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Passive Voice Detector

Detect passive voice constructions and show passive percentage.

Find and fix passive voice in your writing

Paste any text — a blog post, email, essay, or report — and the detector highlights every passive voice construction in seconds. The passive voice percentage is calculated so you know at a glance whether your writing leans too passive.

How to identify passive voice

Passive voice follows a predictable pattern: a form of the verb to be (is, was, were, been, being) followed by a past participle (eaten, written, built). The grammatical subject receives the action rather than performing it.

Common passive constructions include: was approved, were told, has been submitted, is being reviewed. The giveaway is that you can always add “by someone” at the end — “The decision was made by the committee.”

Active vs passive: side-by-side examples

Seeing both versions together makes the difference obvious:

  • Passive: The application was rejected by the hiring manager. — Active: The hiring manager rejected the application.
  • Passive: An error was found in the report. — Active: We found an error in the report.
  • Passive: The survey was completed by 500 participants. — Active: Five hundred participants completed the survey.

Active sentences are shorter, clearer, and assign responsibility directly. Readers process them faster because the subject-verb-object order matches how we naturally think.

When passive voice hurts your writing most

Passive voice does the most damage in introductions, headings, and calls to action — the parts readers scan first. A passive headline like “Costs can be reduced by switching providers” is weaker than “Switch providers and cut costs immediately.” In emails and cover letters, passive voice can make you seem less decisive or accountable, even unintentionally.

For business writing, marketing copy, and blog content, a passive voice rate above 10% is a reliable signal to revise. Use this tool to scan your draft, then target the highlighted sentences one by one.

Common use cases

Content writers paste blog drafts before publishing to identify passive sentences in introductions and headings — the highest-impact sections to keep active. Job applicants run cover letters through the detector to ensure they sound decisive and action-oriented rather than tentative. Editors reviewing technical documentation use the percentage score to gauge overall writing quality before line-editing individual sentences. Academics use it to check whether passive voice is intentional (for method sections) or accidental (in discussion and conclusion sections where active voice reads better).

Frequently asked questions

Why should I avoid passive voice?
Passive voice obscures who is doing the action and makes sentences longer and harder to parse. Active voice is more direct, engaging, and easier to read. Most style guides recommend keeping passive voice under 10% of sentences.
When is passive voice acceptable?
Passive voice is appropriate when the subject is unknown (The car w), when the action is more important than the actor (The report w), in scientific writing (The solution w to 100°C), or to avoid assigning blame.
What is an example of passive vs active voice?
Passive: The report w by the team. Active: The team wrote the report. Passive: Mistakes were made. Active: We made mistakes. Converting to active makes writing clearer and more accountable.
What percentage of passive voice is acceptable?
Most writing coaches suggest keeping passive voice under 10% of your total sentences. Blog posts and marketing copy benefit from even lower rates — around 5%. Academic and scientific writing allows up to 20–25% because the method often matters more than who performed it.
Does passive voice affect SEO?
Readability tools like Yoast and Hemingway penalise high passive voice rates because they correlate with harder-to-read content. Search engines favour content that users engage with, so improving readability indirectly helps SEO. Aim for active, punchy sentences in headings and the first paragraph especially.
Can I use this tool for academic writing?
Yes. Paste your essay or research paper to check passive voice usage. Academic writing often uses passive intentionally (e.g., 'Samples were collected'), so a higher rate is expected. Use the highlighted output to review each instance and decide if the passive is deliberate or accidental.

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