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Japanese Grammar Checker

Free, AI-powered grammar and spelling suggestions for Japanese. Type or paste below — corrections appear as you write.

Error count: 0  Word count: 0
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Check whether Japanese text was written by AI. Sapling scores Japanese text with a detector model trained on Japanese.

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Frequently asked questions

This tool provides grammar and spelling suggestions for Japanese. Paste your text into the editor above, wait for the spinner in the bottom right of the editor to stop, and you should see errors that Sapling detects underlined in red. If you don't see the spinner badge, please contact us using the Help button above.

Yes. The Japanese grammar and spell checker on this page is free to use, with no signup required.

  1. First, make sure you see the Sapling badge in the bottom right of the editor.
  2. Are you already logged in, or do you already have Sapling installed as a browser extension? If so, your logged-in user setting may be overriding the language setting on this page.
  3. Sapling works best with realistic errors — the kind made in practice, as opposed to intentional ones.

You likely can. Install the Sapling browser extension or one of Sapling's integrations to get the same suggestions in Gmail, LinkedIn, Salesforce, and hundreds of other sites.

Yes. Sapling's grammar and spell check API supports Japanese. You can find our API documentation here.