There are plenty of free and premium grammar checkers available to help you check the grammar of your texts. Generally, a grammar check is performed online or offline using the re­spect­ive software. The most suitable tool is the one that meets your needs for pricing, range of functions, mul­ti­lin­gual abilities or WordPress com­pat­ib­il­ity.

Anyone earning a living through writing should pay par­tic­u­lar attention to grammar. Emails to superiors and customers, web texts and written ap­plic­a­tions should be free from errors. John Mueller, Webmaster Trends Analyst at Google, em­phas­ises how poor spelling and grammar can neg­at­ively impact the user ex­per­i­ence and a website’s Google ranking.

To be on the safe side, it’s not enough to rely on simple tools like the Outlook spellcheck­er or Word spellcheck­ing. Even though switching the language in Word can be useful for spotting gram­mat­ic­al issues, online grammar tools provide more powerful features. Online grammar checkers feature natural language pro­cessing to check spelling con­tex­tu­ally. They’re also useful for op­tim­ising mul­ti­lin­gual websites for search engines, pub­lish­ing mul­ti­lin­gual content with WordPress, or working in mul­ti­lin­gual teams. These tools also come in handy when Word’s spellcheck­er reaches its limits or doesn’t work or the Outlook spellcheck­er mal­func­tions.

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Com­par­is­on of the top 5 grammar tools

The following grammar tools are suitable for spotting errors and cor­rect­ing grammar as well as sentence structure and even the tone of your writing. (Price in­form­a­tion updated: July 2022)

Grammarly

Grammarly doesn’t need an in­tro­duc­tion. Launched in 2009, the grammar checker is a well-known cloud assistant for reviewing spelling and punc­tu­ation. It’s a suitable tool for freelance writers, bloggers and authors, but can be used by anyone looking to share error-free writing. The free version lets you access basic features. For more advanced features such as sentence syntax, users can purchase a pro sub­scrip­tion. When added as a Google extension, Grammarly auto-checks the spelling of emails or other content.

Features include checking of grammar and punc­tu­ation and read­ab­il­ity. It also has a writing assistant to monitor writing style. This makes it one of the most com­pre­hens­ive grammar cor­rect­ors available. You can simply copy and paste text into the web app or install Grammarly as an extension on your browser or as a Microsoft Office plugin.

Grammarly Premium costs ap­prox­im­ately £30 per month. A Business edition is also available. Features include:

  • Extended support
  • Pla­gi­ar­ism report
  • In­ap­pro­pri­ate tone and read­ab­il­ity reports
  • Advanced writing as­sist­ants

Overview of most important features:

  • Pros: Free, com­pre­hens­ive grammar and spelling checker available as a browser extension or web app
  • Cons: Sentence syntax and tone ad­just­ments only available in the premium versions which are quite expensive
  • Cost: Free web app and extension. Premium from £30 per month. Business from £15 per member per month
  • Suitable for WordPress: Yes
  • Operating systems: Windows, macOS, iOS, Android, Linux
  • Language support: American, British, Canadian, and Aus­trali­an English
Image: Grammarly.com website
Grammarly is one of the leaders among the best free grammar checkers. Source: https://app.grammarly.com/
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ProWrit­ing Aid

Online grammar corrector ProWritin­gAid is a good al­tern­at­ive to Grammarly. The grammar checker is directed at bloggers, writers and content authors. It can be used to check for incorrect spelling and grammar, sentence structure, poor word choice, in­con­sist­ent tenses and read­ab­il­ity. It supports most browsers and can be added as an extension to auto-identify spelling mistakes. The software can be trialled online for free but caps the number of words at 500. The premium edition is available at around £20 per month while premium plus runs at around £24 per month.

Features of the premium editions of ProWritin­gAid include:

  • A dedicated desktop app
  • Better browser extension
  • Access to full web app
  • Various reports including a summary report, a style checker, thesaurus check, grammar and sentence structure checker, pla­gi­ar­ism report and overused word checker

Overview of most important features:

  • Pros: Ease of use. Accurate pro­fes­sion­al editing tool. In-depth feedback on writing and sug­ges­tions to improve text. Af­ford­able compared to com­pet­it­ors.
  • Cons: Very few features available in the free web version. No Mac in­teg­ra­tion for Word.
  • Cost: Premium plan costs around £20/month and Premium Pro costs £24/month.
  • Suitable for WordPress: Yes
  • Operating systems: Windows, Microsoft, macOS, iOS, Android
  • Language support: UK and US English
  • Link: ProWritin­gAid.com
Image: Website of ProWritingAid.com
ProWritin­gAid.com is a powerful grammar checker that provides a range of extensive features. Source: https://prowritin­gaid.com/
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Lan­gua­geTool

The Lan­gua­geTool is a web app. Text is simply copied into the grammar checker which provides a quick grammar and spelling as­sess­ment. Basic passive phrases or filler words are also corrected. A free Chrome extension or plugin is available that helps to auto-correct text in ap­plic­a­tions such as Gmail, Thun­der­bird or WordPress. Even a free account lets users save their texts, add ratings using a points system, create a dic­tion­ary, and correct style and ty­po­graphy in `me­tic­u­lous mode´.

The premium package offers extended features including:

  • Word in­teg­ra­tion
  • Online check for Word documents
  • Im­prove­ment of style and tone
  • Style cor­rec­tion for teams
  • Sug­ges­tions for vocab­u­lary and synonyms
  • Detection of false names or number twists

One of the main ad­vant­ages of Lan­gua­geTool is that it supports over 20 languages.

Overview of most important features:

  • Pros: Free spelling and grammar checker online. Chrome extension and plug-in for cor­rec­tions in web and email ap­plic­a­tions. Grammar checker for over 20 languages
  • Cons: Mul­ti­lin­gual check doesn’t detect 100 percent sub­tleties or errors in dialects
  • Cost: Free web app and add-ons/add-ins for Google Docs, Windows, Lib­reOf­fice and Open­Of­fice. Paid premium version for approx. £5 monthly
  • Suitable for Wordpress: Yes
  • Operating systems: Windows, macOS, iOS
  • Language support: 20 languages
  • Link: Lan­gua­getool.org
Image: LanguageTool website
Lan­gua­geTool provides a free online spelling check and comes as a premium version. Source: https://lan­gua­getool.org/
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Ginger

Are you focused on WordPress or creating a WordPress page or mul­ti­lin­gual WordPress blog? Ginger is one of the best grammar tools for WordPress. It can be added as a Chrome extension or embedded in WordPress as well as other programs or social media apps. The tool makes it easy to follow email etiquette. One of the drawbacks is that only trans­la­tion features and sug­ges­tions are included free of charge. High-quality cor­rec­tions require a premium sub­scrip­tion available for around £12/month when you’re paying annually.

In addition to con­tex­tu­al cor­rec­tion features, paid features include an Office add-on, trans­la­tions into over 40 languages, re­ph­ras­ing and a read-out-loud function to check read­ab­il­ity. Ginger checks text in US or UK English of up to 300 char­ac­ters and suggests al­tern­at­ive wordings free of charge.

Overview of most important features:

  • Pros: Free online spelling checker. Rephrases text of up to 300 char­ac­ters. Af­ford­able annual sub­scrip­tion plan for advanced spelling and grammar check, including WordTune re­ph­ras­ing and training mode
  • Cons: No cor­rec­tions in free Chrome extension
  • Cost: Free web check up to 300 char­ac­ters. Paid premium version for £12/month if paid annually or £13/month
  • Suitable for WordPress: Yes
  • Operating systems: Windows, macOS, Android, iOS
  • Language support: Trans­la­tion function for over 40 languages in Premium
  • Link: Ginger­soft­ware.com
Image: Website of online grammar checker Ginger
Ginger Software provides high-quality, con­tex­tu­al cor­rec­tions based on its AI-powered engine. Source: https://www.ginger­soft­ware.com/
Tip

The WordPress plugin Jetpack is not exactly a dedicated grammar tool, but an all-in-one solution with numerous features for WordPress security and man­age­ment. This includes an in­teg­rated grammar and spelling function that can be activated from within the settings.

Hemingway

Hemingway App is a tool for editing and polishing your writing. It corrects common errors, but the focus of the tool is the quality of prose. The online version is available for free. Users who prefer to work offline can download the editor for a one-off fee of £19.99. Features in the free and offline editor include cor­rec­tion of confusing sentence structure, adjusting weak adverbs and pointing out excessive passive voice.

There are two modes, writing mode and editing mode. The writing mode is a simple interface with font options along the top. Editing mode is where Hemingway shines and analyses your work according to potential problem areas. It also suggests a read­ab­il­ity score and displays a word count. The sidebar high­lights what in­di­vidu­al colour coding stands for and mousing over your high­lighted text displays Hemingway’s sug­ges­tions.

Overview of most important features:

  • Pros: Free access to all features. Low-cost offline version. Easy to use and focuses on sentence structure and quality of prose which could com­ple­ment the use of other grammar checkers.
  • Cons: Not as com­pre­hens­ive when it comes to spelling and grammar cor­rec­tion. Can’t export/import text
  • Cost: Free web use. To use the app offline, download it for £19.99.
  • Suitable for WordPress: Yes
  • Operating systems: Windows, macOS, Android, iOS
  • Language support: English only
  • Link: Hem­ing­wayapp.com
Image: The website of Hemingwayapp.com
Hemingway App is a powerful online tool that helps you to improve your writing style and tone. Source: https://hem­ing­wayapp.com/.
Tip

Need more tools for better trans­la­tion of mul­ti­lin­gual texts? You could try trans­la­tion apps like Google Translate, Google Translate al­tern­at­ives, functions such as the automated trans­la­tion of Google tables or even learning apps such as Socratic.

Con­clu­sion: which tool suits you best?

Not every grammar checker is suitable for every purpose. Tools like Ginger and Grammarly provide com­pre­hens­ive and versatile proofread­ing features suitable for bloggers and pro­fes­sion­al copy­writers alike. Grammar tools like Lan­gua­geTool are more suited to quick-checking mul­ti­lin­gual text online. Hemingway App focuses on sentence structure and writing style. When selecting the right tool consider which features are available for free and which incur a sub­scrip­tion charge.

Here are a few tips on which grammar checker fits which re­quire­ments:

  • For mul­ti­lin­gual proofread­ing and/or trans­la­tion: Lan­gua­geTool, Ginger
  • For better reading flow and efficient cor­rec­tion of sentence con­struc­tion: Hemingway App, Grammarly, ProWritin­gAid
  • For in­teg­ra­tion with browsers, web ap­plic­a­tions or text editing programs: Lan­gua­geTool, Ginger, ProWritin­gAid
  • For rewording sug­ges­tions: ProWritin­gAid, Grammarly, Ginger
  • For WordPress in­teg­ra­tion (through plug-in or browser extension): Ginger, Lan­gua­geTool
  • For free grammar check online: Grammarly, Lan­gua­geTool, Hemingway App
  • For the best premium features: Lan­gua­geTool, Ginger, ProWritin­gAid
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