Leetspeak Converter
NewConvert plain text into leetspeak (1337 5p34k) with a configurable substitution intensity.
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"Basic" only substitutes the most common letters (a→4, e→3, i→1, o→0, s→5, t→7). "Full" adds more aggressive substitutions for b, g, l, and z. This is a one-way stylistic transform — there's no reliable way to convert leetspeak back to plain text automatically, since the substitutions are ambiguous (e.g. "1" could mean "i" or "l").
Frequently Asked Questions
What's the difference between Basic and Full intensity?
Basic only substitutes the six most universally recognized leetspeak letters (a→4, e→3, i→1, o→0, s→5, t→7). Full adds four more aggressive substitutions (b→8, g→9, l→1, z→2), which makes text harder to read but more "leet."
Can this convert leetspeak back into normal text?
No — this is intentionally one-directional. Leetspeak substitutions are ambiguous (a "1" could have originally been an "i" or an "l", a "3" could be an "e"), so there's no reliable way to reverse it automatically without guessing.
Does it preserve capitalization and punctuation?
Punctuation, spaces, and digits are left completely untouched. Capitalization of letters doesn't change the substitution itself (a capital "A" and lowercase "a" both become "4") since leetspeak digit substitutions don't have a case.
Why do "l" and "i" both map to "1" in Full mode?
That's a real ambiguity in actual leetspeak usage — both letters are commonly represented by the digit "1" in practice, and which one a human reader infers usually depends on context. This tool doesn't try to disambiguate; it applies the same substitution table consistently.
Is there a keyboard shortcut or button to copy the result?
Yes — the Copy button next to the output copies the current leetspeak result to your clipboard.