Hanci (汉词) is an online Chinese-language reference resource designed to make learning and looking up Chinese characters and vocabulary easier. Its website brings together Chinese character dictionaries, word definitions, idiom explanations, and an English-Chinese dictionary. The collection includes more than 80,000 Chinese characters and 200,000 words, giving learners and other users a broad range of material to explore.

Character entries provide detailed information such as pronunciation, phonetic notation, stroke order, radicals, variant forms, related words, synonyms, and antonyms. The site also offers explanations and background information to support understanding of Chinese vocabulary and idioms. Its searchable reference tools are aimed in particular at school students, while also serving anyone seeking help with Chinese language study or word research.

Hanci presents itself as a practical, free-to-access online learning resource. The website notes that some of its materials are contributed by users and invites people to contact the site about copyright concerns.