10 Best Grammar Checkers for Flawless Writing (Free and Paid)

Did you know that poor grammar and spelling is the number one factor that damages the reputation of a brand on social media? Accurate grammar might seem trivial, but 42.5% of people take it seriously.

People are judging every piece of writing you put out there, whether it’s on your LinkedIn profile, Instagram posts, landing pages, blog posts, or emails.

If you’re serious about your writing and don’t want to frustrate readers and lower credibility and conversion rates, you must write error-free sentences.

True, you can use techniques such as reading out loud while editing your work. But you might still miss an error here and there. One way to eliminate all mistakes is with a grammar checker. These tools use AI to highlight errors so that you can make changes and fix them quickly.

There are a lot of good grammar checkers, so picking the right one can take a while. To simplify this task, I’ve made a list of the top ones and discussed their pros, cons, and prices.

10 best grammar checkers you should try

1. Linguix [Complete writing assistant with templates]

Linguix is a grammar checker that suits a wide range of users as it is more of a complete writing assistant. It can help you check and improve your grammar, but also has other valuable features like templates.

There are templates for writing emails, blog posts, cover letters, and apologies. You read that right, there’s a template for writing apologies! It’s also very accessible with apps and extensions for the top browsers.

Pros

• Complete writing assistant with a grammar checker, templates, snippets, and plagiarism checker
• Synonyms finder and writing insights help improve your writing
• Browser extensions available for Chrome, Firefox, Safari, and Edge
• iOS and Android apps available
• Desktop apps for Mac and Windows and add-ins for Microsoft Word and Outlook also available

Limitations

• Occasionally misses some errors; not 100% accurate

Best suited for: Linguix suits anyone who writes for fun or professionally. This includes freelance writers, bloggers, business owners, students, and editors.

Pricing: The Premium and Team plans cost $18.95 per month and $10 per month/member. The Premium plan costs $96 annually, but you can get it for just $49 on AppSumo.

2. Grammarly [Most popular writing assistant and grammar checker]

You’ve probably heard of Grammarly already. It’s the most popular grammar checker with over 30 million daily active users. Grammarly is popular because it has a very generous free plan, and like Linguix it is a complete writing assistant. It will not only help you find writing errors but also improve your writing.

An exciting feature is the tone detector which will analyze your writing and indicate the tone. You can then decide if the tone is what you’re aiming for or if you need to change it.

Pros

• Grammar checker helps fix grammar, punctuation, and spelling mistakes
• It also ensures that you are consistent with the grammar style throughout
• American, British, Australian, and Canadian English dialects available
• Browser extensions, apps for mobile, software for PCs, web version, and add-ins for MS Outlook and Word available
• Extra tools like plagiarism detector, tone detector, and synonyms suggestions available

Limitations

• Doesn’t work properly when you edit very long (5,000+ words) pieces
• Need the paid version to access advanced edits and plagiarism detector
• Browser extensions can’t detect plagiarism

Best suited for: Students, entrepreneurs, editors, freelance writers, and bloggers.

Pricing: The Premium plan costs $30 per month or $144 per year. There’s also a free plan and a Business plan for teams.

3. Hemingway [Helps write easy to read content]

Hemingway isn’t a traditional grammar checker as it doesn’t find grammatical errors. Instead, it shows you how to improve your writing. It analyzes your writing and highlights areas you can improve to make your writing more readable. Although it doesn’t fix grammatical errors, Grammarly’s extension works on the web version of Hemingway. So, you can use Grammarly to fix grammar mistakes and Hemingway to improve readability.

Pros

• Indicates passive voice, adverbs, long sentences, and hard-to-read sentences
• Displays the reading grade, which changes as you improve the writing
• Writing mode doesn’t spot errors, which can help separate creative mode from editing mode and improve creativity
• You can use the web version or the desktop app

Limitations

• Doesn’t find grammatical errors
• No apps for mobile devices
• You need to pay for the desktop version

Best suited for: Copywriters, bloggers, social media managers, media buyers, and marketers.

Pricing: The desktop app costs $19.99. The web version is free.

4. Copywritely [Grammar checker with keyword optimization]

Copywritely is a content optimization software with a grammar checker. Using this one tool, you can improve your grammar and better optimize your content for search engines.

First, it can analyze the top-performing content for search queries and show the keywords they contain. Then, you can write the content with the keywords from this research.

After that, you can use the grammar checker to get rid of errors. It can also detect plagiarism. It also has other features that can spot keyword stuffing.

Pros

• Grammar checker finds grammatical and punctuation errors and suggests fixes
• Finds readability errors and helps improve flow, also shows a readability score
• Analyzes top-ranking content and finds keywords to include
• Detects keyword stuffing to help you avoid penalties and improve readability
• Content checker detects plagiarism
• Works in multiple languages

Limitations

• No free version
• The cheapest plan can only check 5,000 words at a time
• No apps for mobile devices and software for desktops, and only an extension for Chrome

Best suited for: Writers, SEO experts, bloggers, and startups.

Pricing: The Personal, Company, Startup, and Enterprise plans cost $18, $35, $45, and $67 per month, with a free trial.

5. ProWritingAid [Grammar checker with a style editor]

ProWritingAid is a grammar checker with a writing mentor and style editor. It finds thousands of grammar, reading, and spelling improvements in real-time. It highlights areas like vague wording, repetitiveness, sentence length variation, and passive voice. It then offers suggestions so that you can quickly make changes.

You can create a custom style guide and add words to the dictionary. It also generates a readability report with easy-to-understand graphs.

Pros

• Highlights grammatical errors and suggests quick fixes
• Writing reports highlight overused words, clichés, hard to read sentences, long sentences, and passive voice
• It can also check for plagiarism
• There’s a Chrome extension, Google Docs plug-in, Microsoft Word plug-in, and desktop app that works with Scrivener and Microsoft Word files
• You can either pay a one-time fee or take a subscription

Limitations

• The free version has very few features
• You need to pay extra for plagiarism checks
• No app for mobile devices

Best suited for: Editors, professional writers, bloggers, and entrepreneurs.

Pricing: The Premium plan costs $20 per month or $399 for life. The Premium Plus plan costs $24 per month or $499 for life. You get 60 plagiarism checks with the Premium Plus plan, but you can also buy them separately. They start at $10 for 10 checks.

6. Ginger [AI powered writing assistant with translator]

Ginger is an AI-powered writing assistant that can help you correct grammatical mistakes and improve your writing. If you install the extension and double-click a word on any website, it’ll find synonyms. This can help increase your vocabulary and writing.

It also includes a translator that can translate your text into 40 other languages like Spanish, French, Japanese, and German. You can also translate text from other languages into English. Plus, there’s a text-to-speech feature that reads your text out loud. It can help improve your English.

Pros

• Grammar checker highlights errors and recommends corrections
• Rephrase feature helps improve your writing style
• Finds synonyms to upgrade your writing
• Can translate from English to 40 other languages
• Allows you to translate from other languages to English
• Highly accessible with apps for Android and iOS, a keyboard for Android, software for Mac and Windows, extensions for Chrome, Safari, and Edge browsers, and add-ins for MS Outlook and Word

Limitations

• No plagiarism checker
• Very few features on the free version

Best suited for: Entrepreneurs, bloggers, and non-native English speakers.

Pricing: The Monthly plan is $13.99 per month, and the Annual plan is $89.88. There’s also a free plan and a two-year plan.

7. Scribens [Freemium grammar checker with a robust free version]

Scribens is a freemium grammar checker with an easy-to-use free version. You don’t even need to log in to use it. Simply visit the homepage and copy and paste your text or import a file, and it’ll find the grammatical errors. When you’re done, you can export it as a Word or text doc, print, or share it directly from the website. It’ll also tell you how many times the most used words appear.

Pros

• Generous free plan that finds grammatical errors and suggests vocabulary enhancements
• Helps improve your writing style
• Grammar checker for the French language available
• Premium version is affordable
• Extensions for Chrome, Firefox, Edge, and Safari, plus plugins/add-ins available for Microsoft Word, PowerPoint, Excel, and Libre Office Writer

Limitations

• No plagiarism checker
• Ads on the free version

Best suited for: Writers, students, teachers, and entrepreneurs who write in English and French.

Pricing: It has one plan that costs €9.90 per month or €49.90 per year. There’s also a free plan.

8. Outwrite [Grammar checker with thesaurus and plagiarism finder]

Outwrite, formerly known as GradeProof, is a freemium grammar checker. It finds spelling, punctuation, and grammar errors in real-time. Its thesaurus feature also helps you find synonyms.

Outwrite has some other tools that can improve your writing style. Over one million people use it to rewrite sentences concisely and eliminate passive voice.  It’s an excellent solution for individuals and teams, and you can access it on multiple devices.

Pros

• Grammar checker helps you find and fix spelling, grammar, and punctuation mistakes
• Thesaurus helps you find alternative words to improve your vocabulary
• Style improvements, structural suggestions, and sentence rewriting improve your writing
• Plagiarism checks determine the originality of your work
• Offers a web version, browser extensions for Chrome and Edge, an add-on for Google Docs, and an add-in for Microsoft Word

Limitations

• No apps for mobile devices
• Only grammar checker and thesaurus are available on the free plan

Best suited for: Bloggers, professional writers, teachers, students, and businesses.

Pricing: The Pro and Teams plans cost $24.95 per month or $14.95 per user/month. There’s also a free plan.

9. Online Correction [Completely free grammar checker]

Online correction is a straightforward grammar checker. You don’t need to sign up to use it. You simply visit the website, copy and paste your text in the field provided, choose the dialect, and submit your text. It’ll analyze it and suggest edits. Online Correction can also autocorrect and fix some of the errors if you check the “Autocorrect” box.

Online Correction only handles English corrections. However, it has sister sites like GermanCorrector.com, FrenchCorrector.com, and PortugeseCorrector.com that can fix grammar in other languages.

Pros

• Completely free to use—no need to sign up
• Finds grammar, spelling, typographical, spacing, and duplication errors
• Autocorrect feature will automatically correct some errors
• American, British, Australian, New Zealand, and South African English dialects available

Limitations

• Very basic grammar checker, no extra features to improve writing
• Not the best interface
• Annoying onsite ads

Best suited for: Students and freelancers looking for a free grammar checker.

Pricing: Free.

10. PaperRater [Grammar checker for essays]

PaperRater is a freemium grammar and spelling checker with an affordable paid plan. Its algorithm, Grendel, analyzes your writing and finds grammar and spelling errors. Grendel also offers suggestions so that you can fix them quickly.

This tool gives your writing a vocabulary score. If your score is too low, you can make changes and improve your writing. It also detects passive voice, informs you about phrases to avoid, and scores essays. You’ll find the essay scorer especially valuable if you’re a student.

Pros

• Finds grammatical errors and spelling mistakes
• Vocabulary score helps you improve variability and writing style
• Overall writing score helps predict essay grade
• Plagiarism check makes sure your writing is unique

Limitations

• Free version can only analyze five pages per submission and 50 submissions per month
• Only web version available, no apps, software, and extensions
• Misses some important corrections

Best suited for: Students and teachers.

Pricing: The Premium plan costs $11.21 per month or $71.55 per year. There’s also a free plan.

Which grammar checker did you like most?

There are a wide variety of grammar checkers. Most of the top ones are complete writing assistants with extra features such as style editors, plagiarism checkers, and synonym finders. Some like Copywritely have even more features that help with SEO.

Choose the right one for your needs and budget. If you have a decent budget, you can pick one of the paid plans from Linguix or Grammarly. However, if you’re on a tight budget, you can use the free versions from Linguix and Grammarly together with Hemingway. Its web version is completely free.

You might also want to check out the AppSumo store as we regularly have deals for grammar checkers, SEO software, and other writing tools.