Passive Voice Checker - Free Online Detector

A passive voice checker finds sentences where the subject receives the action, such as "The report was written by Sarah." Paste your draft into this free tool and it shows the percentage of passive sentences, a rating from Excellent to Too Much Passive Voice, and the exact pattern it matched in each flagged sentence.

What Is Passive Voice in Writing?

Passive voice is a sentence structure in which the subject receives the action instead of performing it. In "Sarah wrote the report," Sarah does the action, so the sentence is active. In "The report was written by Sarah," the report is the subject and the doer moves to the end or disappears.

Most passive sentences follow one formula: a form of the verb "to be" (am, is, are, was, were, be, been or being) plus a past participle such as written, corrected or approved. The doer is optional. "The report was written" is still passive, and it leaves the reader wondering who wrote it.

Passive voice vs active voice

Active sentences are usually shorter and clearer because they put the doer first and follow the order readers expect: who did what. Passive sentences add helper verbs, can hide responsibility and can make a paragraph feel slow. Passive voice is not a grammar error, though. It is a style choice, and a good edit means choosing it on purpose.

How the percentage is calculated

The tool splits your text into sentences, flags each one that matches a passive pattern, and divides the flagged sentences by the total. If 3 of 12 sentences are flagged, your passive voice percentage is 25%. The result is rounded to one decimal place.

How to Use the Passive Voice Checker

You only need a block of text and one click. Here is the full process, from pasting to rewriting.

1. Copy your text from Word, Google Docs, your CMS or an email. Checking passive voice in Word or Google Docs works the same way: copy, then paste.
2. Click into the Enter Your Text box and paste the content. The box reads "Paste your content here to check for passive voice..."
3. Click Check Passive Voice. The button briefly shows "Checking..." while it works.
4. Read the large percentage and the rating under it, then the line that says how many passive sentences were found out of the total.
5. Scroll through the sentence list. Under every flagged sentence you will see "Passive pattern detected:" followed by the match, for example was ... written.
6. Rewrite the flagged sentences in your editor, paste the new version and run the check again to compare scores.

Worked Example: From 40% Passive to 0%

A short sample shows how the numbers work. Suppose you paste these five sentences: "The report was written by Sarah. Our team reviews every draft. Mistakes are corrected before publishing. Readers love short sentences. We publish new guides every week."

The tool flags two sentences. The first shows the pattern was ... written and the third shows are ... corrected. Two passive sentences out of five total gives 2 ÷ 5 = 40%, which lands in the Too Much Passive Voice band.

Now rewrite the two flagged sentences: "Sarah wrote the report." and "We correct mistakes before publishing." Paste the revised text and run the check again. Zero of five sentences are flagged, so the score drops to 0% and the rating becomes Excellent. The first rewrite is also two words shorter, which is typical when you move the doer to the front.

Notice that with only five sentences, each one moves the score by 20 points. Short samples swing wildly, so judge your writing on a few full paragraphs rather than a single line.

How Do You Read and Act on the Results?

The rating tells you how much of your text is passive, and the sentence list tells you where to edit. Start with the rating, then work through the flagged sentences one at a time.

These bands follow a widely used rule of thumb: keep passive sentences to roughly one in ten for general web writing. Technical, legal and scientific text often runs higher, and that can be perfectly fine.

How to turn a flagged sentence into an active one

First, ask who or what performs the action. Make that person or thing the subject, then pick the verb that describes what they do. "Your account will be charged on the 1st" becomes "We charge your account on the 1st." "Mistakes were made" becomes "We made mistakes," which also makes it clear who owns the problem.

When the doer is truly unknown, name a likely one, address the reader with "you," or reword the sentence around a stronger verb. If you want more help with phrasing, an article rewriter can trim wordy phrases once you have fixed the structure.

What the pattern line tells you

The "Passive pattern detected" line shows the be-verb and the word the tool treated as a participle, joined by dots. Read it as a quick sanity check. If the second word is a real participle such as corrected or approved, the flag is trustworthy. If it is a plain word such as "not" or "an," you can ignore that flag.

Who Should Use a Passive Voice Detector?

Anyone who edits text for clarity can use it, and it pays off most in these situations:

• Bloggers and SEO writers who want direct, scannable posts. Run each draft before publishing, and check your headline separately with a headline analyzer.
• Students tightening essays, where passive sentences often hide weak claims and missing sources.
• Business writers drafting emails, proposals and reports that need clear ownership of tasks.
• Support and documentation teams who want instructions that tell the reader exactly what to do.
• Editors reviewing freelance work who need a fast, objective way to spot sluggish sentences.

If your goal is a different feel rather than fewer passives, a tone of voice changer can help you shift a draft toward a more casual or professional register.

When Is Passive Voice the Right Choice?

Passive voice is the better choice when the doer is unknown, unimportant or less interesting than the result. "The window was broken overnight" works when nobody knows who did it. "Samples were heated to 60°C" works in a methods section, where the procedure matters more than the researcher.

It also helps when you want to keep the focus on the receiver of the action: "Our founder was awarded a regional prize." Do not chase a score of zero. Aim for passive sentences that are deliberate and active sentences everywhere else.

Best Practices and Troubleshooting Tips

• End every sentence with punctuation. The tool starts a new sentence only after a period, exclamation mark or question mark. Bullet points and headings without punctuation get merged into the next sentence, which skews the total. Add periods before you check.
• Check enough text. One flagged sentence out of four is already 25%. A few paragraphs give a more useful picture than a single paragraph.
• Verify the sentence count. If the total looks wrong, compare it with a line counter that also counts sentences, then fix missing punctuation.
• Edit in small rounds. Rewrite one section, paste it again and watch the percentage fall. This shows which edits matter.
• Do not rewrite quotes. Quoted speech and titles often contain passive phrases you should leave as written.
• Look at the matched pattern first. A flag on "is ... not" or "was ... in" is a false alarm, so skip it and move on.

What Are the Limits of This Check?

This tool looks for a form of "to be," an optional adverb ending in "ly," and then a word that looks like a past participle. It does not parse full grammar, so treat the result as a strong hint, not a verdict.

False flags can happen because some ordinary words ending in d, t or n follow a be-verb, as in "The door is not open." Misses can happen too. Contractions such as "it's done," "get" passives such as "got fired," and participles that do not end in -ed, -en, -d, -t or -n (made, done) may slip past. Common adjective-like words such as interested, tired or excited are deliberately skipped.

Each sentence counts once, even when it holds two passive phrases. The tool also checks for passive voice only, so for spelling, punctuation and other style problems, run your text through a grammar checker too.

Paste your draft into the box above, click Check Passive Voice and see which sentences deserve a rewrite. For more ways to polish your writing, browse the content writing tools collection.