Offline ASCII Encoder & Decoder

Convert standard 7-bit ASCII locally. No input or imported export leaves your browser.

Text → ASCII

Encode plain text in common CTF formats.

Plain ASCII text

Output format

Separator

Encoded values

ASCII → Text

Auto-detect or select the numeric representation.

ASCII values

Input format

Inspect a dCode CSV Export

Choose an exported semicolon-delimited CSV such as export-dcode-2026-08-12-05-56-52.csv. Imported rows are displayed locally and are never uploaded.

No export selected.

Full 7-bit ASCII Table

128 codes

Decimal	Octal	Hex	Binary	Character

Behavioral reference and sample export: ASCII Code on dCode.fr, retrieved 2026-08-12. This local implementation uses the public 7-bit ASCII standard and independent code; it does not copy dCode’s converter source.