Explainer
Tanglish, Thanglish, Transliteration: What's the Difference?
Search around and you'll see "Tanglish," "Thanglish," and "transliteration" used almost interchangeably — sometimes even in the same sentence. Here's what actually separates them, and the one distinction that genuinely matters.
Tanglish vs Thanglish: just two spellings
These are the same word. Tanglish is the shorter, more common spelling; Thanglish adds the "h" to more closely echo how "Tamil" is pronounced. Neither is more correct — it's the same split you see with "Tamil" vs "Thamizh." Both refer to the identical practice: writing Tamil using the English (Latin) alphabet.
If you're searching for a converter, tool, or guide, it's worth trying both spellings — some sites and tools only optimize for one.
Where "transliteration" fits in
Transliteration is the general linguistic term for converting text from one script to another while preserving pronunciation — regardless of language. Tanglish/Thanglish is one specific example of transliteration: Tamil sounds, written in Latin script. The same concept applies to Hinglish (Hindi in English letters), Manglish (Malayalam), Romaji (Japanese), and Pinyin (Mandarin).
So: Tanglish and Thanglish are the informal, community names for the practice. Transliteration is the formal, general term for what's actually happening. A "Tamil transliteration tool" and a "Thanglish to Tamil converter" are describing the same thing from two different angles.
The distinction that actually matters: transliteration vs translation
This is the one people genuinely get wrong, and it changes what you should expect from any tool.
| Transliteration | Translation | |
|---|---|---|
| Converts | Sound | Meaning |
| Input | naan veetuku poren | "I am going home" |
| Output | நான் வீட்டுக்கு போறேன் | நான் வீட்டுக்கு போகிறேன் |
| What changed | Script only — same sounds, same language | Language — English meaning re-expressed in Tamil |
Notice the outputs in that table look almost identical — that's not a coincidence. Because naan veetuku poren already is Tamil, just written in English letters, transliterating it back to Tamil script and translating the English sentence "I am going home" land on nearly the same result. But feed a transliteration tool a sentence that's actually in English — "the meeting is at 5pm" — and it will produce Tamil-sounding gibberish, not a translated sentence. That's the failure mode to watch for.
Rule of thumb: if your input is already Tamil, just typed in English letters, you want transliteration — this converter. If your input is genuinely in English and you want the Tamil meaning, you want a translator instead.
Why this distinction matters for accuracy claims
Transliteration and translation are graded completely differently, and conflating them makes accuracy numbers meaningless. A transliteration model is checked against exact phonetic correctness — did veetuku become exactly வீட்டுக்கு, character for character. A translation model is checked against meaning preservation, where multiple different wordings can all be "correct."
This site's accuracy numbers — 78.95% word-level exact match, 90.67% character accuracy — are transliteration metrics, measured against a 104,528-example held-out test set of real Thanglish word pairs. They describe how precisely sound maps to script, not how well meaning is preserved.
In short
- Tanglish and Thanglish — same thing, two spellings: Tamil written in English letters.
- Transliteration — the general term for what that practice actually is: script conversion that preserves sound.
- Translation — a different task entirely: converting meaning, not sound, often across languages.
For the practical side — how the sounds map to Tamil letters, and why the same word has several valid spellings — see the complete typing guide.