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Readability Consensus Score

Flesch–Kincaid、Gunning Fog、SMOG、Coleman-Liau、ARI、Linsear Write、FORCAST、Dale-Chall を同時に実行。コンセンサス学年と、各公式の一致・不一致を確認できます。

日本語 向けではありません

このツールは英語(および関連言語)向けに調整されています。日本語 の結果は意味をなさない可能性があります。

使うべき場面

Use the consensus score when you need one defensible grade-level number and you don't know which formula the audience cares about. For health writing you should still report SMOG; for K-12 still report Spache or Dale-Chall. The consensus shines for general business, marketing, or web copy.

他の指標との比較

The consensus replaces running each formula tab-by-tab. The trade-off: you lose the per-formula context (tips, pitfalls) that each individual tool provides. Use both — consensus for the headline number, individual formulas to diagnose why.

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仕組み

The consensus tool runs nine readability formulas on the same text in parallel: Flesch–Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI, Linsear Write, FORCAST, Dale-Chall, and a grade-converted Flesch Reading Ease.

It reports the median grade as the consensus and the spread (max − min) as an agreement indicator.

High agreement (spread < 2 grades) means all formulas concur. Wide spread suggests mixed sentence lengths or vocabulary.

よくある質問

Which formulas are included?

Flesch–Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI, Linsear Write, FORCAST, Dale-Chall, and a grade-converted Flesch Reading Ease.

Why is consensus better than a single formula?

No single formula is reliable across every text type. The median across many formulas is robust to outliers and more defensible as a single number.

What does "high agreement" mean?

Spread less than 2 grade levels between the highest and lowest formula. Wide spread (>5 grades) means the formulas disagree, often due to mixed sentence lengths or vocabulary.

実例

入力

Standard business prose: 4 sentences, mix of common and technical vocabulary.

出力

Consensus grade 10.4 — moderate agreement (spread 3.1 grades).

Eight formulas land between grade 8.6 and 11.7. The median (10.4) is the single most defensible grade level when no formula has special claim on the text type.

よくある落とし穴

  • A wide spread (>5 grades) usually means mixed sentence lengths or vocabulary — the median may be misleading.
  • Each formula has different calibration. The median is robust to outliers but the average can be skewed by SMOG (which is the strictest).
  • Formulas all assume running prose. Bulleted lists, headers, and tables produce unreliable numbers across the board.
  • Don't use the consensus for ESL, primary-grade, or health copy — use the specialized formula instead.

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