文法ーCHECK is an AI-based assistant made to help you learn Japanese. You can check your Japanese sentences for grammatical errors, have discussions with an AI regarding how to improve, and more.
10,000,000+
sentences checked
300,000+
site visitors
250,000+
explanations & chats
4 years, 2 months
since we started
⚠️ The AI can make mistakes. Please double-check important information.
Editor
Enter the text you would like to check. The AI model will check it and underline any suggestions, like this:
これにペンです。
Click the suggestion to apply it.
Click the button to remove the suggestion.
Click the button to ask the AI to explain the suggestion in a new chat.
There are currently 2 different modes for text checking in the Editor:
Bunpo Check Mode
Highlight grammatical mistakes and spelling errors
Tone Check Mode
Correct text to casual, normal or keigo politeness
Parse Mode is slightly different. It splits your text into grammatical parts:
これはペンです。
Click any of the parts to see more details, readings and definitions.
Parse Mode NEW
Split text into grammatical parts, check readings and definitions
Threads
Threads are discussions between you and the AI.
Explanation threads are opened when you click the button on a suggestion.
Click the button in the Messenger to create a new question thread and have more general discussions.
Type your messages and click to send.
There are currently 2 different types of Threads:
Explanation Thread
Explain a suggestion and discuss with the AI in a thread
Question Thread
Discuss any questions about Japanese with the AI
Usage limits
Each feature has usage limits set. If you exceed those limits, you won't be able to use the feature until the next day.
Usage counters reset at midnight.
Bunpo Check was started in February 2021 to help Japanese learners work on their output skills. Since then, we've helped more than 300,000 people check their Japanese text. We hope you find Bunpo Check useful in your studies.
Dictionary glosses and frequency data for Parse Mode come from JMdict, a fantastic Japanese dictionary actively maintained by Jim Breen and a team of volunteers.
Note that data entered on this site may be used for improving the service, including training future AI models.
If you have any questions or want to get in touch, send an email to hello@bunpo-check.com!