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Best Free Online Grammar Checker

Trinka is an AI-powered, free grammar checker and language enhancement writing assistant designed specifically for academic and research paper proofreading. In addition to advanced grammar checks, Trinka improves your writing for vocabulary, tone, syntax, and more. Trinka offers advanced grammar checks and contextual spelling corrections instantly and lets you improve your writing in minutes. 

Trinka provides real-time writing suggestions and advanced grammar checks to help professionals and academicians ensure formal, concise, and engaging writing. Trinka's AI grammar checker is trained on millions of well-written papers and articles covering 1300+ subject areas including medicine, life sciences, physical sciences, engineering, humanities, business, and arts to give you the most relevant suggestions for your subject.

Who can use this Grammar Checker?

Trinka is ideal for anyone looking to improve their English writing skills. Trinka's free grammar checker tool is trusted by academics, copywriters, marketers, product teams, bloggers, and more.

More than a Grammar and
Punctuation Checker

Advanced Grammar Checks

Trinka goes beyond the basic grammar and spelling checks to evaluate your writing for advanced grammar errors and suggests language enhancements to improve your writing quality.

Neither the healthy individuals nor the patient recognize recognizes the visual discrepancies.

Sentence Structure

Trinka's sentence corrector helps you structure your sentences better based on your subject matter, making your writing easier to read for your audience.

The students don't enjoy to go going over the same rules again and again.

Word Choice

Trinka fixes the errors in word choice that make your writing unclear. Trinka makes your writing concise and clear, so that you can communicate your intent accurately.

One of the reasons is because that the fabrication cost for of steel members depends upon the material.

Advanced Spell Check

Trinka’s free spell checker understands the context of your writing and helps you pick the right word for your topic. No more awkward spelling errors! 

The Bonferoni Bonferroni test was used to check for statistical significance.

Other AI Tools Available with Trinka Grammar Checker


paraphraser-icon Paraphraser


Experience enhanced clarity and tone in your writing by rephrasing text with Trinka's Paraphrasing Tool. Designed to deliver coherent rephrasing while maintaining the original meaning.


Plagiarism Checker Plagiarism Checker

Plagiarism Checker

Gain access to gold-standard plagiarism checkers powered by iThenticate and turnitin at an affordable price. Scan your document against the largest database, which includes paid content from all top publishers worldwide.

Who Can Benefit From This Grammar Checker?

Trinka is perfect for anyone wanting to enhance their English writing skills. Our free grammar checker is trusted by academics, copywriters, marketers, product teams, bloggers, and more.


For research scholars and academics, Trinka is an essential tool for improving articles, dissertations, and research papers. It helps maintain academic standards and ensures clear communication of ideas.


Trinka enhances your professional documents, such as reports, presentations, and emails. It corrects spelling mistakes, improves sentence structure, and enhances overall professionalism.


Trinka is an essential tool for students at all levels. It helps edit essays, research papers, and assignments, ensuring perfect grammar, clarity, and coherence.

Writers of Various Content

Trinka is versatile and can assist with any type of writing. It can revise personal statements, cover letters, novels, social media posts, and more, ensuring your message is communicated clearly.

Make Your Writing More Effective with Trinka’s Grammar Checker

Trinka's AI grammar checker checks your writing and improves your sentences holistically – for tone, structure, word choice, and readability – unlike other sentence checkers. Streamline your workflow with our professional grammar checker- it incorporates three products in one. Get a sentence checker, spell checker, and a punctuation checker.

Get more than just grammar check and ensure your writing is clear and concise.

grammar checker

Learn Grammar with Trinka's Grammar Checker

Every grammar correction is a learning opportunity. Trinka's grammar checker doesn't just highlight errors but also explains how to fix them, which will help you become a better writer. You get an indicative score of the overall language quality of the content too.

Through Trinka's AI grammar checker, students can learn how to write effectively and inculcate best writing practices.

grammar checker


What are you waiting for?

Trinka’s Grammar Checker FAQ

We tested 5,778 words from five academic domains on other free grammar checkers. We checked for the accuracy of corrections, style guide preferences, conciseness, and contextual spelling checks – and stood out proficiently. For a detailed comparison, check out our comparison whitepaper.

⚡ AI-Powered Grammar Checker🌐 Support: US, UK, JP, TW, CN, KR, PT, ES
🆓 Signup: Free🛢️ Large Academic Database
✅ Checks: Powerful Grammar, Plagiarism and Spelling📋 Easy to Search and Use

Trinka isn't your typical grammar checker. It's an excellent choice for academic and technical writing. Trinka's free plan includes more features than most other premium grammar checkers. Our premium plan is reasonably priced and offers more features that cover your every writing need!

Trinka’s grammar checker can be used on any web browser. It is also available as a browser plug-in for the most popular browsers such as Chrome, Firefox, Safari, and Edge, to help you get grammar corrections on your favourite websites. Trinka is also available on MS Word add-in for premium users.

Trinka Enterprise solution offers a variety of easy-to-integrate options. You may use Trinka JS to integrate grammar check into your website by simply inserting a code snippet or use Trinka API that lets you integrate Trinka into any of your existing products or workflows.

If there is plagiarized content in your text, it will be detected by Turnitin. Trinka does not write on your behalf, so any plagiarism performed by you is your sole responsibility. You can, however, use Trinka’s plagiarism checker to avoid circulating plagiarized content.

Trinka suggests corrections to your writing through our proprietary AI technology and does not use ChatGPT/GPT-X to correct the text. Therefore, Trinka-corrected human writing should not be labelled as AI writing.

Use Trinka to check your writing online for free. It is an advanced AI-powered tool that makes your writing clear and easy to understand. With Trinka, you can check your text for everything from minor punctuation errors and typos to nuanced grammatical mistakes and phrasing problems. You can check your grammar for free anywhere on the internet with Trinka's browser plugin as well as in MS Word using the Trinka add-in for Word.

In order to check the grammatical correctness of a sentence, simply paste it in Trinka's spelling and grammar checker. Trinka will thoroughly check the sentence for punctuation, grammar, and vocabulary mistakes.

Just install Trinka's browser plug-in for your favorite browser and let Trinka check the grammar of your tweet. Get instant grammar check across Twitter.

Install Trinka's MS Word add-in to get corrections in real time. Moreover, theTrinka Proofread File feature in the add-in can automatically edit your MS Word document in track changes, which you can then download from Word's side panel and finalize. Become a Premium member to use this powerful tech to make your writing clear and confident.

Trinka’s grammar checker uses advanced natural language processing (NLP) algorithms that are trained on millions of manuscripts in different subject areas. Trinka is also powered by handcrafted grammar rules that are continuously tested and updated to provide holistic content improvements.

Just install Trinka's browser plug-in and get instant grammar check automatically on your favorite browsers.

The Trinka grammar checker has been specifically designed for academic content. Hence, it is the best free grammar checker for academic and research content. Our assessments on relevant datasets show that Trinka generally achieves >90% precision and >80% recall.

Trinka's MS Word add-in checks and provides free instant grammar checks. Moreover, Trinka Proofread File automatically edits your MS Word document in track changes, which you can download and finalize.

Trinka’s free grammar checker goes beyond grammar checks and enhances your writing for sentence structure, style, tone, and much more.

Trinka spelling and grammar checker can be accessed freely on this page only up to 300 words, but with its basic plan you can use it up to 5000 words for free.

Trinka goes beyond grammar and spelling, so it will not just assist in enhancing the grammar of your document but also holistically improve the language quality of your document.

Because Trinka's grammar checker is specially designed for academic and formal/technical writing, it is the online best grammar checker for manuscripts.

In Trinka's free grammar checker, there is an inbuilt feature known as Consistency Checker. It identifies 5 variations of inconsistencies in a single click.

Trinka grammar checker offers an add-in for MS word users, Trinka also has an auto file edit feature where your document is automatically checked for grammar errors in seconds, and you get all the suggestions in track changes.

Trinka's free grammar checker needs an active online connection to provide real-time suggestions.

Trinka's free instant grammar checker will automatically proofread your text to ensure that it is in the most suitable form. You can click on the suggestions that appear for the underlined text to correct spelling mistakes and grammar errors or to apply style suggestions.

With Trinka's Basic plan, you can check your grammar for free anywhere on the internet with Trinka's browser plugin.

Absolutely! Trinka’s grammar checker provides suggestions with explanations for you to learn from your mistakes and make an informed change to your content.

The quality of the original writing will determine this. A proofreader would be beneficial if you do not speak English and make several complex errors pertaining to logical construction in English. Trinka can fix thousands of grammatical mistakes and complex writing problems. However, AI is limited. If the construction is not logical, it cannot decipher your intended meaning. For those who possess sufficient knowledge of the English language to construct logically correct sentences, Trinka grammar checker can take care of tone, word choice, grammatical constructions, spelling, and a whole lot more.

Yes, Trinka’s grammar checker can correct punctuation and improve the quality of your content.

The Trinka Premium grammar checker can be accessed at a 20% discount by students. Reach out to to avail this discount.

Trinka's grammar checker only supports English.

Use the Trinka browser plug-ins, depending on your browser of choice, to take advantage of Trinka's free grammar checker across all websites.

Once you sign up for Trinka's Basic plan and download the Trinka browser plug-in, you can access it across websites and correct your grammar anywhere, online. You can also use Trinka Word add-in for MS Word documents.

Besides spelling and grammar, Trinka's grammar checker also corrects punctuation, sentence structure, tone, etc. to improve your content.

Yes. the Trinka grammar checker excels at revising academic/technical documents. We recommend that you use it for theses, research papers, reports, essays, and other formal documents.

Currently, Trinka AI does not support any other language except for English. However, we are continuously working on updates and improvements, and it is planned to be available in future updates. Stay tuned for further announcements regarding language support.

Grammar checking has become an expected feature for any writers nowadays. Trinka made it easy to integrate free grammar checking feature into any online editor. We've build a grammar checking tool that makes this easy. You should be able to integrate grammar and spell checking into your editor in a few minutes.