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ASCII Encoder / Decoder

Encode or decode ASCII values.

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Encode or decode ASCII values.

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Tool guide

ASCII Encoder / Decoder Online

Convert text into decimal ASCII codes or decode ASCII codes back into text. It supports space, comma, and newline separated output for simple developer workflows.

Steps

How it works

  • Choose text-to-ASCII or ASCII-to-text.
  • Pick a separator when encoding.
  • Convert the value.
  • Copy or download the result.
Highlights

Key features

  • Uses decimal ASCII codes.
  • Supports space, comma, or newline separators.
  • Validates code ranges.
  • Clear errors for non-ASCII characters.
Use cases

Common uses

  • Inspect basic character codes.
  • Create ASCII examples.
  • Decode simple code sequences.
Notes

Limitations to know

  • Only standard ASCII range 0-127 is supported.
  • Unicode characters outside ASCII are rejected.
  • Binary file workflows are not included.
FAQ

Frequently asked questions

3 answers

Why is a character rejected?

The character is outside the standard ASCII range. Use Unicode Encoder / Decoder for broader character sets.

How do I decode ASCII codes?

Choose ASCII to Text and paste decimal codes separated by spaces, commas, or newlines.

Can I change the separator?

Yes. Separator options are available when encoding text to ASCII.