テキストがどの程度フォーマルまたは非公式に聞こえるかを推定します。スラング、短縮形、代名詞、文の長さ、受動態、ラテン語源の語彙を考慮します。
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。
Use to match tone to audience — academic submissions, business proposals, conference talks, or marketing emails. The target selector gives you an instant fit check.
Where lexical density measures information packing and readability measures grade level, formality measures *register* — a third independent axis.
Formality is a 0–100 score combining slang count, contraction count, first/second-person pronoun rate, passive voice frequency, formal markers ("furthermore", "consequently"), and average word length.
The target selector adjusts which range the score should fall into — academic (70–100), business (50–80), or casual (0–45).
Suggestions are generated when your text falls outside the target range, focusing on the most impactful adjustments.
It blends slang count, contractions, first/second-person pronouns, sentence length, passive voice, and Latin-root vocabulary into a single 0–100 score.
Academic ~70–100, business ~50–80, casual ~0–45. The target selector adjusts the suggestion thresholds.
Not yet — the slang and formal-marker lists are baked in. Submit feedback if you have a list for a specific genre.
入力
Hey! Just wanted to let you know we're gonna ship the update next week. Pretty cool, right?
出力
Formality: 14 / 100 — Very casual.
Slang ("gonna", "cool"), heavy contractions, multiple first-person pronouns, and a casual hook all drive the score into the very-casual band.