ASCII to Decimal Converter

Type or paste any text and get a space-separated list of the decimal character codes behind every letter, digit and symbol.

What is the ASCII to Decimal Converter?

The ASCII to Decimal Converter shows the numeric code — the decimal value each byte of text actually is — behind a piece of text. Standard ASCII characters (letters, digits, punctuation) map to a single code from 0 to 127; other Unicode characters are shown as the decimal values of their individual UTF-8 bytes.

How It Works

Each line of text is encoded to UTF-8 bytes, and every byte is written out as its plain decimal value (0-255), separated by spaces. For everyday English text, this decimal list matches the classic ASCII table you'd find in a reference chart.

Real-World Use Case

Writing a simple cipher, checksum, or parsing exercise in a programming class often requires knowing the exact numeric code for each character in a string — converting a sample string here gives you the list to check your own code's output against.

Frequently Asked Questions

Is this the same as the classic ASCII table?

For standard English letters, digits and punctuation, yes — those all sit in the 0-127 range that the original ASCII table defines. Other characters use UTF-8 byte values above that range.

Does it include the code for a space character?

Yes, a space becomes 32 in the decimal list, right alongside the codes for the letters around it — nothing is skipped or trimmed.

Can I convert multiple lines of text separately?

Yes. Each line is treated as its own message, and its character codes appear on their own line in the result.

To turn a decimal byte list back into text, use the Bytes to ASCII Converter — it decodes exactly this kind of output. Looking for the reverse? Try the Bytes to ASCII Converter →