Gunning ‘Fog Index’

• Just a guideline

• Take a sample piece of writing (100 words)

• Calculate average words per sentence

• Count words with 3 or more syllables

  • Except capitalised words
  • Except combinations of easy words, e.g. bookkeeper
  • Except words ending -ed, -es

• Add the two numbers & multiply by 0.4

Previous slide

Next slide

Back to first slide

View graphic version