Passive Voice Checker

Why Check for Passive Voice

Passive voice flips the natural order of a sentence. Instead of 'The cat chased the mouse' (active), passive says 'The mouse was chased by the cat'. The receiver of the action moves to the front, and the actor either disappears or comes at the end. This makes writing wordier, less direct, and sometimes evasive — passive voice is famous for hiding responsibility ('mistakes were made').

How It's Detected

The checker scans every sentence for a 'be' verb (is, was, were, been, being, are, am, be) followed by a past participle (typically -ed or -en endings). This pattern catches the vast majority of English passive constructions. Some edge cases — like 'she was happy' or compound tenses like 'had been writing' — may produce false positives or misses. Use the flagged examples to verify.

What Percentage to Aim For

Most style guides recommend under 10% passive voice for clear writing. Hemingway averaged below 5%. Strong journalism stays under 10%. Marketing copy and blog posts target 5-10%. Academic writing often reaches 15-25%, which is acceptable in that genre but feels indirect to general readers. Scientific writing may be 20-30% because focus is on the work, not the worker. For full writing analysis including adverb count and quality scoring, try the Text Analyzer.

Frequently Asked Questions

What is passive voice?

Passive voice is when the subject of a sentence receives the action instead of performing it. 'The ball was thrown by John' is passive — the ball is the subject but John performs the action. Active voice flips this: 'John threw the ball.' The actor comes first and the action is direct. Passive voice often hides who's responsible for an action.

Is passive voice always wrong?

No. Passive voice has legitimate uses: when the actor is unknown ('the window was broken'), when the actor is unimportant ('the report was filed yesterday'), when the receiver matters more ('the patient was treated'), or in scientific writing where focus is on the experiment, not the experimenter. Use it deliberately — just not by accident.

How does this checker detect passive voice?

It scans for sentences containing a form of 'to be' (is, was, were, been, being, are, am, be) followed by a past participle (typically a verb ending in -ed or -en). This catches most English passive constructions. Some edge cases — like state-of-being sentences ('she was tired') — may be flagged as false positives.

What's a good passive voice percentage?

Most style guides recommend keeping passive voice under 10% of sentences for clear writing. Hemingway scored under 5%. Strong journalism averages 5-10%. Academic writing can be 15-25%. Above 20% the writing usually feels indirect or evasive. Below 5% is excellent — you're consistently writing in active voice. The Hemingway Editor recommends staying below 5%.

Can I get false positives?

Yes. Sentences using 'be' verbs without being passive can be flagged: 'The book is on the table' or 'She was happy.' Compound passives like 'The decision had been made' may not match the simple regex pattern. Use the percentage as a guide, not an absolute. Check the flagged examples to confirm they're truly passive.

How do I rewrite passive voice as active?

Identify who or what is performing the action. Move them to the front. Replace the 'be' + past participle with a direct verb. 'Mistakes were made by the team' → 'The team made mistakes.' 'The book was written by the author' → 'The author wrote the book.' Active voice is typically shorter, clearer, and assigns clear responsibility for actions.