Best Grammar Checker

Use the best free grammar checker online
to improve your grammar, spelling, and punctuation.

Try the Best Online Grammar Checker

   Current Writing Style: Casual

Best Grammar Check: Casual Writing Style Rules--(linked to Linguisoft's proprietary Grammar Checker engine: Check your English text for all types of mistakes: grammar, spelling, punctuation, style, and more. References: The Chicago Manual of Style, 17th Edition, The Elements of Style, William Strunk--Note: Recheck your corrections. New: Expanded text length: 4500

How to use our free grammar check online

The free grammar checker is easy to use. Just paste your writing into the grammar check text area above, click the "Check Grammar" button, and see the results immediately populate – all for free. If you can write, copy, and paste, you can use Linguisoft's free grammar checker. Grammar check

Spelling check errors are highlighted and underlined in red, grammar check errors in dark-green, grammar style check errors in light green, and punctuation check errors in purple.

Red - Indicates a Spelling Check error.
Green - Indicates a Grammar Check error.
Green - Indicates a Style Check error.
Purple - Indicates a Punctuation Check error.

Online Grammar Check Correction Click on the underlined error to see the suggested correction and its error explanation. Click on the suggestion to replace the error.

Click “Ignore error for this word” to Ignore the spelling error or click “Ignore this type of error” for other mistakes. We recommend that you review the results after corrections. Often, corrections create new sentence structure combinations, and the text should be rechecked for the best legibility.

Single? Good grammar could get you a date.

The folks over at the online dating site Zoosk published research claiming that poor grammar can enormously impact your dating success, or lack thereof. The findings show that 48 percent of the 9,000 polled singles consider grammar to be a deal breaker. - Today

A whopping 72 percent of singles who participated in the study reported that they're "turned off" by obvious grammar and spelling errors. Example: using “alot” instead of "a lot." The correct version is, of course, "a lot." Using the former will decrease your date response rate by 12 percent. Nearly 25 percent of the polled singles think that poor grammar means that someone is "uneducated" or "unintelligent", while about 27 percent think that the person is "lazy" or "just doesn't care."

The lesson to this? Use our grammar check and get a date!

Free yourself from embarrassing mistakes with the best professional grammar checker.

No more embarrassing grammar mistakes! Many mistakes are not easy to catch. Often, it is difficult to proofread your own writing, and this is where a "second set of eyes" proves to be extremely helpful. You can write with confidence with the supervision from a correct grammar check. Our free grammar check corrects a vast range of errors. Enjoy the satisfaction of knowing you have written error-free content.

Grammar and spelling errors can ruin the credibility of a great piece of writing. Using our grammar checking software will improve your writing. It's just like “having your English teacher looking over your shoulder while you write.”

A free grammar check to help you write better

Our online free grammar checker will help you to write better; it scans your text for various mistakes, from typos to sentence structure problems and so much more. We use high standard proprietary research for correcting spelling, grammar, punctuation, style, and misused wording mistakes. We wrote our own core grammar engine from our own research and used NO open-source content. Our writing rule sources include Chicago Manual of Style, 17th Edition, MLA Style Manual - Modern Language Association, AP Style - Associated Press, and The Elements of Style, William Strunk. These rank as the time-tested professional guides of style, usage, and grammar for writers. Our high standard of writing rule sources allow you to learn from your mistakes. Submit your work only after editing with a thorough competent grammar check.

About Linguisoft’s grammar check: Structural Clean Writing.

Grammar Check Rules

Grammar Rules

Essentially, grammar is a system of rules that structure a language and the logic of choice and order of our words. Proper grammar makes the relation between the words become clear, and we can communicate better without creating confusion. Knowledge of these grammar rules will help you to handle confusing communication.


A sentence is made of clauses, and a clause is a group of words that has both a subject and a predicate. Every complete sentence is made up of at least a clause. Clausal Diagram

The two clause categories are: Independent and Dependent Clauses. And basically, seven types of clauses create sentences. Our grammar check tool knows and analyzes these seven sentence clause types: Independent/Main Clause, Subordinate Clause, Coordinate Clause, Relative Clause, Noun Clause, Adjective Clause, and Adverb Clause (includes implied Elliptical Clauses). Most other tools do not know underlying Transformational clausal structure and Thematic deep structure correlation.

Sentence Structure

Sentence structure is the grammatical arrangement of a sentence and consists of four types: Simple, Compound, Complex, and Compound-Complex. Sentence Structure Diagram

Our grammar checker tool knows and analyzes sentence structure rules such as (1) a complete sentence must include a subject and a predicate, (2) a compound subject includes two or more subjects, (3) an independent clause consists of a subject and a predicate, etc. This tool is programmed to know these grammatical rules (and also the many exceptions to these rules).

Clean Writing™

Clean Writing™ without any grammar, spelling, and punctuation mistakes is essential with both online and offline writing. Clean writing can be the difference between a good grade and a perfect paper. Comprehensive communication skills and effective error-free writing are necessary to reach a target audience. Revising with our grammar check cleanses your writing. You need your best writing skills to connect with your target audience. Only our grammar check tool scans underlying deep structure that results in clean concise writing. We have the knowledge and expertise. We created the first contextual grammar checker software, this oneFirst Contextual Grammar Checker, Sensible Software, over four decades ago. The image zooms for closeup.

Learn More: Why is our grammar checking tool really the best? An honest comparison study can show the structure checking depth of the current crop of grammar checkers: Take a look at the study. Grammar Checkers: Comparison Tests.

Write Precisely. Try a Phrase Usage Style Check.

1. Choose simple words.

Avoid bookish and overly formal words and phrases. Write 'use' instead of 'utilize', 'near' instead of 'close proximity', 'help' instead of 'facilitate', 'for' instead of 'in the amount of', 'start' instead of 'commence'.

Our phrase usage style check checks for these types of style errors.

2. Avoid Wordy Expressions. Don't ramble with wordiness.

Students use three or more words when one word is good enough. Why?

Use a specific word for a longer phrase. Do not use more words than necessary to express a thought. Good writing is concise and uses only the words you need to express an idea. No extra litter. Great writing doesn't need fancy words.

Use 'while' instead of 'during the time that', 'because' instead of 'because of the fact that', 'now' instead of 'at the present time', and 'if' instead of 'in the event that'. A simple term conveys the same idea and is easier to write and remember.

Our phrase usage style check eliminates these types of style errors. A good grammar checker will include exhaustive phrase usage style checks.

3. Redundancy Reduces Conciseness.

Redundant phrases repeat or express the same thing again.

Some common examples of redundant phrases:

  • free gift
  • circle around
  • close proximity
  • small in size
  • the reason why
  • true facts
  • basic fundamentals
  • past history
  • collaborated together
  • consensus of opinion
  • in spite of the fact that

Our phrase usage style check eliminates redundant phrases. A good grammar check will check for these types of errors.

4. Write short sentences.

Keep sentences short for the same reason that you keep paragraphs short: they’re easier to read and understand.

Use our Readability Check to determine reading ease. Use our Statistics Analysis to tailor each sentence to target your specific audience.

Try the punctuation check. Catch punctuation errors.

What are the 14 Punctuation Marks in English?

The 14 punctuation marks that are used in the English language:

  • Period, question mark, exclamation point
  • Comma, colon, and semicolon
  • Dash and hyphen
  • Brackets, braces, and parentheses
  • Apostrophe, quotation marks, and ellipsis

Some Common punctuation errors:

  • 1. Missing an apostrophe:
    Wrong: The mans dog barked.
  • 2. The Comma Splice:
    Wrong: He was there, she was here.
  • 3. Multiple Punctuation Marks:
    Wrong: This is amazing!!!!
  • 4. Incorrect hyphenation:
    Wrong: It was pre-eminent.
  • 5. Commas in a series:
    Wrong: We have dogs, cats and a hamster.
  • 6. Missing comma with dates:
    Wrong: It was April 1 1989 when the accident happened.

Our punctuation check eliminates most punctuation errors. A good grammar check will check for these types of errors.

Catch more errors.

grammar check-apple

Fast, easy, and reliable. Write better and improve your writing skills. Try the best grammar checker free online. Although you can purchase a desktop version of the software, it’s also completely free to try here.

Many available English grammar check tools claim to be the best but rarely catch common contextual spelling and grammar mistakes. Our grammar checker has more comprehensive grammar error checking ability and identifies more grammatical errors with better accuracy. We created the time-proven algorithms for the best grammar checker product available. Linguisoft's grammar checker is essential for bloggers, students, professionals, and writers who need extra help with grammar, punctuation, and style.

The truly best grammar checker

Overlooked grammatical mistakes can spoil your writing quality. Eliminate mistakes with just a few clicks. Improve it. Write appealing presentations, error-free social media posts, and impressive emails. Rely on a reliable professional grammar checker to improve your writing.

Our time-proven grammar check conceptual design has deep fine-tuned parse algorithms. These algorithms find deep tree-sentence structure errors that other grammar checkers cannot find.

Has much more grammar, spelling, and punctuation checking power than the limited online checkers. This Grammar Checkers: Comparisons Testing study shows how ours is the best.

A powerful free English grammar checker

We provide a base of over 300 writing rules to correct common grammar and spelling mistakes, including verbs, nouns, pronouns, prepositions, homophones, punctuation, phrases, dependent and independent clauses, and more. Error corrections include explanations that help to improve writing skills. Our professional grammar checker helps you to significantly improve the quality of your writing.

Grammar check your way to success with the best grammar check.

With our professional grammar checker software, successful writing is extremely quick, easy, and accurate. The Linguisoft Grammar Checker helps you to write better and correct text more efficiently. You’ll never need to ask for help with English grammar rules again. Correct your text and learn from your own mistakes to avoid repeating them in the future. Learning to write better is remarkably easy. Start improving your writing by making your writing better.

And so, try the best grammar checker online free.



Our premium grammar checker software app scans readability and human interest; it tags the above text as:

* Readable grade level: 8th grade
* Reading Age: 13 years old
* Readable by: 56% of Adults
* Human Interest: Highly Interesting

Write Better. GoPro3. The premium pro version catches many MORE errors.

Looking for more? With premium, you’ll have everything that comes with the free grammar check, plus so much more advanced checking and many other features. Avoid manual copy/paste and keep the formatting of your original text. Correct your text in Mail, Gmail, Facebook, Twitter, forums, blogs, etc. Use our premium grammar checker software as a seamless extension of Microsoft Word, Pages, Scrivener, Safari, Firefox, Outlook, PowerPoint, OpenOffice, or any app. Tune up your writing skills with the best grammar check writing solution.

Besides our own research, we also use Apple's NLP Natural Language framework to supplement our own algorithms to determine semantic distance and to train and deploy natural language models.

Grammar check markup/similar words 10 Most Common Grammar Mistakes to Check For In Your Writing

And our grammar checker catches them for you:

1) They’re vs Their vs There

Their less likely to cause trouble. They're less likely to cause trouble.

Their is a new house down the street. There is a new house down the street.

2) Its vs It’s

Its a good day today. → It's a good day today.

3) Then vs Than

It was larger then the requirement stated. It was larger than the requirement stated.

4) Dangling Modifiers

Having walked on the bridge, a wallet was found. While having walked on the bridge, we found a wallet.

5) Lose vs Loose

I will not loose my wallet. I will not lose my wallet.

6) Farther vs Further

The student read farther in the textbook. The student read further in the textbook.

7) Subject Verb Agreement

A small percentage of the people wants a job. → A small percentage of the people want a job.

Twenty dollars are due. Twenty dollars is due.

8) Use of Commas

We have dogs, cats and a hamster. We have dogs, cats, and a hamster.

9) Who vs That

The lady that just joined went with us today. The lady who just joined went with us today.

10) Less vs Fewer

Less people attended than before. Fewer people attended than before.

Our grammar checking tool finds and corrects hundreds of thousands of complex writing errors — so that you don’t have to! Are you ready to move beyond grammar checkers that miss even basic grammar, style, and punctuation errors? Give your best work by using the best. Connect with your audience through more polished content. So, try the best grammar check solution, and check your way to success.