 values; Unicode includes a much larger collection of characters and alphabets.
Is entered data stored?
No. Conversion is processed locally and content is not saved.
