Question 1

What is a good Flesch Reading Ease score?

Accepted Answer

Flesch Reading Ease scores range from 0 (very hard) to 100 (very easy). Rough benchmarks: 90–100 = 5th grade, very easy (comic books); 70–80 = 7th grade, easy (plain English target for web content); 60–70 = 8th–9th grade, standard (most newspapers); 50–60 = 10th–12th grade, fairly difficult; 30–50 = college level, difficult; 0–30 = professional/academic, very confusing. Target 60–70 for general web audiences; 70+ for healthcare, government and public communications.

Question 2

What is the Gunning Fog Index?

Accepted Answer

The Gunning Fog Index estimates the years of formal education a reader needs to understand the text on first reading. It's calculated as: 0.4 × (average sentence length + percentage of complex words). Complex words are those with 3+ syllables. A score of 12 means a high-school senior can read it; 6 means a 6th grader can. Most business writing should target 10–12. Government plain-language guidelines in the US recommend under 10.

Question 3

How do I lower the reading level of my text?

Accepted Answer

The two biggest factors are sentence length and word complexity. Practical fixes: break any sentence over 20 words in two; replace Latinate words with Anglo-Saxon equivalents (use 'use' not 'utilise', 'start' not 'commence', 'help' not 'facilitate'); cut adverbs and nominalizations ('consideration of' → 'consider'); use active voice; avoid stacking multiple ideas in one sentence. Each of these changes directly improves all three readability scores.

Question 4

What reading level should web content target?

Accepted Answer

For general public websites and content marketing: aim for US Grade 7–8 (Flesch Reading Ease 60–70). For consumer product descriptions: Grade 6–7. For healthcare and government: Grade 6 maximum (US federal plain language guidelines). For B2B technical content and developer docs: Grade 10–12 is acceptable if the terminology is necessary. WCAG 3.1.5 (AAA) requires a lower-secondary-school (Grade 9) level alternative for content above that.

Formula	Output	Target for web	Best for
Flesch Reading Ease	Score 0–100 (higher = easier)	60–70	General readability benchmark, most widely used
Flesch-Kincaid Grade	US grade level (e.g. "Grade 8")	Grade 7–8	Education, plain-language compliance
Gunning Fog Index	Years of education needed	Score 8–10	Business writing, journalism
ARI (Automated)	US grade level	Grade 7–9	Technical documentation, formal writing
SMOG Index	Grade level from polysyllables	Grade 8	Healthcare, patient-facing communications
Coleman-Liau	Grade level from characters	Grade 7–9	Digital content, character-based calculation

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