Grammar checker online

Grammar checker online

Fix grammar, spelling, and punctuation in real time.

Discover Correcto’s Grammar and Spell Checker

Correct grammar, spelling, and punctuation in all your texts with just a few clicks. With Correcto’s AI grammar checker, you’ll forget about poor written communication and enhance your writing.




Try it on Chrome!

Try it on Chrome – It’s free!

Correct grammar and spelling in seconds.

To use the free online grammar checker, download the Chrome Extension and sign up. It works directly in Gmail, Google Docs, WhatsApp, and Facebook.



Traditional Grammar Check

Fix mistakes as you write

  • Correcto highlights your grammar and spelling mistakes with a red underline as you type.
  • Review and fix each suggestion easily with the spell check.
  • Go beyond spelling correction: fix grammar, punctuation, typos, and more.




Intelligent correction

Fix everything with one click

  • Highlight a sentence, paragraph, or full text and review it instantly.
  • Save time and effort with intelligent correction.
  • Start improving your writing in a faster, simpler way with Correcto.

Ready for the premium experience?


Correct without limits.











+90k downloads

What Does a Free Grammar Check Do?

Spelling and Accents

Your texts represent you. They must be flawless. With Correcto’s spell checker, you can review accents, letter confusion, misspelled words and any spelling error quickly and easily.

Grammar

Not sure when to use “because” or “since”? No worries. Correcto’s spelling and grammar checker helps you fix those grammatical errors with one click and ensures proper sentence agreement.

Punctuation errors

Punctuation marks are like traffic signs—they guide your text. Correct everything with Correcto’s grammar and punctuation checker and make sure your writing flows naturally.

Typographical Errors

We’ve all mistyped something and sent an important message with mistakes. With Correcto, that’s over. The online spell checker also fixes typos so you never send the wrong message again.


Spelling and Accents

Your texts represent you. They must be flawless. With Correcto’s spell checker, you can review accents, letter confusion, misspelled words and any spelling error quickly and easily.

Grammar

Not sure when to use “because” or “since”? No worries. Correcto’s spelling and grammar checker helps you fix those grammatical errors with one click and ensures proper sentence agreement.

Punctuation errors

Punctuation marks are like traffic signs—they guide your text. Correct everything with Correcto’s grammar and punctuation checker and make sure your writing flows naturally.

Typographical Errors

We’ve all mistyped something and sent an important message with mistakes. With Correcto, that’s over. The online spell checker also fixes typos so you never send the wrong message again.


Try it on Chrome!

Try it now!

Exclusive Advantages of Correcto’s Grammar Checker

Intelligent Correction

One click to check my grammar and entire text or selected paragraphs.

Custom Vocabulary

Add proper names or brand terms so they aren’t marked as errors.

Focused on You:

Designed to make your writing clear and confident.



Intelligent Correction

One click to check my grammar and entire text or selected paragraphs.

Custom Vocabulary

Add proper names or brand terms so they aren’t marked as errors.

Focused on You:

Designed to make your writing clear and confident.

Trusted by Thousands of Users


Other Uses of Correcto

Paraphraser

With Correcto’s paraphrasing tool you can give your texts a unique touch. Control the tone and style you need for every moment of your day.

AI Detector

Ensure your texts sound human and not like artificial intelligence with Correcto’s AI detector. Use it on all your texts so they are always perfect.

Translator

Translate all your texts with the Correcto translator. It is available in more than 50 languages and translates everything from a simple sentence to a complete text.

Grammar checker

Review and perfect all your texts. With Correcto’s spell checker you can check the spelling, grammar, and even punctuation of all your writing.

Character counter

With Correcto’s character counter, you can find out how many characters and words a text has. Ideal for when you have a limit when writing.

Find the best synonym

With Correcto’s synonym tool, you’ll stop sounding like a broken record. You can ask us to give you synonyms for nouns, adjectives, and verbs.

Plagiarism detector

Check the percentage of plagiarism in your texts with Correcto’s plagiarism detector. You can use it for academic work, professional reports, or any text you need to review.

Text summarizer

Try Correcto’s text summarizer and extract the main ideas from any text while maintaining its originality. It will help you process information more quickly and effectively.

Transcribe audio to text

Looking for a tool to transcribe audio to text? With Correcto, you can convert .mp3, .wav, .m4a, and other files. Transcribe recordings, classes, and even podcasts.

Transcribe video to text

To transcribe a video to text, all you need is Correcto. Transcribe any video, even from YouTube, automatically and online. It will be ready in two minutes.

Text humanizer

Have you used a lot of AI in your latest work? With Correcto, you can humanize your texts and reduce the percentage of AI. You can find out the percentage of AI with our AI detector.

Citation generator: APA

Implement citations using the seventh edition of APA standards. With our tool, you can cite and create your bibliography efficiently, online, and completely free of charge.

Quote generator: Vancouver

Our tool allows you to automatically generate citations in Vancouver format. In just a few minutes, you will have your complete bibliography in Vancouver format thanks to Correcto.

Word changer

To write high-quality, coherent text without repetition, we recommend our word changer tool. You can rewrite texts and words online in a natural way.



Paraphraser

With Correcto’s paraphrasing tool you can give your texts a unique touch. Control the tone and style you need for every moment of your day.

AI Detector

Ensure your texts sound human and not like artificial intelligence with Correcto’s AI detector. Use it on all your texts so they are always perfect.

Translator

Translate all your texts with the Correcto translator. It is available in more than 50 languages and translates everything from a simple sentence to a complete text.

Grammar checker

Review and perfect all your texts. With Correcto’s spell checker you can check the spelling, grammar, and even punctuation of all your writing.

Character counter

With Correcto’s character counter, you can find out how many characters and words a text has. Ideal for when you have a limit when writing.

Find the best synonym

With Correcto’s synonym tool, you’ll stop sounding like a broken record. You can ask us to give you synonyms for nouns, adjectives, and verbs.

Plagiarism detector

Check the percentage of plagiarism in your texts with Correcto’s plagiarism detector. You can use it for academic work, professional reports, or any text you need to review.

Text summarizer

Try Correcto’s text summarizer and extract the main ideas from any text while maintaining its originality. It will help you process information more quickly and effectively.

Transcribe audio to text

Looking for a tool to transcribe audio to text? With Correcto, you can convert .mp3, .wav, .m4a, and other files. Transcribe recordings, classes, and even podcasts.

Transcribe video to text

To transcribe a video to text, all you need is Correcto. Transcribe any video, even from YouTube, automatically and online. It will be ready in two minutes.

Text humanizer

Have you used a lot of AI in your latest work? With Correcto, you can humanize your texts and reduce the percentage of AI. You can find out the percentage of AI with our AI detector.

Citation generator: APA

Implement citations using the seventh edition of APA standards. With our tool, you can cite and create your bibliography efficiently, online, and completely free of charge.

Quote generator: Vancouver

Our tool allows you to automatically generate citations in Vancouver format. In just a few minutes, you will have your complete bibliography in Vancouver format thanks to Correcto.

Word changer

To write high-quality, coherent text without repetition, we recommend our word changer tool. You can rewrite texts and words online in a natural way.


Sign up and use them without limits


Start now – It’s free!

Grammar Checker FAQs

Correcto works as a Chrome extension that analyzes your texts directly in the platforms where you write. Its AI engine reviews your writing in real time, detecting all kinds of spelling and grammar mistakes. It’s the best AI tool for online grammar check.


Check grammar for free with Correcto’s text checker as a Chrome extension in Gmail, Google Docs, Facebook, and WhatsApp. You can also use it in our web editor, accessible from any browser.


Correcto offers two plans: a free plan with limited corrections and a premium plan for unlimited, faster, and more accurate writing assistance.


It’s a tool that detects and corrects mistakes automatically. Correcto goes beyond a basic grammar checker — it uses AI trained to make your communication clearer and more natural to do the best grammar and spell check of the market.


Correcto is recognized as one of the best online grammar checkers because it’s designed to understand how people actually write and communicate.


Correcto check you grammar online free (agreement, verb tenses, prepositions, connectors), spelling (accents, capitalization, typos), punctuation (missing or misplaced commas and periods), and style issues (unnecessary capitalization, repetition, or unnatural phrasing).


Yes. Correcto guarantees data security. All corrections are made in real time without storing your texts, and use encrypted connections to protect your information.


  1. 1. Install the free Chrome extension.
  2. 2. Pin Correcto to your browser.
  3. 3. Go to platforms like WhatsApp, Gmail, or Google Docs.
  4. 4. Start writing your text.
  5. 5. Hover over the red-underlined words, review suggestions, and apply corrections.