Great readability.
Better engagement.
More conversions.

Readable will quickly test the readability, spelling and grammar of your text and show you how and where to make improvements.

TEST YOUR READABILITY

85%

The proportion of the public who can read your content if it has a readability grade of 8 or lower.

7

The average reader's attention span, in seconds, in 2019. About the same amount of time it takes to read these few lines of content.

85%

The increase in the number of people who will finish reading your content if its readability is improved from grade 12 to grade 5.

Anna Bolton
Anna Bolton
Conversion Copy Co.

"

People tune out and hit the back button when they don't understand what you write. Even if I use the most persuasive copywriting techniques, if I'm not clear, my clients will lose leads and sales. That's why I use Readable to match my copy with my audience's reading level.

It's one of my top conversion optimization tools! "

Let's get started. What are you interested in?

Content Analytics

Analyze and continually monitor your website content to improve your search profile and increase visitor engagement.

Globe Website Readability

Better Writing

Check and improve the readability, spelling and grammar of text, emails or files.

Pencil Text Scoring

Integrating Readability

Add powerful readability, spelling and grammar checking functionality into your own content management software.

Cog Readability API

Tried and tested by leading brands and writers, including:

Salesforce logo
Uber logo
NYC logo
Shopify logo
us-department-of-health-and-human-services

Are you engaging your audience with readable content?

Find out for free

ReadablePro features you will love

Bullseye

Cutting edge accuracy
Trustworthy readability algorithms verified by over 1,000 automated tests and hand-calculated scores.

Text file

Score anything
You can score anything – web pages, Word documents, Open Office, PDFs, Markdown and even eBooks.

Table

Readability reports
Generate reports (white labelled for your clients) and have them emailed to you regularly.

Link

URL + website scoring
Analyse an entire website, using its sitemap or RSS feed, in just a few minutes.

Email

Email marketing scoring
Send your test email campaigns to your own unique email address and receive a full readability report.

Algorithm

Industry leading algorithms
The world's most respected and trusted readability formulas.

API

Readability API
Build readability right into your website CMS or other software with our powerful API.

Eye

Content analysis
Monitor the sentiment and tone of your content to ensure a consistent voice.

Keyboard

Keyword analysis
Monitor keyword density of your content so it looks on-topic to search engines.

Cog

Integrations
Make readability scoring available everywhere with Dropbox and Slack applications.

What is a readability score?

A readability score is a computer-calculated index which can tell you what level of education someone will need to be able to read a piece of text easily.

Readable uses tried and tested readability formulas, as well as our own proprietary scoring systems, to analyse the readability of your website or text and recommend ways to improve upon it.

To ensure your content is readable by 85% of the general public, you should aim for a readability score of Grade 8 or better.

Typical factors used for readability scoring include:

  • Average sentence length
  • Syllable count
  • Percentage of multi-syllable words
  • Average word length
  • Familiarity of words
  • Complexity of sentences

Are you engaging your audience with readable content?
Find out for free, today!

Get Started

The readability formulas that power Readable

Flesch Reading Ease

Flesch Reading Ease will tell you what level of education someone will need to be able to read a piece of text easily.

The Reading Ease formula usually generates a score between 0 and 100 (though scores outside of that range are possible). Unlike most of the other algorithms we use, a higher score is better when it comes to the Flesch Reading Ease.

Flesch Reading Ease is probably the most widely recognised readability scoring formulas, and has been incorporated into law in several countries and US states as a reliable measure of readability of text.

Check

Flesch-Kincaid Grade Level

In the mid 1970's the Flesch Reading Ease was amended so that it could be used by the US Navy. From those changes and enhancements, the Flesch-Kincaid Grade Level was created. It works in the same way, but produces a Grade Level rather than a score between 0 and 100.

Flesch-Kincaid Grade Level classifications are based on:

  • Sentence length as judged by the average number of words in a sentence
  • Word length as judged by the average number of syllables in a word.

Check

Gunning Fog Index

The Gunning Fog Index is principally used as a tool to help writers keep their texts clear and simple and was developed by Robert Gunning Associates in 1944, experienced newspapers and publishing consultants.

The Gunning Fog formula generates a grade level, typically between 0 and 20. The formula estimates the years of formal education the reader requires to understand the text on first reading.

So, if a piece of text has a grade level readability score of 6 then this should be easily readable by those educated to 6th grade in the US schooling system (i.e., 11-12 year olds).

Check

Automated Readability Index

The Automated Readability Index was developed in the 1960s by the US Air Force Medical Division as a way to analyse the readability of technical manuals, reports and training documents. Originally created to tap in to the real-world usage of typewriters to produce manuals at the time, it focusses on letter and word counting rather than syllable density.

Check

IELTS and CEFR

IELTS and CEFR are related measures used by international language students to classify the profficiency of English speech. They can also be used to analyse the difficulty of a piece of text, and their scores are based on prebuilt lists of familiar words. A word like "the" will score better than a word like "xylophone", because it is used more often in English.

Coleman-Liau Index

Developed in 1975, the Coleman-Liau Index remains one of the most commonly used readability formulas. It scores on understandability and approximates the US grade level needed to comprehend the text.

A distinctive feature of the Coleman-Liau Index is that the formula doesn't involve any counting of syllables. Instead, it was designed to easily calculate text by concentrating on characters per word.

Check

SMOG Index

The SMOG Index may be our favourite name of any readability score - it stands for Simple Measure of Gobbledygook, and true to its name it is based on the number of polysyllabic words in the text. Any word with three or more syllables is counted as difficult, and the density of those words in the text is what determines the SMOG score.

"SMOG should be the preferred measure of readability when evaluating consumer-oriented healthcare material." – Journal of the Royal College of Physicians of Edinburgh

Check

Spache and New Dale-Chall

The Spache and New Dale-Chall scores both work in the same way, calculating readability for a specific and narrow audience based on lists of familiar words. The greater the number of unfamiliar words in a piece of text, the worse the score. Spache is great for calculating readability scores for text aimed at children up to the fourth grade, and Dale-Chall is better suited to grades four through to ten.


Try For Free Today