Paste an ArcGIS StoryMap URL to calculate Flesch-Kincaid grade level and five other readability metrics. Story text is fetched directly from the ArcGIS REST API.
reading difficulty assessment
ArcGIS StoryMap URL
Six readability metrics calculated
Flesch-Kincaid GL
Most widely used grade-level formula in education
Flesch Reading Ease
0–100 scale; higher score = easier to read
Gunning Fog
Penalizes long sentences and polysyllabic words
SMOG Index
Preferred for health literacy assessments
Coleman-Liau
Character-based — no syllable counting needed
Auto. Readability
ARI — focuses on characters-per-word ratio
Fetching story from ArcGIS…
Connecting to the ArcGIS REST API
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Flesch-Kincaid Grade Level
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Consensus average (all metrics):—
Flesch Reading Ease
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0 — Very Confusing50 — Standard100 — Very Easy
Unlike grade-level scores, higher = easier to read. A score of 60–70 is considered plain English for a general audience.