2000+ organizations trust our AI-based grammar checker and paraphraser
- BMW Group
- European Union
- Spiegel Magazine
- Deutsche Presse-Agentur (dpa)
- Algemeen Nederlands Persbureau (ANP)
- Bertelsmann Stiftung
- Schweizer Radio und Fernsehen (SRF)
- IP Australia
- Wirtschaftsuniversität Wien
Our Browser Add-On Works Anywhere on the Web
Receive tips on how to improve your text while typing an e-mail, a blog post, or just a simple tweet. Whatever language you’re using, LanguageTool will automatically detect it and provide suggestions. To respect your privacy, no text is stored by the browser add-on.
Over 1 million users trust LanguageTool with their writing
Top-rated grammar checker for Firefox with over 1 million users
Over 4 million users trust LanguageTool with their writing
Top-rated grammar checker for Chrome with over 3 million users
Do you speak a foreign language?
The Most International Writing Tool
There are over 7,000 languages and various multilingual countries in the world. LanguageTool helps as an international spellchecker and paraphraser in several languages, including:
+ more than 30 other languages and dialects
Reach Your Potential With Statistics
This feature helps you stay consistent with your writing by tracking your productivity. It also provides an overview of languages used, errors made, and suggestions applied, so you can see for yourself how your writing skills have improved.
Integrates With Your Favorite Office Program
Get the best out of your docs and deliver error-free results, whether you’re working on a dissertation, essay, book, or you just want to note something down.
Google Docs Add-on
Check all your texts in Google Docs for grammar and spelling mistakes with the free browser add-on.
macOS App for Microsoft Word
LanguageTool for macOS allows you to check text in Microsoft Word and most of your favorite Mac apps.
Microsoft Word Add-in
Works with Windows, Mac, and even the online version. Requires Word 2016 or later or Office 365.
Text checking for LibreOffice & OpenOffice
* LanguageTool’s grammar check for OpenOffice requires Java 8. Currently not available for the Premium version. Problems installing it? Look here for help: Troubleshooting
Do you fall victim to typos and misspellings way too often? LanguageTool finds every mistake and underlines it in red. Spell every name, phrase, and word the write… eh, the right way!
Grammar rules have never been so easy! LanguageTool will help rid your writing of all grammar gaffes, like incorrect subject-verb-agreement, wrong plural forms, or misuse of grammatical forms.
Commas and dashes and hyphens… Proper punctuation can be tricky—LanguageTool ensures you’re using them right. It can even help you form complex sentences and tell you when you’ve used too many exclamation points!
It’s all about the capital, right? And the lowercase letters, too. LanguageTool corrects incorrect casing, whether you’re writing capitalized names, months, places, or national identities.
LanguageTool helps your writing be as stylish as you are by detecting overused phrases, foreign terms, redundant words, and improper word choice. All you have to do to find the best style is look out for the blue underline.
Frequently Asked Questions
Make your text sound professional and avoid embarrassing style, punctuation, and grammar mistakes
Does LanguageTool only include spelling correction?
LanguageTool corrects spelling mistakes, but it also offers a full writing analysis of all possible texts. In addition to spelling, grammar, and word choice, language style is also corrected.
How well does LanguageTool detect comma errors?
Punctuation errors of all kinds are found and corrected by LanguageTool. Its correction distinguishes between optional and required commas. Even complex sentence structures can be proofread by the comma check.
How does error detection and correction by LanguageTool work?
The error display and suggestion cards are shown automatically and directly while typing. This means that texts can be checked and corrected in just a few moments. To see synonyms, simply double-click on any word.Read more
Which languages can be checked with LanguageTool?
LanguageTool masters more than 30 languages and dialects. Its main languages are English, Spanish, German, French, Dutch, and Portuguese. In its English version, you can choose between six standard varieties (US, UK, Canada, Australia, New Zealand, and South Africa).
Is LanguageTool free?
LanguageTool is available in two versions. The free version corrects spelling as well as simple punctuation and some style mistakes. Only the Premium version will show you all errors and give you the best possible text. Team accounts for companies are also available.Read more
Does LanguageTool work on my program?
LanguageTool is not bound to a specific program or website. There are several extensions and add-ons available, so it can be used in all common internet browsers. In addition, you can find a dedicated text editor as an app for iOS, macOS (Apple), and Windows. All you need is just one user account.Read more
Is LanguageTool suitable for paraphrasing sentences?
LanguageTool now offers an A.I.-based paraphraser in addition to correction. This can help you to rewrite entire sentences to make them simpler, shorter, or more formal.Read more
Can LanguageTool help me correct a bachelor or master thesis?
If you have to write a term paper, bachelor thesis or master thesis at a university, LanguageTool can help you to be sure that it is free of errors. The writing assistant’s style check is also particularly helpful for other academic texts in schools or at publishing houses. By the way, students get a discount for LanguageTool.Read more
Unleash the professional writer in you with LanguageTool Premium
Go well beyond grammar and spell checking, and impress with clear, precise and stylistically correct writing.Learn more