Leetspeak Converter

Convert text to and from 1337 (leet) speak.

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Files are processed in your browser, never uploaded. The site downloads code and assets to run the tools. No accounts or trackers.

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output

About this tool

Convert text to and from leet (1337) speak using common letter substitutions, all in your browser.

Which substitutions are used?

Common ones such as a to 4, e to 3, i to 1, o to 0, s to 5, and t to 7.

Is from-leet perfect?

It reverses the common digit substitutions back to letters, but very heavily styled leet may not round-trip exactly.