Chinese Character Research Tools & Databases

★ Research Chinese characters through ancient forms, components, etymology, and historical reference tools. Multi-function Chinese Character Database is a free CUHK resource for in-depth character research, with oracle bone and bronze-script forms, component trees, character origins and development, Mandarin and Cantonese pronunciations, and traditional-simplified comparisons. It also includes full-text search of the Shuowen Jiezi, English-Chinese lookup, idioms, and additional historical language tools.

★ Combines extensive language databases with detailed tools for tracing Chinese character development. Chinese Linguipedia (中華語文知識庫) is a free online reference resource featuring Chinese dictionaries, Taiwan and Mainland vocabulary differences, academic terminology, and extensive character research materials. Its character resources trace historical forms through oracle bone, bronze, seal, clerical, and regular scripts, with information on character origins and development.

★ Compare historical Chinese phonology and character data across multiple scholarly sources. The Digital Etymological Dictionary of Old Chinese (Digital EDOC) is a free University of Chicago research tool for analyzing the phonology and structure of early Chinese texts. Enter characters or passages to compare data from sources including the Qièyùn and Guǎngyùn rhyme dictionaries, Baxter-Sagart Old Chinese reconstructions, and the ABC Etymological Dictionary of Old Chinese, with linear and table displays, database searches, character lists, and related research links. The site is currently being renovated for an expanded 2.0 version, while existing research tools remain available on their website.

★ Combines detailed character etymology with historical forms, components, stroke order, and modern usage. HanziStack is a free Chinese character explorer for researching how individual characters are structured, pronounced, used, and developed over time. Character pages include definitions, components, frequency and HSK information, stroke order, example sentences, related characters, and etymology explanations, with many entries showing historical forms from oracle bone, bronze, seal, and clerical scripts through modern traditional and simplified forms.

★ Search more than two million historical character images across multiple scholarly collections. Multi-database Search System for Historical Chinese Characters is a free academic research tool that searches historical Chinese character forms across databases from Academia Sinica and other research institutions in Taiwan and Japan. Results include images from wooden and bamboo slips, manuscripts, historical documents, classics, and printed works, making it especially useful for comparing how characters appeared across different periods and sources.

★ A powerful scholarly resource for tracing Chinese characters across historical forms and pronunciation systems. Xiaoxuetang (小學堂) is a free Chinese character research database that brings together character forms, sounds, meanings, and reference indexes. Search and compare oracle bone, bronze, Warring States, small seal, clerical, and regular-script forms, investigate character evolution and historical pronunciation, and access specialized databases covering ancient scripts and phonology. The interface is primarily in Chinese.

★ Search Chinese characters by components and examine their structure, readings, variants and historical forms. Zi.tools (字統网) is a free Chinese character reference and lookup tool with component and structural searches, pronunciation data, character variants, historical calligraphy and printed forms, Unicode information, and links to major character databases and dictionaries.