Flesch-Kincaid Calculator

Web

Freedom report

Two barsScore 6.3

Flesch-Kincaid Calculator is ranked #15 of 25 in readability checkers on Freedom251. It runs on Web. There is a free plan.

Flesch-Kincaid Calculator plans and pricing

Free Free No signup required · no stated usage limit flesch-kincaid-calculator.com · 9 Oct 2026

Readability scores: The calculator reports Flesch Reading Ease on a 0–100 scale and an estimated U.S. school grade level.
Additional metrics: It also reports sentence counts, word counts, syllables, and average sentence length.
Text recommendations: The site says it provides recommendations to improve readability for a target audience.
Text input: Users can paste text ranging from short paragraphs to full articles for analysis.
Browser processing: The site says submitted text is processed in real time and discarded immediately after analysis, and is not stored or transmitted.
Shareable results: If a user creates a shareable link, the site stores analysis scores and metrics but not the original text, and retains those results for one year.
Analytics: The privacy policy says the site uses PostHog analytics, which may collect usage, device, browser, and session recording information if enabled.
Security: The site says it implements technical and organizational security measures but does not guarantee absolute security.
Related calculators: The site links to calculators for SMOG, Gunning Fog, Dale-Chall, ARI, Coleman-Liau, Linsear Write, Lix, and Rix, among others.
Intended users: The site describes the calculator as useful for content teams, educators, agencies, and public-sector writers.
Price from: Free

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