ASCII to Decimal

Convert ASCII and Unicode characters into decimal numbers online. Choose between character code points or UTF-8 byte values with support for octal, hex, and binary bases.

Private • In-browser processing • Zero server uploads

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How to Use ASCII to Decimal

1
Enter Characters
Type or paste your text, symbols, or words into the input field.
2
Configure Number Format
Select Decimal, Hex, Octal, or Binary, and choose between code points or UTF-8 bytes.
3
Copy Decimal Numbers
The converted numerical values are displayed immediately for instant export.

Key Features

Flexible Value Modes
Convert characters to Unicode code points (e.g. A = 65, 🚀 = 128640) or UTF-8 byte numbers (0–255).
Multiple Bases
Output in Decimal (base 10), Hexadecimal (base 16), Octal (base 8), or Binary (base 2).
Delimiter Options
Format with spaces, commas, or line breaks for easy copy-pasting into code arrays.
Comprehensive Unicode Reach
Supports ASCII, Latin-1, Asian scripts, and modern emojis.

Common Use Cases

  • Creating character code arrays for C, JavaScript, Python, and Java programs.
  • Debugging ASCII and Unicode character codes in communication protocols.
  • Encoding text strings for microcontroller displays and embedded systems.
  • Educational study of ASCII and UTF-8 digital character encoding tables.

Frequently Asked Questions

Code points represent the unique integer assigned to each character in the Unicode specification (e.g., 🚀 is code point 128640). 'Bytes' represents the UTF-8 encoded byte numbers (240 159 154 128).

Yes! Use our companion tool 'Decimal to ASCII' to reverse the decimal numbers back into standard readable text.

Yes! Every character including spaces (ASCII 32) and newlines (ASCII 10) is converted to its exact numeric code.

Decimal to ASCII
Convert decimal values to their corresponding ASCII characters.
Bytes to ASCII
Interpret a sequence of byte values as ASCII text, filtering non-printable chars.
Hex to Text
Convert hexadecimal strings to readable ASCII or UTF-8 text.
UTF8 to Hexadecimal
Convert UTF-8 encoded text to its hexadecimal byte representation.
Unicode to UTF-8
Convert Unicode code points (U+XXXX) to UTF-8 byte sequences and vice versa.