How Accurate Is Grammarly Score?

How Accurate Is Grammarly Score?

If you’re using Grammarly, then you must know about Grammarly’s score. The score actually stands for readability score, explaining how readable your piece of writing is. This is particularly important if you’re writing long emails or convoluted articles. Grammarly has stressed that readability score is very important, so people have naturally wondered just how accurate Grammarly score is?

Grammarly’s readability score is very accurate. The developers working at Grammarly have developed an effective algorithm to actively and accurately analyze your writing and deliver a usable score, all in real-time. Grammarly score is definitely reliable when it comes to understandability.

Grammarly’s score, however, and its accuracy aren’t the only important topics that need to be talked about. It’s important to know why this is important and how to use it to your advantage. In this article, we’ll be discussing exactly how accurate Grammarly score is and can Grammarly be wrong? What’s a good score on Grammarly, and is Grammarly the best grammar checker?

All these questions are important to you, the user because knowing how to improve your readability – and in that, how to use the score – is instrumental in achieving better writing. Let’s get started.

How Accurate is Grammarly Score?

Grammarly score is very accurate, and it’s all based on fairly simple math. To calculate the performance score, Grammarly calculates the accuracy level of your document based on the total word count and the number and types of writing issues detected. Then, Grammarly compares the accuracy level of your document to the accuracy levels of all other documents where users set the same goals. A score of 90, for example, means that the writing in your document is more accurate than the writing in 90 percent of other documents with similar goals.

A readability score is a number that tells you how easy it will be for someone to read a particular piece of text. Grammarly’s readability score is based on the average length of sentences and words in your document, using a formula known as the Flesch reading ease test.

Readability is a quality of your writing. If the readability of your text is high, people will be able to understand your sentences easily.

There are various factors that have to be taken into account when talking about readability scores.

Text score is one of those factors. Your text score ranges from one to 100 and is based on how many different types of suggestions appear in your document. Another thing it’s based on is how well your text compares to other texts with the same goal in mind.

Word count doesn’t include exclusively the number of words, but character count, number of sentences, reading length, speaking time, etc. These measures can help you additionally improve your text, making sure that your message isn’t lost in the words.

Your readability score is a measurement of how easy it will be for your audience to understand your document.

Can Grammarly Be Wrong?

Yes, Grammarly can make a mistake, but it’s unlikely.

If we’re talking about Grammarly correcting your writing, then yes – Grammarly can definitely make mistakes. It’s actually not rare that it does – the software is not perfect and it can’t recognize context, and it can’t read your mind. The software won’t know if you meant to say ‘its’ or ‘it’s’ – that’s why it can’t be 100% accurate.

However, if we’re only discussing the readability score, it’s very unlikely that Grammarly will make a mistake in its calculations. This is because readability score is calculated by using the formula I’ve already mentioned, which is clearly defined by Grammarly – and it’s highly unlikely that Grammarly, a software, will make a mistake in calculation. This just isn’t something that computers do.

What Is a Good Score on Grammarly?

Your performance score tells you how accurate your document is compared to documents written by other Grammarly users who set the same goals you did. 

The higher the number, the easier it is to read your document. In most cases, you should aim for a score of 60 or higher. With a score of 60, your document will be easy to read for most people with at least an eighth-grade education. (That’s an average 13-year-old, in case you’re unfamiliar with U.S. grade levels.)

If you want to improve your score, you should definitely try focusing on cutting down on lengthy sentences and replacing complex words with simpler ones. Grammarly will make these suggestions on its own, so you won’t exactly have to worry about making these changes.

You might be wondering why any of this is important, and you’re right to do that. That’s why I prefer saying “appropriate score”, more than “good score”. Your writing needs to be as easy to read as possible if you want to impress your audience, and if you’re writing in a too complicated way – your audience may be impressed, but that won’t help them understand what you’ve written. Just because something’s complicated and difficult, it doesn’t mean that it’s useful.

Take this as an example. Imagine that you’re writing a presentation (about literally anything) for a class in middle school. Obviously, you as an adult, have no issues when it comes to understanding longer words or words that are difficult to pronounce, like esophagus, incarcerated, enchantment, enhancement, encapsulation, etc. But the class of middle schoolers who have to listen to your presentation, with their vocabulary still in development – they’re going to have a lot of issues with your presentation.

That’s why it’s best to take this test and adjust your writing according to those results. Grammarly itself will always work on making your writing as simple as possible, always suggesting changes and automatically noticing any situation where you might potentially better your writing.  

Is Grammarly the Best Grammar Checker?

Grammarly is easily the best grammar checker. There isn’t exactly an annual competition of grammar checkers, so I can’t exactly show you the results or any sort of formal acknowledgment, but over 30 million people are actively using Grammarly, and it’s the most highly-rated grammar checker on the web. A lot of these users are active writers; authors, content writers, journalists, teachers, students, etc.

This isn’t without reason.

This writing assistant isn’t just here to correct your grammar and your punctuation, it’s here to give you comprehensive writing feedback, as well. You can use the tool to proofread and check for grammatical errors that you might have made.

The tool can be installed as an extension to your browser, a desktop app for Windows and Mac, and an app for iOS and Android called Grammarly Keyboard. The extension in your browser can be turned off and on when you need it. This is a handy feature because you sometimes won’t need Grammarly, but it will analyze everything you type, as long as it’s turned on.

The app comes in two versions; free and premium. Correcting is everything that your basic, free version will do, and it may be ideal if you’re on a tight budget. You can check your social media posts, emails, and anything you write online.

The premium version, however, is a bit different. With it, you get readability checks, the main topic of this whole article. You only get that with the premium version of Grammarly. It will also correct run-on sentences, suggest vocabulary enhancements, and it will also detect missing citations.

Another advantage of the paid version, one that’s often overlooked, is the plagiarism feature. Grammarly will check your writing for plagiarism on over 8 billion websites, this way, you can be sure that your writing isn’t too similar to someone else’s and won’t be mistaken for plagiarism.

Grammarly is perfect for bloggers, journalists, authors, copywriters, content marketers, content writers, professionals interested in plagiarism detection (most often used this way by professors), students, anyone writing emails, reports, papers, presentations, etc.

Interestingly enough, Grammarly actually offers actual proofreading services, by human proofreaders. You can actually send them your writing, and for the price ranging from 0.02 to 0.12 cents (depending on your word count and how fast you need your writing returned), and they’ll proofread it for you.

And if that wasn’t enough, here’s one of Grammarly’s most prominent reviews “Grammarly allows me to get those communications out and feel confident that I’m putting my best foot forward. Grammarly is like a little superpower, especially when I need to be at 110%.”


  • Tristan

    Tristan has a strong interest in the intersection of artificial intelligence and creative expression. He has a background in computer science, and he enjoys exploring the ways in which AI can enhance and augment human creativity. In his writing, he often delves into the ways in which AI is being used to generate original works of fiction and poetry, as well as to analyze and understand patterns in existing texts.