How long should a paragraph be?
Most well-edited prose averages 3–5 sentences per paragraph — but the real rule is the one writing centres teach: ONE IDEA PER PARAGRAPH. This page is about the judgment call — when a paragraph should break. If you just want the numbers (average word counts, words-to-paragraphs conversion), see How many words are in a paragraph?
Paragraph length by medium
Academic writing tolerates long paragraphs because each one develops a complete claim: 100–200 words is normal. Web writing runs much shorter — screens make dense blocks hard to scan, so 40–80 words per paragraph keeps readers moving. Fiction is the most flexible: a paragraph can be a single word of dialogue or a page-long description, paced to the scene.
The consistent principle: one idea per paragraph. When the idea changes, the paragraph breaks.
Sourcing, as of 2025: Purdue OWL's basic rule is «Keep one idea to one paragraph» — new ideas always start new paragraphs; the UNC Writing Center's version is that every sentence should relate to «a single controlling idea, often expressed in the topic sentence». The word-count ranges below are editorial conventions layered on top of that rule, not rules themselves.
Signs a paragraph should break
Watch for a topic shift mid-paragraph, a new speaker in dialogue, a change of time or place, or a sentence starting with "However" that actually pivots the argument. On screens, any paragraph past six or seven lines earns a second look — even if the logic holds, the reader's eye needs the white space.
Paragraph length by writing type
| Web articles / blogs | 40–80 words (2–4 sentences) | paragraph counter |
| News writing | 25–50 words (1–2 sentences) | |
| Essays / academic | 100–200 words (4–8 sentences) | |
| Business documents | 60–120 words (3–5 sentences) | |
| Fiction | no fixed rule — paced to the scene |
Looking for the numbers instead?
How many words are in a paragraph? has the average word counts by writing type and a words-to-paragraphs conversion table — this page stays about when to break.
Craft guidance sourced from Purdue OWL («Keep one idea to one paragraph») and the UNC Writing Center (single controlling idea / topic sentence); word-count ranges are editorial conventions, labeled as such. Verified 2026-07-23.
Can a paragraph be one sentence?
Yes. Single-sentence paragraphs are standard in journalism and effective anywhere for emphasis. In academic writing they read as underdeveloped, so use them sparingly there.
How many paragraphs is 1,000 words?
Typically 7–13 paragraphs at essay density (75–150 words each), or 15–25 in web style. Count yours with the paragraph counter to see your average length.