Martian text (火星文) converter. Encode normal text into playful look-alike glyphs and decode it back, with a direction toggle and one-click copy. Deterministic, browser-only, no tracking.
Martian Text Converter (火星文)
How to use
Pick a direction
Use the toggle above: "Normal → Martian" encodes ordinary text into 火星文; "Martian → Normal" best-effort decodes 火星文 back to readable text.
Type or paste text
Enter text in the left box. Chinese characters, Latin letters, digits and punctuation are all supported. The output updates live as you type each character.
Read the live output
The right box shows the converted result instantly and counts the characters. Conversion is character-by-character — any character with no martian counterpart is kept unchanged.
Copy in one click
Hit "Copy output" to send the result to your clipboard, ready to paste into chats, social posts, or a username. Everything runs locally in your browser — no text is uploaded.
What Is Martian Text (火星文)? From Net Slang to Nostalgia
"Martian text" — 火星文 (huǒxīngwén) — is an informal writing game that took off across Taiwanese, Hong Kong, and mainland Chinese-language internet in the early 2000s. The core trick is to replace ordinary Chinese characters, letters, and punctuation with look-alike symbols that are not the original character — writing 的 as 菂, 是 as 媞, 你 as 沵, 我 as 莪. At a glance you can still just about read it; look closely and it is "wrong" everywhere. People joked that only a Martian could read it, and the name stuck. It was once everywhere — forum posts, instant-messenger nicknames, and personal signatures — a piece of a whole generation's online youth.
How martian text is built
There is no single standard for 火星文, but the common substitution tricks fall into a few groups. The first is look-alike replacement: swapping a common character for a rare or variant character with the same radical or a similar outline — 好→恏, 爱→愛 (borrowing the traditional form), 不→卟. The second is symbol and full-width conversion: turning half-width Latin letters, digits, and punctuation into full-width or decorated forms so the whole line simply looks "different". The third is splitting and remixing: breaking one character into two radicals, or substituting a homophone. This tool ships a built-in look-alike substitution table covering common Chinese characters, Latin letters, digits, and punctuation, using deterministic character-by-character replacement — the same input always yields the same output, with no random numbers and no AI.
One caveat: because several normal characters can map to the same martian glyph, the "Martian → Normal" direction is best-effort. The tool reverses to the first source character registered in the table, which recovers most text, but a many-to-one collision may not round-trip perfectly. That is an inherent, lossy property of 火星文 itself, not a bug in the tool.
"Martian text isn't meant to be unreadable — it's meant to be readable but odd. That oddness is the whole point."
What martian text is good for today
Its heyday is past, but 火星文 still has plenty of playful uses. Many people use it to craft distinctive nicknames and social signatures, making an ID stand out among a sea of plain names. Others treat it as a kind of lightweight, just-for-fun "cipher", dropping a line in a public post that only fellow fans will bother to decode (note: this is entertainment only and must never be used for anything that needs real secrecy). For older netizens it is above all a nostalgia symbol — one glance brings back the days of haunting forums and decorating blog spaces. This tool runs both encoding and decoding entirely in your own browser, uploading and storing nothing, so you can safely treat it as a pure text toy: convert when you like, decode when you like.
10 Facts about Martian Text (火星文)
The term "martian text" comes from the quip "this must be writing only a Martian could read." The glyphs look familiar yet are deliberately "wrong" — recognisable but alien.
Martian text exploded among early-2000s Taiwanese teens online, then spread to the mainland and Hong Kong via messengers and forums — a generational marker of internet youth.
There is no official standard for martian text; every circle and every person may "spell" differently — which is exactly its charm as a subculture.
The most common technique is look-alike replacement: swapping a common character for a rare or variant one sharing a radical — e.g. 好→恏, 不→卟.
Full-width letters and punctuation are martian text's "cheap special effect": the same letters in full-width form instantly make a line look visually "off".
In 2006, reports of Taiwanese students answering exam questions in martian text sparked public debate, briefly turning 火星文 into a mainstream news buzzword.
Martian text often borrows traditional characters, Japanese kanji, and obscure variants as raw material, so one passage may mix several character origins.
Martian text is lossy encoding: several normal characters can share one martian glyph, so decoding is best-effort and cannot be guaranteed exact.
Martian text is not encryption. It is just glyph substitution — anyone with the mapping table can reverse it easily, so never use it to protect real secrets.
These days martian text resurfaces mostly as a nostalgia meme — used in nicknames, image macros, and retro-styled social content as a light-hearted cultural symbol.
Frequently Asked Questions
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Martian text is an internet writing game that replaces normal characters, letters, and punctuation with look-alike symbols that are not the originals (你→沵, 好→恏), making text look familiar yet odd. It has no fixed standard, peaked in the early-2000s Chinese-language internet, and was common in nicknames and signatures.
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First pick a direction with the toggle: "Normal → Martian" encodes, "Martian → Normal" decodes. Then type or paste text in the left box and the right box updates live. Finally, hit "Copy output" to grab the result.
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Because martian text is lossy: sometimes several normal characters map to the same martian glyph. On decode, the tool reverses to the first source character registered in the table, so a many-to-one case may resolve to a different candidate. That is a property of 火星文 itself, not a tool error.
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The table covers common Chinese characters, upper- and lower-case Latin letters, Arabic digits, and frequent punctuation. Any character without a martian counterpart (characters outside the table, emoji, line breaks, etc.) is passed through unchanged and never corrupted.
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Neither. Conversion is purely deterministic table lookup, performed entirely in your browser. No AI, no network requests, no randomness — the same input always produces the same output.
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No. Everything you type lives only in the current browser page — never uploaded, logged, or stored. It disappears when you refresh or close the page. RECATOOLS enforces zero-tracking + zero-storage.
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No. Martian text is just public glyph substitution — anyone with the mapping table can reverse it trivially, so it offers no security. It is for entertainment only and must never be used for passwords, privacy, or anything that needs real secrecy.
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Absolutely — that's one of its most common uses. Note that some platforms restrict special characters or fail to match them in search and @mentions, so check that it displays correctly before posting. A few rare martian glyphs may also show as tofu boxes on older devices.
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Because those characters aren't in the built-in table. There is no standard covering every Chinese character, so this tool includes a curated set of common characters plus letters, digits, and punctuation. Anything outside the table is kept as-is, which preserves your text structure (line breaks, special symbols).
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Yes. The tool is fully deterministic: conversion follows a fixed mapping table character by character, with no randomness and no external calls. Convert the same text any time, on any device, and the result is identical.
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