Automated Readability Index

The Automated Readability Index (ARI) estimates the US school grade a reader needs to understand a text, from the average number of characters per word and of words per sentence. It was designed in 1967 to be counted by machine, so it uses characters instead of syllables.

Silktide adds 5 to the grade to give a reading age.

Learn more

• Reading level
• Readability settings - choose the formula for each language