Productive ToolboxLeetspeak (1337) Converter
Translate text to 1337 leetspeak at three levels, from simple number swaps to full symbol art, or decode leet back to plain text.
Text Input
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Customization
1337 Output
1337 5p34k 15 31173
Leetspeak Reference
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How Leetspeak Works
Leetspeak replaces letters with numbers and symbols that look like them. It grew out of 1980s bulletin board systems, where users swapped letters to show they were part of the “elite” and to slip past simple word filters, and it spread through hacker, gaming and early internet culture.
Light: Hello World → H3ll0 W0rld
Standard: Hello World → H3110 W0r1d
Hardcore: Hello World → #3110 \/\/0|21|)
The lighter the style, the easier it is to read. Light leet only swaps the vowels and a few consonants that already look like digits; hardcore builds every letter from symbols, which looks striking but can be hard to read without practice.
Leetspeak Alphabet Chart
| Letter | Light | Standard | Hardcore | Other forms |
|---|---|---|---|---|
| A | 4 | 4 | 4 | @ /-\ /\ |
| B | – | 8 | 8 | |3 13 |
| C | – | – | ( | < © [ |
| D | – | – | |) | |] cl |
| E | 3 | 3 | 3 | € & |
| F | – | – | |= | ph |# |
| G | – | 6 | 6 | 9 & |
| H | – | – | # | |-| ]-[ |
| I | 1 | 1 | 1 | ! | |
| J | – | – | _| | _/ |
| K | – | – | |< | |{ |
| L | – | 1 | 1 | |_ £ |
| M | – | – | /\/\ | |\/| ^^ |
| N | – | – | |\| | /\/ ^/ |
| O | 0 | 0 | 0 | () [] |
| P | – | – | |> | |* |o |
| Q | – | – | 0_ | (,) |
| R | – | – | |2 | 12 |? |
| S | 5 | 5 | 5 | $ z |
| T | 7 | 7 | 7 | + † |
| U | – | – | |_| | (_) |
| V | – | – | \/ | – |
| W | – | – | \/\/ | vv \^/ |
| X | – | – | >< | }{ |
| Y | – | – | `/ | j |
| Z | – | 2 | 2 | 7_ |
“–” means the letter is left as it is in that style. Random mode also uses @ for A, € for E, ! for I, () for O, $ for S and + for T.
Common Leet Words
| n00b / noob | A beginner, often used teasingly |
| pwned | Beaten or taken over; from a typo of 'owned' |
| w00t | An exclamation of joy |
| h4x0r | Hacker |
| teh | 'The', from a common typo |
| l33t / 1337 | Elite, highly skilled |
How to Use the Leetspeak Translator
- 1Type your text: Enter the words you want to translate; the result updates as you type.
- 2Pick a style: Choose light (a few number swaps: H4ck3r), standard (numbers for ten letters) or hardcore (symbols for every letter: #4(|<3|2), or a gamer, hacker or meme preset.
- 3Add variety if you like: Turn on random mode to mix alternatives such as @ or 4 for A, or remove spaces for a denser look.
- 4Decode or copy: Switch to decode mode to turn leet back into readable text, then copy the result or download it as a TXT file.
Frequently Asked Questions
What is leetspeak?
Leetspeak, or 1337, is a way of writing English that swaps letters for numbers and symbols that look alike, such as 3 for E, 4 for A and 7 for T. The name comes from 'elite', written 31337 or 1337, and it started on 1980s bulletin board systems and hacker and gaming communities.
What does 1337 mean?
1337 is 'leet' spelled with numbers (1 = L, 3 = E, 7 = T), short for 'elite'. It describes someone skilled, originally a hacker or gamer, and has since become a playful internet in-joke.
What is the leetspeak alphabet?
There is no single official version. The most common number swaps are A = 4, B = 8, E = 3, G = 6, I = 1, L = 1, O = 0, S = 5, T = 7 and Z = 2. Advanced leet uses symbol groups for every letter, such as |-| for H, |\/| or /\/\ for M and \/\/ for W; the chart on this page lists them.
Why can't leetspeak always be decoded perfectly?
Several letters share the same symbol: 1 can mean I or L, and digits in the original text (like 2026) look the same as letter swaps. The decoder reads 1 as i and turns every recognised symbol into a letter, so check names and numbers by eye.
Is leetspeak good for passwords?
Not on its own. Password crackers try common substitutions such as P@55w0rd automatically, so they add little strength. A long passphrase of random words, or a password manager, protects you far better.
Where is leetspeak used today?
Mostly for fun and style: gamer tags, usernames, jokes about hackers, retro internet themes and puzzles. Some words from leet culture, like pwned, n00b and w00t, have passed into everyday gaming slang.
Is my data private?
Yes. We do not collect or store what you enter.
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