Readability & Word Count Checker
Analyze any URL or pasted text — Flesch scores, reading level, keyword density, and improvement tips.
Flesch Reading Ease
Scored 0–100. Higher = easier to read.
90–100 — Very easy (5th grade)
70–90 — Easy (6th–7th grade)
60–70 — Standard (8th–9th grade)
50–60 — Fairly difficult
0–50 — Difficult / academic
Most web content should aim for 60+. News sites aim for 60–70.
Flesch-Kincaid Grade Level
Corresponds to a US school grade level. A score of 8 means an 8th grader can understand it. For most blog content, aim for grade 6–9. Academic or legal content naturally scores higher. This doesn't mean dumbing down — it means writing clearly.
Sentence length
Average sentence length is the biggest driver of readability. Under 20 words per sentence is ideal for web content. Mix short punchy sentences with medium ones. Avoid sentences over 40 words — they lose readers before the full stop.
Keyword density
0.5%–2.5% — Ideal range for SEO.
Below 0.5% — Keyword may be too sparse.
Above 2.5% — Risk of keyword stuffing signals.
Density is a rough guide only. Natural usage matters more than hitting an exact percentage.
Reading time
Based on the average adult reading speed of 238 words per minute. Reading time shown in SERPs and on Medium/Substack increases click-through rate. For blog posts, 5–10 minute reads (1,200–2,400 words) tend to perform best for organic traffic and time-on-page signals.
How to improve readability
Break long sentences into two. Replace complex words with simpler ones. Use bullet points for lists of 3+ items. Add subheadings every 200–300 words. Write in active voice ("We found" not "It was found"). Short paragraphs (2–3 sentences) reduce visual fatigue on screen.