English Grammar Checker with Explanations

Every correction comes with a short reason, so you know why it changed.

English text

See why each English correction is made. CorrectNow explains every spelling, grammar and punctuation fix in plain words, so you learn as you write.

Learn from your own mistakes

Click an underlined word to see the correction and a one-line reason. Over time you will notice your common English mistakes and make them less often.

Helpful for

People learning English
Students preparing for exams
Writers who want to understand a rule, not just fix it

How to use it

Paste your English text and click "Check Text".
Click any underlined word.
Read the reason, then accept or dismiss.

FAQ

In which language are explanations shown?

Explanations are usually in English. For some languages, such as Tamil, they can appear in the language itself.

Are the explanations always right?

They are AI-generated and usually helpful, but check a grammar book or teacher if a rule seems wrong.

Is it free?

Yes. The free plan gives 1,000 credits a day (500 words per check); Pro allows 5,000 words per check.