Passive Voice Readability Calculator

Paste your text and review passive patterns fast. Compare readability scores with clear writing signals. Download results, examples, and focused editing notes today online.

Calculator Input

Example Data Table

Sentence Passive Signal Suggested Active Revision
The policy was approved by the board. was approved by The board approved the policy.
The draft was reviewed before launch. was reviewed The editor reviewed the draft before launch.
The team improved the page. No passive signal No change needed.

Formula Used

Passive sentence percent: passive sentences ÷ total sentences × 100.

Passive density: passive matches ÷ total words × 100.

Flesch Reading Ease: 206.835 − 1.015 × words per sentence − 84.6 × syllables per word.

Flesch-Kincaid Grade: 0.39 × words per sentence + 11.8 × syllables per word − 15.59.

Gunning Fog: 0.4 × words per sentence + 100 × complex words per word.

SMOG: 1.043 × square root of complex words × 30 ÷ sentences + 3.1291.

How to Use This Calculator

  1. Paste your draft into the text box.
  2. Select strict, balanced, or broad detection.
  3. Enter your passive voice, reading ease, and grade targets.
  4. Tick the sentence option if you want marked examples.
  5. Press the calculate button.
  6. Review the result shown above the form.
  7. Download the CSV or PDF report if needed.

Passive Voice and Readability Guide

Passive voice can make a sentence longer, softer, or harder to scan. It is not always wrong. It is useful when the action matters more than the actor. Yet too much passive wording can slow readers. This calculator helps you spot patterns that deserve review. It also joins passive voice checks with readability scores. That gives a wider view of draft quality.

Why Passive Voice Matters

Readers often prefer direct sentences. A direct sentence names the actor early. It shows who does what. Passive voice can hide that actor. For example, “The report was approved” gives less detail than “The manager approved the report.” Both may be correct. The better choice depends on purpose. Business pages, guides, and support text usually need quick meaning. Active wording often helps there.

How Readability Helps

Readability formulas estimate reading effort. They use sentence length, word length, syllables, and complex words. These scores do not judge style perfectly. They give warning signs. A low reading ease score may mean the text needs shorter sentences. A high grade level may mean more plain words are needed. When passive voice and hard readability appear together, revision becomes more important.

Better Editing Decisions

Use the result as a review map. Look first at sentences marked as passive. Then decide whether the actor should be named. Replace weak forms only when meaning improves. Keep passive wording when it sounds natural, formal, or necessary. Legal, scientific, and process writing sometimes needs it. The aim is not zero passive voice. The aim is clear control over tone and sentence flow.

Practical Writing Tips

Break long sentences into smaller parts. Place the subject near the verb. Use strong verbs when possible. Remove empty phrases that add no meaning. Read the text aloud after editing. If a sentence feels delayed, check its structure. If a score looks high, simplify the wording. Repeat the check after revision. Small changes can make a page more readable, direct, and helpful.

When to Keep It

Keep passive wording when the actor is unknown, obvious, or private. Keep it when the object deserves attention. Instructions may also use it well. A balanced draft can mix both forms. The key is intent, not a fixed ban in practice.

FAQs

What does this calculator check?

It checks passive voice patterns, reading ease, grade level, complex words, sentence length, and several common readability indexes.

Is passive voice always bad?

No. Passive voice can be useful when the actor is unknown, private, or less important than the action.

How accurate is passive detection?

It uses rule-based pattern matching. It is helpful for review, but human judgment is still needed for final editing.

Which detection mode should I use?

Use balanced mode for most drafts. Use strict mode for fewer false matches. Use broad mode for deeper review.

What is a good passive voice percentage?

Many web drafts work well below ten percent. Formal, legal, or scientific writing may need a higher amount.

What is Flesch Reading Ease?

It estimates how easy text is to read. Higher scores usually mean simpler sentences and easier wording.

Can I export the result?

Yes. After calculation, use the CSV or PDF button to save the report for later review.

Does this replace manual editing?

No. It highlights likely issues. You should still read each sentence and decide what improves meaning.

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