AI Grammar Checker with clear explanations

Catch grammar, spelling, and punctuation errors, improve clarity and tone, and maintain a consistent formal style. StudyPro's grammar checker explains its suggestions so you can learn from every correction.

Writing level

Writing tone

Paste your text, or upload the document you're editing...

See it in action

Possible grammar, punctuation, clarity, and style issues appear directly in your text. Select a highlighted passage to view StudyPro's suggested change and explanation. Apply a useful suggestion or dismiss it when your original wording better expresses your meaning. Your text changes only when you choose to apply an edit.

Grammar and style issues highlighted automatically

A grammar and style checker built for formal writing

When it comes to formal writing, spelling and grammar aren't enough. A sentence can have perfect grammar but still read as informal, vague, or awkward. StudyPro analyzes sentences in context, allowing you to write more precisely while retaining the meaning you want to convey.

Beyond making sentences grammatically correct, grammar and style shape how easily a reader takes them in. Proper agreement, intentional punctuation and consistent phrasing create a rhythm that carries a reader along instead of tripping them up on mechanics. Checking for that makes a piece easier to read without changing what it says.

The checker can identify possible issues with subject–verb agreement, punctuation, word choice, misplaced modifiers, and shifts in register. Use it to maintain a more consistent tone across papers, reports, and other projects.

Each suggestion includes a short explanation. This turns proofreading into a learning step: understand the possible issue, decide whether the change fits, and recognize similar patterns in future writing.

Fix more than grammar mistakes

Formal writing must be correct, but it also needs to be readable. StudyPro's AI grammar checker runs one pass, looking at grammar, punctuation, clarity, and style together, sentence by sentence. This means you'll get a note on the particular word or phrase that's problematic instead of the whole sentence being lit up.

Correct grammar and sentence structure

Subject–verb agreement errors, unintended tense shifts, sentence fragments, and misplaced modifiers can be hard to spot in a familiar draft. StudyPro reviews words in context and highlights possible sentence-structure issues for you to evaluate.

Check spelling and punctuation

A typo may be obvious, but misplaced commas, apostrophes, capitalization, and inconsistent punctuation can be easier to miss. Review every suggestion in context, especially proper nouns and subject-specific terminology.

Improve clarity, tone, and formal style

Some sentences are grammatically correct but still feel awkward, overly informal, or unnecessarily complex. StudyPro can flag these passages so you can improve readability while preserving your argument and meaning.

Understand every suggestion

Every suggestion includes a brief explanation. Apply the changes that improve your writing, dismiss those that do not, and note recurring patterns for future work.

How to check grammar online with StudyPro

Three steps, and your draft stays on screen the whole way through. You work down the list of possible issues one at a time, with the explanation next to each one.

1. Paste or upload your writing
Paste a paragraph, paper, report, or other document into the text box, or use the existing upload option to add a supported document.
2. Review highlighted issues
StudyPro flags issues related to grammar, spelling, punctuation, clarity, tone, and style. Click any highlight and you'll see the proposed fix along with a line on why it came up.
3. Apply or dismiss suggestions
Keep the revisions that make your sentences easier to understand. Skip the ones that lose important meaning, replace vocabulary specific to your discipline, or pull the writing away from what the assignment asked for.

Grammar checks for papers, reports, and projects

StudyPro can be used as a grammar checker for papers, reports, and other projects. It sharpens the writing, while the ideas and every choice about them stay yours. Some writers run a grammar check over a rough first draft to clear out obvious grammar mistakes; others save it for the last read once the draft is done.

Papers and written projects

Review a draft for sentence-level issues such as awkward phrasing, inconsistent voice, and punctuation. After applying suggestions, reread each paragraph to confirm that the ideas still connect clearly.

Research and lab reports

Longer documents can drift in style, and information-dense sentences are often harder to read. Review terminology, data, references, and claims yourself, especially when a suggestion affects subject-specific language.

A final proofreading pass

Complete the grammar and punctuation check after the argument and structure are settled. Then reread the full document to confirm that every revised sentence still expresses your intended meaning.

Why students choose StudyPro's Grammar Checker

Feedback in context

Agreement, modifiers, punctuation, phrasing, and register are each reviewed against the sentence they sit in, not against a word list.

Support for formal style

Casual or uneven wording gets flagged so you can tighten it, but your voice, your argument and your subject knowledge stay yours.

Explanations that support learning

You see why a passage was flagged, not just that it was — which helps you avoid the same pattern in the next paragraph.

You decide what to change

Review suggestions one at a time. The ideas, and the final wording, stay with you.

Frequently asked questions

How is StudyPro's Grammar Checker priced?

StudyPro is a paid product with limited introductory access. Usage allowances depend on the current plan and may change over time. Check the Pricing page and your in-product credit balance for the latest limits.

How does the AI grammar checker work?

Sentences are read in context, so what gets highlighted is the grammar, spelling, punctuation, clarity, tone and style as they work in that particular sentence. Open a highlight, read the proposed change and the reason for it, then apply it or leave it alone.

Does it check spelling and punctuation as well as grammar?

It does. You get suggestions for spelling and punctuation alongside grammar and style: misplaced commas, capitalization, subject-verb agreement, misplaced modifiers, and awkward word choices. Consider what the sentence is meant to say before accepting any suggestion.

Can I use it for papers and reports?

Yes. Papers, reports, and most other coursework can be reviewed with the AI grammar checker. Your content, evidence, references, and any formatting your instructor requires remain yours to verify.

Does StudyPro review tone and formal style?

StudyPro can flag passages that read as too informal, unclear, or awkward, or that sit oddly next to the sentences around them. Those notes can help you develop a more formal voice while keeping your own writing style.

Will it explain its suggestions?

Yes. A brief explanation comes with every suggestion, so you can judge whether the proposed edit fits your sentence and recognize similar patterns later. Treat the explanation as feedback rather than a verdict, and keep the version that says what you meant.

Can I upload a document instead of pasting text?

Yes. Upload a supported document, or paste the text straight into the editor if you just want a quick look.

What is the difference between Grammar Checker, Smart Editor, and Improvement Suggestions?

Grammar Checker focuses on grammar, and also covers punctuation, spelling, formality, and style. Smart Editor lets you keep editing the document after the first check. Improvement Suggestions reviews the paper as a whole: clarity, structure, and how well the argument holds together.

Ready to check your grammar?

Copy and paste or upload your draft, then receive suggestions regarding grammar, punctuation, clarity, and formal style in a single pass.