Leet Speak (1337) Text Converter

Leet Speak (1337) Text Converter

Convert any plain text to leet speak (also known as 1337 or hackspeak) in your browser, with three intensity levels and a reverse decoder. The tool swaps letters for numbers and symbols using deterministic lookup tables, so the same input always produces the same output unless you opt in to randomization.

Comment utiliser

1. Paste or type text into the input field.
2. Sélectionner Text to Leet to encode, or Leet to Text to decode.
3. Choose a leet level: Basic (numbers only), Moyen (numbers and symbols), or Extreme (full symbol set with multi-character glyphs).
4. Optionally enable Random uppercase for mixed-case output or Randomize character variants to pick a different substitution each time.
5. Copy the result with the copy button or download it as a text file.

Caractéristiques

• Three leet levels – Basic, Medium, and Extreme intensity covering classic number swaps through full symbol replacements.
• Bidirectionnel – Encode plain text to leet or decode leet back to readable text.
• Randomization options – Toggle random uppercase and random character variants for stylistic variety.
• Aperçu en temps réel – Output updates as you type, no submit button required.
• Côté client uniquement – Text never leaves your browser; processing happens locally for full privacy.
• Copier et télécharger – One-click copy to clipboard or download the result as a .txt file.