Bytes to ASCII Converter

Paste decimal byte values, separated by spaces or commas, like 72, 101, 108, 108, 111, and read the ASCII text they represent.

What is the Bytes to ASCII Converter?

The Bytes to ASCII Converter decodes a list of decimal byte values (each from 0 to 255) back into readable text. It's the direct counterpart to a decimal character-code list — paste the numbers such a list produces, or any decimal byte list from elsewhere, and get the original text back.

How It Works

Each line is split on spaces or commas into individual numbers. Every number is checked to be a whole number from 0 to 255 — the valid range for a single byte — and the resulting byte sequence is decoded as UTF-8 text.

Real-World Use Case

A data export, log file or programming exercise that stores text as a raw array of byte values, like [72, 101, 108, 108, 111], can be read back to plain English instantly here instead of manually looking up each code in a table.

Frequently Asked Questions

What happens if a value is above 255?

That entry is flagged as out of range with an inline error, since a single byte can only hold a value from 0 to 255 — anything higher can't be a valid byte.

Can I mix spaces and commas as separators?

Yes, the converter splits on any combination of spaces and commas, so 72,101, 108 108,111 parses the same as a cleanly formatted list.

Can I decode more than one list of bytes at once?

Yes. Put each byte list on its own line, and every line decodes to its own line of text in the result.

To go the other direction — text into decimal byte codes — use the ASCII to Decimal Converter. Looking for the reverse? Try the ASCII to Decimal Converter →