15 Best Grammar Checkers (Free and Paid)

Even the most experienced and seasoned writers make mistakes—but luckily, grammar checkers have become increasingly reliable tools to ensure your documents are error-free.

From novice authors who need an extra level of assurance when submitting work or professionals in search of a more efficient proofreading process; selecting the best free grammar and punctuation checker and corrector can be daunting!

We’ve prepared this guide to help you identify which online grammar tool is right for all your writing needs.

Main issues that a great grammar checker should correct

Grammar is the building block of communication, without it our words would be misconstrued and muddled. To avoid any potential confusion in your writing, a grammar-checking tool comes highly recommended! Not only can such checkers detect mistakes but they also provide opportunities to refine your style – whether that’s by suggesting different word choices or teaching you how language should work.

A top quality grammar and plagiarism checker will not just point out errors; they can even comment on if sentences are correctly constructed or missing elements altogether.

A great grammar checker online should correct the following issues:

Grammar rules

A professional grammar checker should know all of the rules of English grammar. These include subject-verb agreement, verb tense agreement, subject-verb number agreement, verb tense consistency (for example, using past tense verbs when talking about past events), adjective placement (for example, putting adjectives after nouns they modify), etc.

Spelling mistakes

One of the most important things that a great grammar checker should correct is spelling mistakes. While they can’t replace a dictionary, they can catch many common spelling errors such as homonyms (words that sound similar but have different meanings). Homonyms are tricky because they often sound similar to other words, but their meaning may be completely different from what you intended.

For example, ‘their’ and ‘there’ sound similar, but have completely different meanings – ‘their’ refers to something belonging to someone else (for example: ‘They brought their own tents’), while ‘there’ means ‘in that place’. This is why it’s so important for a spelling checker to understand context – it won’t know there’s an error unless it knows what you’re trying to say!

Inconsistent tense

This is one of the most common mistakes that editors find in business writing. For example, if you are discussing how a company will perform in the future, use future tense verbs (“will increase”) instead of present tense verbs (“increases”).

Run-on sentences

A sentence is a group of words with a subject and a verb that expresses one complete thought. Run-on sentences occur when two or more independent clauses (groups of words with a subject and verb that can stand alone) are joined with just a comma, rather than being separated by either a period or semicolon, creating one big sentence that makes it difficult for readers to follow what you are trying to say.

Fragments

A fragment is a word group that doesn’t have both a subject and predicate (a complete thought). For example: “To make sure we get our work done on time,” “I hope this article helps you,” and “If we don’t finish our project today” are all fragments because they don’t express thoughts that could stand alone as sentences.

Other grammar mistakes

• Grammar checkers must be able to detect passive voice and change it into active voice.
• Grammar checkers must be able to detect wordiness and unnecessary repetition in sentences.
• Grammar checkers must be able to detect dangling and misplaced modifiers in sentences.
• Confusing or unnecessary punctuation marks.

Disclosure: This post contains affiliate links. We may receive a commission for purchases made through these links.

Best Grammar Checkers

Grammar checkers are a valuable tool, whether you write business documents, blog posts or personal letters. Grammarly can help you with confident writing too, and is available in a wide range of free and paid online grammar checkers. To help you in your search for the best grammar checker, I’ve made a list of the best free and paid ones out there.

1. Grammarly

Grammar checker Grammarly can be used for free. It has a lot of features that make it one of the best grammar checker online.

The free version has basic grammar checking and proofreading functionality, but it doesn’t have all of the advanced features that you can get with the paid version.

The free version is great for students, bloggers and people who want to improve their writing skills.

The paid version is more suitable for professional writers who need a more comprehensive solution to their grammar problems.

Grammarly helps you make your writing mistake-free.

It can also help you write better by providing useful feedback on word choice, grammar to contextual spelling, punctuation, and stylistic suggestions.

It is one of the best grammar checker software available which provides proofreading suggestions, it can also be used as a plagiarism detector. Grammarly runs in the browser, so it doesn’t disrupt your workflow.

Pricing

Grammarly’s free version is designed for personal use, though you can upgrade to one of their paid plans if you want more features. 

• Free Plan
• Premium Plan = Starts at $12.00 per month
• Business Plan = Starts at $15.00 per member per month

2. Ginger

Ginger is a free grammar checker that can be used in Microsoft Word, Google Docs, Gmail, Facebook and Twitter. It has browser extension for Chrome and Firefox.

The Ginger has a large library of over 1,000 different types of errors that it can detect in your writing. It flags issues such as passive voice, sentence fragments and comma splices so that you can improve your writing skills.

Ginger Grammar Checker is a fully functional sentence grammar checker checker using the Ginger Grammar Engine. The Ginger Grammar Engine is an intelligent proofreading engine that analyzes texts at several levels of complexity.

It uses sophisticated grammar rules to perform structural analysis of text, provides context-sensitive suggestions for errors, detects and marks compound words, computes probabilities on parts of speech, and does style analysis.

Pricing

The free version of Ginger has limited features. If you want to use more advanced features like spelling suggestions, you need to upgrade to a paid plan.

• Premium Plan
  • Annual – $7.49 per month. Billed as one payment of $89.88 for a 1-year plan
  • Quarterly – $11.19 per month. Quarterly plan billed as a single payment of $33.57
  • Monthly – $13.99 per month.

3. Scribens

Scribens is suitable for all kinds of texts, from emails to blog posts, from ads to essays.

It has been developed with the goal of helping users get their writing done in an easier way, that allows you to check for spelling mistakes, punctuation errors and grammatical mistakes.

It also has a few other features that are not available in the free version of Grammarly and some other free grammar checking tools.

Scribens is a powerful, free English grammar checker. It corrects 10X more mistakes than Microsoft Word. Scribens has a huge variety of useful writing and style tools that help you make your writing clear, consistent, and more persuasive. 

This grammar checker includes extensions for all your favorite applications and allows Text checker limited to 200,000 characters (approx. 50 pages)

On the premium package, ads will be removed across the entire site.

Pricing

Scribens offers few premium plans that are ideal for businesses, publishers and professionals. Unlike Grammarly, Scribens uses artificial intelligence to check your grammar mistakes as well as your spelling errors.

• Scribens Premium Plans
  • Monthly – 9.90 € per month
  • Quarterly – 6,63 € per month. Quarterly plan billed as a single payment of 19.90 €
  • Annual – 4,16 € per month. Billed as one payment of 49.90 € for a 1-year plan

4. Writer

Writer is a top-rated grammar checker with a sleek user interface. It checks for spelling, punctuation, and grammar errors in almost any text format on your computer screen and corrects them on the fly for you.

Writer promises to help writers perfect their language skills by building up their writing confidence. Writer is quick, accurate and efficient in spotting incorrect use of English grammar rules.

Writer has a free version but you can upgrade to get premium or the other plan. The unique feature it offers is that it has different features for multiple plans they are

Pricing

• Premium Plan
  • PRO – $99 per year, 3 Months Free
  • TEAM – $162 per user/year, 3 MONTHS FREE
  • ENTERPRISE – Contact Sales for this plan

5. Zoho Writer

If you are looking for a grammar checker that is quick, cheap and best of all free, Zoho Writer can be a good option. Zoho Writer is the best spell checker, grammar checker for those users who want to enhance the quality of their existing document and want to spend less time on editing the new content that they are creating.

The most basic feature of a grammar and spell checker is checking the spelling and grammar of your document.

In Zoho Writer, they have fixed this functionality so there is no need to install anything on your device along with customer support to provide assistance when you are faced with an error. 

Pricing:

The services offered by Zoho Writer are free of charge.

6. LanguageTool

There have been a lot of arguments regarding the effectiveness of grammar checkers lately and we want to take this opportunity to explain why we think that LanguageTool’s services are still great

LanguageTool is the most accurate online grammar checker, with a large database of English and other languages. Here are the features of the Language Tool-

Pricing

• Free Plan
• Premium Plan
  • For Individual Users – $2.50 per month, $29.95/year
  • For Teams – $4.74 per month, $56.90/year (2 Users x $28.45/year)

7. Jetpack

With over a million sites relying on Jetpack, it’s hard to argue against it being the best free grammar checker plugin available.

It includes everything you’d expect from a premium grammar checker plus some advanced features that are nice to have.

The Jetpack grammar checker gives you full control over your writing.

It highlights the parts of speech and helps make sure your sentences are logical, coherent, and clear. It also offers the latest technology to ensure grammatical accuracy and other writing mistakes.

Automatically detect and correct errors on your WordPress site using After the Deadline proofreading technology.

Jetpack can check spelling and grammar, identify instances where your style deviates from professional norms (such as use of double negatives), identify repetitive words and phrases, pick up on awkward sentence structure, spot incorrect punctuation and find subject-verb agreement problems.

Pricing

Jetpack offers free proofreading services. The plugin is available in the WordPress plugin directory.

8. Virtual Writing Tutor

People make hundreds of grammar and spelling mistakes every single day.

The majority of people are completely unaware that one or two small things like typos and grammatical errors can lower their presentation, career and overall influence. To solve these problems,  Virtual Writing Tutor is one of the best ways.

Virtual Writing Tutor is a free grammar checker that also has some advanced features.

It checks how good or bad your writing is, helps you find errors and provides helpful suggestions for improvement. It also checks sentence structure, grammar and punctuation rules to help you write efficiently.

Pricing

Virtual Writing Tutor offers their services free of charge.

9. Hemingway

Hemingway is a tool for writers. It analyzes your content and helps to reveal not only grammatical errors, but also complexity and readability issues by highlighting long sentences and hard-to-follow paragraphs.

Hemingway is one of the best free grammar checker tools. It helps make your writing more readable by the use of plain English and less distracting formatting. You can read texts in Hemingway style which is straightforward and concise.

It makes the difference between a formal style of writing and one that sounds friendly, conversational and easy to read.

The version 3.0 has added support for micro syntax, detailed punctuation guides, updates on close reading, advanced math formatting as well as text analysis features like sentence level statistics.

Pricing

A one-time fee of $19.99 is required for the Hemingway App, which is downloadable and can be used offline.

10. NounPlus

NounPlus is the most advanced and accurate free grammar checker for writers. It will analyze your writing and suggest corrections for mistakes in spelling, punctuation, grammar and style.

You can immediately see the corrections that are ready to be used in your writing or make edits manually.

NounPlus is a completely free online grammar checker tool that will help you with spelling, grammar and more.

NounPlus is a full-featured five-star language checker, with real-time grammar and spell checking. Its intelligent suggestion engine detects errors and suggests corrections even before you finish typing.

NounPlus’ context-aware grammar checks can identify the most common mistakes made by students and professionals alike, from subject/verb agreement to possessives to punctuation, word count and more.

Pricing

The services offered by NounPlus are free of charge.

11. After the Deadline

After the Deadline is a free, web-based grammar and spell checker that corrects your text in real time. After the Deadline, is a free and reliable spell checker for English.

After the Deadline scans for grammatical errors in emails, reports, and blog posts to improve your writing. As it improves your writing, it also tracks how much time you spend reading other people’s words or correcting their mistakes and helps you learn from those mistakes too!

Pricing

You can use their free server software for commercial purposes, and they offer their services free for personal use.

12. Linguix

Linguix is not just another grammar checker. It was developed to be a precise and useful tool for everyone who uses the English language professionally.

This grammar checker offers thousands of options for checking sentences, paragraphs and documents more accurately than other grammar checkers.

In addition, Linguix has a built-in function that can fix numerous mistakes automatically after each review.

Linguix is a grammar checker that checks your text, and then makes suggestions on how you can improve your writing.

Pricing

• Free Plan
• Premium Plan = $8 per month, billed as one payment of $96 for a 1-year plan
• Team – Contact with the Linguix team for the price and details.

13. WhiteSmoke

WhiteSmoke is the most in-depth, powerful grammar and spell checker I’ve ever seen. It catches errors that other spell checkers miss (even Microsoft Word’s) and provides a simple way to correct or change common English grammar errors.

The free version has some limitations, but if you upgrade to the paid version, it works amazingly well.

However, there are other grammar checkers that also work quite well and may be just fine for your needs.

WhiteSmoke is designed to not only correct your spelling, but also help you improve your writing style.

This means Grammar Checker for Documents scans every sentence for mistakes, offering corrections along the way.

Pricing

• • Web = $5 per month, billed as one payment of $59.95 for a 1-year plan
  • Premium =$6.66 per month, billed as one payment of $79.95
  • Business  = $11.50 per month, billed as one payment of $137.95

14. ProWritingAid

ProWritingAid is one of the best grammar checkers available online. It is easy to use, and has superior compatibility.

It is a grammar and style editing service that will help you write a paper with more confidence, clarity, and power.

ProWritingAid is one of the best grammar checkers for professional writers and bloggers. It has a comprehensive list of writing rules, including passive voice, sentence fragments, comma splices and more than 1,000 grammar mistakes it checks for.

You can hover over each error in the editor with a blue underline to see what it is and how to fix it.

Key Features

• Faster and better writing
• through 20 in-depth writing reports that go far beyond grammar
• Developing a Strong Writing Style
• Picking the Right Words

Pricing

ProWritingAid offers three subscription for its Premium plan. 

• Monthly Subscription – $20 per month
• Yearly Subscription – $6.58 per month (Billed as one payment of $79.00)
• Lifetime – $399 one-time payment which covers all updates

15. Online Correction

Online correction is A free grammar checker that corrects errors in spelling, punctuation and grammar. If you are looking for a free grammar checker with online correction, then online correction is the best choice for you. 

Online correction is an online grammatical analyzer tool that checks your English grammar, spelling and style.

It helps you find mistakes in your writing and improve it instantly. But still, as a professional writer, you should check every word and phrase before publishing on any website.

Pricing

Online Correction is free to use. 

Conclusion

As a virtual assistant, the best grammar checker for you should be one that does not just check for errors but also helps you improve your writing skills. A program that comes with grammar lessons and allows you to create your own dictionary is the most effective.

As you can see, there is no shortage of tools that can check your grammar for you. It is clear that these tools come in many shapes and forms and each tool has its own pros and cons.

It’s worth experimenting with all of these grammar checkers to find the best one for your needs. Whether you’re selling a piece, writing a term paper, or simply crafting a solid email to send to clients, punctuation, grammar, and sentence structure can fail us at some point or another.

We hope these tools come in handy!