The Lensear Write readability formula
The Lensear Write readability formula is suited to creative writing and internal comms. Find out how it's calculated and how you can use it.
The Lix and Rix readability formulas
Lix and Rix are readability formulas which evaluate non-English languages. Find out how this international solution works and how you can best use it.
The Fry readability graph
The Fry formula is one of several developed in the 1960s for speed and efficiency. Find out how this graph can help you improve your readability.
The IELTS test
IELTS is a standardised proficiency test. It can be used to reach a global audience. Find out how IELTS is calculated and how you can best use it.
The Powers Sumner Kearl formula
The Powers Sumner Kearl formula was developed in the 1950s by a group of readability experts. Find out how you can use it to improve your writing.
The Raygor readability graph
The Raygor readability graph is a formula which calculates the reading grade level of a text. Find out how it's calculated and how it can best be used.
The FORCAST readability formula
Other readability formulas work great when you’re writing a narrative. What about when you’re not, and how can the FORCAST formula help you analyze incomplete sentences?
Creating readability formulas for non-English languages: the problem of the syllable
A readability score is a computer-calculated index which can tell you roughly what level of education someone will need to be able to read a piece of text easily.
The Coleman-Liau Index
The Coleman-Liau Index is one of the most commonly used readability formulas today. Find out how it works and how you can best use it.
How to choose the right readability formula
When it comes to measuring readability, there are a whole variety of readability tests. You could go for the long established Flesch-Kincaid Reading Ease or the later Flesch-Kincaid Grade Level. But what about the Gunning-Fog and the New Dale-Chall?
Readability and the Gunning Fog Index
The Gunning Fog index is a commonly cited readability formula. Find out what the scores mean, the origins of the formula and how you can best use it.
The Flesch Reading Ease and Flesch-Kincaid Grade Level
Flesch readability scores are the most popular and are the most widely tested and used. We'll explain what the Flesch and Flesch-Kincaid readability scores are and how to interpret and use them.