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Conversion between Traditional and Simplified Chinese

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Open Chinese Convert 開放中文轉換

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Introduction 介紹


Open Chinese Convert (OpenCC, 開放中文轉換) is an opensource project for conversions between Traditional Chinese, Simplified Chinese and Japanese Kanji (Shinjitai). It supports character-level and phrase-level conversion, character variant conversion and regional idioms among Mainland China, Taiwan and Hong Kong. This is not translation tool between Mandarin and Cantonese, etc.


Discussion (Telegram):

Features 特點

  • 嚴格區分「一簡對多繁」和「一簡對多異」。
  • 完全兼容異體字,可以實現動態替換。
  • 嚴格審校一簡對多繁詞條,原則爲「能分則不合」。
  • 支持中國大陸、臺灣、香港異體字和地區習慣用詞轉換,如「裏」「裡」、「鼠標」「滑鼠」。
  • 詞庫和函數庫完全分離,可以自由修改、導入、擴展。

Installation 安裝

See Download.

Usage 使用

Online demo 線上轉換展示

Warning: This is NOT an API. You will be banned if you make calls programmatically.



npm install opencc


const OpenCC = require('opencc');
const converter = new OpenCC('s2t.json');
converter.convertPromise("汉字").then(converted => {
  console.log(converted);  // 漢字


import { OpenCC } from 'opencc';
async function main() {
  const converter: OpenCC = new OpenCC('s2t.json');
  const result: string = await converter.convertPromise('汉字');

See demo.js and ts-demo.ts.



pip install opencc
(Windows, Linux, Mac)
import opencc
converter = opencc.OpenCC('s2t.json')
converter.convert('汉字')  # 漢字


#include "opencc.h"

int main() { const SimpleConverter converter("s2t.json"); converter.Convert("汉字"); // 漢字 return 0; }


#include "opencc.h"

int main() { opencc_t opencc = opencc_open("s2t.json"); const char* input = "汉字"; char* converted = opencc_convert_utf8(opencc, input, strlen(input)); // 漢字 opencc_convert_utf8_free(converted); opencc_close(opencc); return 0; }

Document 文檔:

Command Line

  • opencc --help
  • opencc_dict --help
  • opencc_phrase_extract --help

Others (Unofficial)

Configurations 配置文件


  • s2t.json
    Simplified Chinese to Traditional Chinese 簡體到繁體
  • t2s.json
    Traditional Chinese to Simplified Chinese 繁體到簡體
  • s2tw.json
    Simplified Chinese to Traditional Chinese (Taiwan Standard) 簡體到臺灣正體
  • tw2s.json
    Traditional Chinese (Taiwan Standard) to Simplified Chinese 臺灣正體到簡體
  • s2hk.json
    Simplified Chinese to Traditional Chinese (Hong Kong variant) 簡體到香港繁體
  • hk2s.json
    Traditional Chinese (Hong Kong variant) to Simplified Chinese 香港繁體到簡體
  • s2twp.json
    Simplified Chinese to Traditional Chinese (Taiwan Standard) with Taiwanese idiom 簡體到繁體(臺灣正體標準)並轉換爲臺灣常用詞彙
  • tw2sp.json
    Traditional Chinese (Taiwan Standard) to Simplified Chinese with Mainland Chinese idiom 繁體(臺灣正體標準)到簡體並轉換爲中國大陸常用詞彙
  • t2tw.json
    Traditional Chinese (OpenCC Standard) to Taiwan Standard 繁體(OpenCC 標準)到臺灣正體
  • hk2t.json
    Traditional Chinese (Hong Kong variant) to Traditional Chinese 香港繁體到繁體(OpenCC 標準)
  • t2hk.json
    Traditional Chinese (OpenCC Standard) to Hong Kong variant 繁體(OpenCC 標準)到香港繁體
  • t2jp.json
    Traditional Chinese Characters (Kyūjitai) to New Japanese Kanji (Shinjitai) 繁體(OpenCC 標準,舊字體)到日文新字體
  • jp2t.json
    New Japanese Kanji (Shinjitai) to Traditional Chinese Characters (Kyūjitai) 日文新字體到繁體(OpenCC 標準,舊字體)
  • tw2t.json
    Traditional Chinese (Taiwan standard) to Traditional Chinese 臺灣正體到繁體(OpenCC 標準)

Build 編譯

Build with CMake

Linux & Mac OS X

g++ 4.6+ or clang 3.2+ is required.


Windows Visual Studio:


Test 測試

Linux & Mac OS X

make test

Windows Visual Studio:


Benchmark 基準測試

make benchmark

Example results (from Github CI):

1: ------------------------------------------------------------------
1: Benchmark                        Time             CPU   Iterations
1: ------------------------------------------------------------------
1: BM_Initialization/hk2s        1.56 ms         1.56 ms          442
1: BM_Initialization/hk2t       0.144 ms        0.144 ms         4878
1: BM_Initialization/jp2t       0.260 ms        0.260 ms         2604
1: BM_Initialization/s2hk        23.8 ms         23.8 ms           29
1: BM_Initialization/s2t         25.6 ms         25.6 ms           28
1: BM_Initialization/s2tw        24.0 ms         23.9 ms           30
1: BM_Initialization/s2twp       24.6 ms         24.6 ms           28
1: BM_Initialization/t2hk       0.052 ms        0.052 ms        12897
1: BM_Initialization/t2jp       0.141 ms        0.141 ms         5012
1: BM_Initialization/t2s         1.30 ms         1.30 ms          540
1: BM_Initialization/tw2s        1.39 ms         1.39 ms          529
1: BM_Initialization/tw2sp       1.69 ms         1.69 ms          426
1: BM_Initialization/tw2t       0.089 ms        0.089 ms         7707
1: BM_Convert2M                   582 ms          582 ms            1
1: BM_Convert/100                1.07 ms         1.07 ms          636
1: BM_Convert/1000               11.0 ms         11.0 ms           67
1: BM_Convert/10000               113 ms          113 ms            6
1: BM_Convert/100000             1176 ms         1176 ms            1

Projects using OpenCC 使用 OpenCC 的項目

License 許可協議

Apache License 2.0

Third Party Library 第三方庫

All these libraries are statically linked by default.

Change History 版本歷史

Links 相關鏈接

  • Introduction 詳細介紹
  • 現代漢語常用簡繁一對多字義辨析表

Contributors 貢獻者

Please feel free to update this list if you have contributed OpenCC.

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