How many pages of script equal one minute of screen time — and does the rule always hold?

One page of a screenplay in standard format equals approximately one minute of screen time — a 90-page script projects a 90-minute film. The rule holds as a planning average, not a guarantee: empirical analysis puts real scripts closer to 1 page ≈ 55 seconds, and individual pages swing widely depending on how much action or dialogue they carry.

One screenplay page ≈ one minute of screen time is the industry-standard conversion, and it works because screenplay formatting is standardized — consistent font, margins, and layout for action and dialogue make page count a usable proxy for runtime regardless of who wrote the script. Five pages project five minutes; 110 pages project a feature just under two hours.

Does it always hold? No — treat it as an average with known drift. Stephen Follows' data-driven analysis of produced screenplays found scripts run about 9% longer on the page than their finished runtime — roughly 1 page ≈ 55 seconds in practice. And the average hides page-level variance in both directions: a single action line ("the battle rages") can play for several minutes on screen, while a page of rapid back-and-forth dialogue can clock well under a minute. TV scripts, commercials, and short-form work drift further still, because their pacing conventions differ from feature format. The rule is most reliable across a whole feature script and least reliable on any individual page.

How to time a script when the rule isn't precise enough. Read the script aloud with a stopwatch, acting out the beats at performance pace — that catches the action-heavy pages the page count undercounts. For voiceover-driven formats like video essays, explainers, and ads, skip pages entirely and time by word count: spoken narration runs roughly 130–150 words per minute, which is the conversion working creators on Reddit consistently report using.

Why the rule matters in AI video generation. Page count is how duration should be derived when generating film from a script — as one filmmaker testing AI film agents put it, asking to generate the first five pages is effectively asking to generate the first five minutes; the duration isn't decided independently. Tools like the invideo agent apply this convention during script analysis: it scans the full script, builds a context library of characters, locations, and plot points, and derives scene duration from the pages themselves — so you direct by page range rather than setting clip lengths as a separate decision.

Watch some of these to see what works for you:

Generally films are written in a way that each page of script is about equivalent to 1 minute of screen time. So, by asking to generate the first five pages, I'm effectively asking to generate the first five minutes of the film. I don't decide the duration independently.

— a filmmaker documenting an AI film production test