The difference in one sentence
In active voice, the subject does the action. In passive voice, the subject receives the action. That is the entire distinction. Everything else follows from it.
Both sentences convey the same fact. The active version is shorter, clearer, and more direct. The passive version shifts emphasis to the draft rather than the editor — which is sometimes exactly what you want, and sometimes a problem.
Active vs passive voice examples in everyday writing
These are the most common rewrites you will need across general writing, emails and blog posts.
When passive voice is the right choice
Passive voice is not always wrong. There are three situations where it is the clearer and more appropriate option.
When the agent is unknown
If you do not know who performed the action, passive voice is the honest choice. "The window was broken overnight" is correct — you do not know who broke it. Forcing an active version ("Someone broke the window overnight") adds a vague subject that weakens the sentence.
When the agent is irrelevant
Scientific and technical writing frequently uses passive voice because who performed the action matters less than what happened. "The samples were incubated at 37°C for 24 hours" is standard scientific writing. The researcher's identity does not affect the finding.
When you want to emphasise the recipient
Passive voice shifts the spotlight to the object. "The award was given to a first-year student" emphasises who received the award. "The committee gave the award to a first-year student" puts the committee first. The passive version is better here if the student is the story.
Active vs passive voice in academic writing
Academic writing is one area where the active vs passive voice debate is genuinely contested. Older style guides recommended passive voice throughout ("it was found that..."). Modern academic writing increasingly prefers active voice where the author's role is relevant ("we found that..."). Check your institution's style guide, but lean toward active voice unless your field's conventions say otherwise.
How much passive voice is too much
A useful guideline is to keep passive voice below 10–15% of your sentences in general writing. Marketing copy and journalism sit closer to 5%. Academic writing can be higher. There is no absolute rule — the test is whether your writing feels direct and clear to the reader.
Use the SmartWriteTools Passive Voice Detector to count passive constructions in your text automatically. It catches both regular passive forms (was written, were reviewed) and irregular past participles (was known, was given, was taken) that are easy to miss by eye.
Quick reference: active vs passive voice
The agent matters · You want directness · You are writing for a general audience · The sentence feels slow or bureaucratic
The agent is unknown or irrelevant · You want to emphasise the recipient · You are following scientific or technical writing conventions · The agent would sound accusatory if named
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