Text to Leet Converter
Paste normal text, get 1337 leetspeak. Free, instant, and entirely in your browser.
Everything runs locally in your browser. Your text is never uploaded.What Is Text to Leet?
Text to leet is the process of converting ordinary English text into leetspeak—the stylized writing system also known as 1337 or l33t. In leetspeak, letters are replaced by numbers and symbols that visually resemble them: a becomes 4, e becomes 3, o becomes 0, and so on. The name comes from elite, the label early adopters gave themselves on 1980s bulletin board systems and in hacker forums, where writing with substitutions signaled insider status and slipped past simple word filters.
Today, converting text to leet is mostly recreational. Gamers use it to style usernames and clan tags, developers hide it in Easter eggs and inside jokes, and social media users reach for it when they want a handle that looks distinctive. A text to leet converter automates the substitution rules so you never have to memorize the alphabet: type normal text, and the equivalent 1337 string appears immediately, ready to copy anywhere.
How to Use This Text to Leet Converter
- Type or paste your normal text into the input box on the left.
- The 1337 output appears instantly on the right—conversion happens as you type, character by character.
- Pick a mode: Light for subtle, readable results; Classic for the standard 1337 alphabet; Extreme for heavy ASCII-art stylization.
- Click Copy result and paste the converted text wherever you need it.
There is no account, no upload, and no waiting. Everything runs in your browser with JavaScript, so the converter even works if you disconnect from the internet after the page loads. Need the reverse direction? Hit ⇄ Swap, or use the dedicated Leet Speak Decoder.
Text to Leet Examples
All examples below use Classic mode, the default. Switch the tool to Extreme to see multi-character replacements. Click any generated card to load it into the converter.
hello world→h3110 w0r1dpassword→p455w0rdgood game→600d 64m3
Why Convert Text to Leet?
The most common reason is distinctive naming: a plain handle like shadow may be taken everywhere, while 5h4d0w often is not. Leet styling also adds personality to chat messages, forum signatures, and gamer tags, and it works as playful obfuscation for spoilers or punchlines you don't want readable at a glance.
Keep in mind that leet is a writing style, not encryption—anyone can reverse it with a decoder, so never rely on it to hide sensitive information. Some platforms also restrict symbols in usernames, so test your converted handle before committing to it.
Character Mapping Table
The complete rule set for the current mode. Editing a cell updates every conversion immediately. These are the rules used by this site, not a universal standard.
View & edit mapping
| Letter | Becomes |
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FAQ
What does text to leet mean?
Text to leet means converting ordinary English text into leetspeak, the writing style that swaps letters for similar-looking numbers and symbols. For example, text becomes 73x7 and leet becomes 1337. The substitution follows a fixed character mapping, so the same input always produces the same output.
Which mode should I use for text to leet conversion?
Use Light if you want output that stays easy to read, Classic for the standard 1337 alphabet that most people recognize as leetspeak, and Extreme if you want maximum stylization with multi-character ASCII art. Classic is the default and the right choice for most usernames and messages.
Is my text uploaded or stored?
No. All conversion happens locally in your browser. Your text is never sent to a server and is not stored. You can verify this in your browser's network tab while typing—no requests are made as you type.