About

This Pinyin to Zhuyin Converter transforms Romanized Chinese (Hanyu Pinyin) into the Bopomofo phonetic system used primarily in Taiwan. It parses complex syllable structures, automatically handling tone conversion from diacritics (like mǎ) or numbers (like ma3).

The tool uses a Longest-Match Algorithm to correctly distinguish overlapping syllables (e.g., ensuring xi'an is parsed as xi + an, not xian). It supports both standard Zhuyin tone marks and the numbered notation often used in educational settings.

Formulas

The conversion relies on mapping the phonetic sound components. A Pinyin syllable S is decomposed into:

S = Initial + Final + Tone

For example, the syllable shuāng is processed as:

Map(sh) → ㄕ
Map(uang) → ㄨㄤ
Tone(-) → 1

Resulting in ㄕㄨㄤ1 (or ㄕㄨㄤ with implicit tone).

Reference Data

Initial (Pinyin)	Bopomofo	Final (Pinyin)	Bopomofo
b	ㄅ	a	ㄚ
p	ㄆ	o	ㄛ
m	ㄇ	e	ㄜ
f	ㄈ	ai	ㄞ
d	ㄉ	ei	ㄟ
t	ㄊ	ao	ㄠ
n	ㄋ	ou	ㄡ
l	ㄌ	an	ㄢ
g	ㄍ	en	ㄣ
k	ㄎ	ang	ㄤ
h	ㄏ	eng	ㄥ
j	ㄐ	er	ㄦ
q	ㄑ	i / yi	ㄧ
x	ㄒ	u / wu	ㄨ
zh	ㄓ	ü / yu	ㄩ
ch	ㄔ	-i (after z/c/s)	(empty)
sh	ㄕ	-i (after zh/ch/sh)	(empty)

Frequently Asked Questions

You can leave the syllable without a number (e.g., 'ma') or use the number 5 (e.g., 'ma5'). In Pinyin with marks, it is represented by the absence of a mark (e.g., 'ma').

Yes. You can type "lv" or "lu:" to get "lǚ". The converter recognizes "v" as the standard keyboard substitute for the umlaut u (ü).

By default, the tool matches the requested format (Zhuyin + Number). You can switch to "Standard Marks" (˙, ˊ, ˇ, ˋ) using the settings toggle above the output box.

The tool preserves your original spacing. However, Pinyin is often written without spaces between words (e.g., 'Hànyǔ'). The converter intelligently splits these based on valid syllable combinations.