Weblio provides Japanese-English and English-Japanese dictionary lookup, idioms, example sentences, pronunciation, and translation.

ejje.weblio.jp
Weblio homepage screenshot

About Weblio

Weblio is a Japanese-language online dictionary service for looking up English words and Japanese words. Users can search English-Japanese and Japanese-English dictionaries together. The homepage states that the service combines 85 dictionaries with about 5.06 million entries, including about 2.59 million English words and about 2.47 million Japanese words. The core dictionaries are Kenkyusha's New English-Japanese and Japanese-English dictionaries.

The service also covers idioms, example sentences, audio pronunciation, and specialized terminology in fields such as medicine, law, and engineering. The homepage describes its meta description as free to use. Parts of the site promote paid or separate services, including premium features, online English conversation, and test practice. The source does not describe what these cost or what they include, so this entry does not treat them as part of the dictionary.

Key features

  • Searches several English-Japanese and Japanese-English dictionaries at once
  • Accepts English or Japanese input and returns matching dictionary entries
  • Plays English pronunciation through a speaker icon beside entries
  • Looks up English idioms and set phrases in English-Japanese dictionaries
  • Provides English example sentences showing word usage
  • Offers specialized term dictionaries across multiple technical and academic fields
Best for: Japanese-speaking learners, students, and professionals who need meanings of English or Japanese words, including specialized terms.
Good for
  • Combines many dictionaries in one search, covering about 5.06 million entries
  • Includes audio pronunciation for English entries
  • Describes the dictionary search as free to use
Watch out for
  • The homepage and help content are in Japanese
  • Some services listed on the site are separate offerings, and the source does not state their prices

Weblio at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
Japanese
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Weblio FAQ

Can I search for Japanese words?
Yes. Entering a Japanese word searches the Japanese-English dictionaries.
How do I hear an English word pronounced?
Click the speaker icon next to an English dictionary entry to hear its pronunciation.
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