Text / Fun
Leet Speak Converter (1337 Translator)
Convert text to leetspeak, from light digit swaps like 3 for e to heavy symbol letters like |-| for h, and translate leet back into plain text.
Leet Speak Converter (1337 Translator): Each letter with a leet form is swapped as you type: light uses the classic six (a 4, e 3, i 1, o 0, s 5, t 7), so Leet speak becomes L337 5p34k; medium adds b, g, l, and z; heavy draws letters from symbols. Reading back turns the digits and symbols of light and medium leet into letters again. Runs 100% locally in your browser with zero server file uploads.
- Category
- Text tools
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- In your browser
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- Free · no sign-up
- Availability
- Ready to use
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Result
L337 5p34k 15 3l173
Light swaps the classic letters for digits (a 4, e 3, i 1, o 0, s 5, t 7); medium adds b 8, g 6, l 1, and z 2; heavy builds letters from symbols, such as |-| for h. Reading leet back is a best guess, because 1 can mean i or l.
Levels
Light: a 4, e 3, i 1, o 0, s 5, t 7. Medium also uses b 8, g 6, l 1, and z 2. Heavy builds every letter from symbols, such as /-\ for a, |\| for n, and \/\/ for w, which is much harder to read and to undo.
Password myth
Leet substitutions are among the first rules password-cracking tools apply, so they add almost no strength. A password generator gives far more for the same length.
How to use it
- Type or paste the text.
- Choose light, medium, or heavy leet, or switch to reading leet back.
- Copy the result.
Privacy & limitations
Converted in your browser.
Related tools
Frequently asked questions
What does 1337 mean?
It spells leet, short for elite, in the number substitutions that early hackers and gamers used on bulletin boards in the 1980s.
Is leet a good way to make passwords?
No: password crackers try these swaps automatically, so P4ssw0rd is barely stronger than Password. Use a long random password instead.
Why does reading it back give odd spellings?
Some digits stand for more than one letter: 1 can be i or l, so 1337 reads back as ieet.
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