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Google Translate

Google Translate

Free translation for text, images, documents, websites, and speech in 100+ languages

翻訳・ローカライズTranslationCamera TranslationOffline TranslationFree

Google Translate is a free translation service for text, images, documents, websites, and speech in more than 100 languages. It runs on web, Android, and iOS, with offline packs, instant camera translation, and near real-time conversation and transcription modes.

公式サイトへ

更新日

2026-10-21

対応プラットフォーム

Web / Android / iOS

無料

Free: the web app and the official Android and iOS apps are free to use, with no charges listed on the official pages. Feature support varies by language.

* 料金は参考情報です。最新の料金は公式サイトをご確認ください

Google Translate
translate.google.com

Google Translateの主な機能

  • Text Translation

    Type or paste text to translate between 108 languages, with detection for the source language.

  • Camera Translation

    Point your camera at text to translate it instantly, or import photos for higher-quality results.

  • Conversations

    Translate two-way conversations on the fly so each side hears their own language.

  • Live Transcribe

    Continuously translate someone speaking another language in near real time.

Google Translateのおすすめ用途

Travelers

Point your camera at menus and signs to read them instantly in your own language.

Language learners

Check words and phrases by typing, handwriting, or voice and save them to a phrasebook.

Multilingual workers

Translate documents, web pages, and bilingual conversations without leaving your browser.

長所

  • Covers 100+ languages for free on web, Android, and iOS
  • Multiple input modes: typing, handwriting, voice, camera, and photos
  • Offline packs keep translation working without internet
  • Phrasebook and cross-device syncing save frequent translations

注意点

  • Feature support varies significantly by language
  • Accuracy can drop for long, idiomatic, or specialized text
  • Real-time transcription supports only a small set of languages

Google Translate のクイックスタートと実践のコツ

クイックスタート

  1. 1

    Pick the destination language and set it once instead of re-selecting per phrase, then paste the whole paragraph rather than single sentences.

  2. 2

    For signs or menus in front of you, use camera translation instead of photo import: it avoids a second upload step.

  3. 3

    For documents, translate the file rather than copying text out of it, so layout and headings survive.

実践のコツ

Translation quality depends more on the source text than the target language. Write complete sentences with explicit subjects and avoid ambiguous pronouns before translating, especially between languages with different pronoun habits. Treat idioms and product names as terms to verify rather than translate, and cross-check numbers, dates, and units by eye; those are the errors that survive fluent-looking output.

Google Translateの代替ツール

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