DeinWörterbuch is a free online dictionary offering translation between 26 languages. Its language selection includes widely used options such as English, German, French, Spanish, Chinese, Japanese, and Russian, as well as Nordic and Sámi languages including North Sámi, Lule Sámi, South Sámi, and Kven. Users choose their source and target languages and enter a word or expression to translate.

The service covers everyday and regional phrases as well as technical and subject-specific vocabulary. Alongside translations, entries may provide synonyms, definitions, pronunciations, usage examples, and derived words, helping users understand how terms are used in context. DeinWörterbuch also features word lists, verb resources, recently searched terms, and newly added vocabulary.

The website is responsive and designed for use on mobile devices and tablets, so users can access the dictionary on the go or from school and work. With its broad language coverage and supporting vocabulary information, DeinWörterbuch serves learners and anyone seeking practical multilingual word reference