1337 / Leet Speak

Convert text to leet (a=4, e=3, i=1, o=0, s=5, ...).

Tool Text Codecs Updated Apr 20, 2026
X Facebook LinkedIn Reddit Email
How to Use
  1. Type or paste your input on the left.
  2. The result appears live on the right - no buttons needed.
  3. Copy the output with one click.
Input
Output
More codecs: base32 encode base32 decode base58 encode base58 decode base85 encode base85 decode

About this codec

Convert text to leet (a=4, e=3, i=1, o=0, s=5, ...).

Frequently Asked Questions

Does this leave my browser?

No - the conversion runs entirely in JavaScript on this page.

Last updated: