1337
Leetspeak (1337) Converter
Convert text into leetspeak, swapping letters for look-alike numbers and symbols.
Free · No sign-up · Updated August 2026
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1337 5p34k
Leetspeak replaces letters with look-alike numbers and symbols (e→3, a→4, o→0). Basic swaps common letters; advanced swaps more.
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Frequently asked questions
What is leetspeak?＋
Leetspeak (or 1337) replaces letters with look-alike numbers and symbols — e→3, a→4, o→0, s→5 — an internet style dating back to early online communities.
What's the difference between basic and advanced?＋
Basic swaps the most common letters; advanced substitutes more letters (b→8, g→6, z→2, l→1) for a more heavily 'leet' look.