TL;DR. Screenplay format is a public, stable standard: Courier 12pt, US Letter, 1.5-inch left margin, six elements at fixed indentations, roughly one minute of screen time per page. This guide covers the page setup, each element with correctly formatted samples, the timing math, the special cases (V.O., O.S., montages, intercuts), and a table of the mistakes that mark a script as amateur — plus what to automate and what to actually memorize.
Table of Contents
- Why Screenplay Format Exists
- Page Setup: Font, Margins, Paper
- The Six Core Elements
- A Correctly Formatted Page
- The Title Page
- One Page, One Minute: The Math
- Special Cases: V.O., O.S., Montages, Intercuts
- Common Formatting Mistakes
- What to Automate, What to Know
Why Screenplay Format Exists
Screenplay format looks arbitrary until you understand who reads a script and why. Then every rule turns out to be load-bearing.
The format is a timing instrument. In Courier 12pt with standard margins, one page averages one minute of screen time. Producers budget from page count, schedulers plan shoot days from it, and studio readers judge whether your "two-hour thriller" is actually a two-hour thriller. Change the font or squeeze the margins and you break the industry's measuring stick — which is why those rules are the least negotiable of all.
The format is a parsing protocol. A screenplay is read by more departments than any other document in filmmaking. The assistant director strips your scene headings into a shooting schedule. Casting reads only the character cues and dialogue. The location manager scans slugline location parts. Because every element lives at a known indentation, each department can extract what it needs at a glance. This is also why modern script software can derive scene lists, character lists, and location lists automatically from the text — the format was machine-readable decades before machines read it.
The format is a professional signal. Readers at agencies and production companies triage dozens of scripts a week. A correctly formatted page one says "this writer has read scripts"; a wrong one says the opposite, and busy readers extrapolate. Format cannot make a weak script good, but it decides whether your strong script gets read past page five.
Page Setup: Font, Margins, Paper
The physical standard, unchanged for decades:
| Setting | Standard | Why |
|---|---|---|
| Font | Courier 12pt (or Courier Prime / Courier Final Draft) | Monospaced — consistent line counts preserve page timing |
| Paper | US Letter (8.5" × 11"); A4 accepted outside the US | Industry convention; page math assumes it |
| Left margin | 1.5" | Extra half inch for brad binding |
| Right margin | 1.0" (ragged, no justification) | Readability; never justify text |
| Top / bottom margins | 1.0" | ~55 lines per page |
| Dialogue block | ~2.5" from left edge, ~3.5" wide | The narrow column reads at speaking pace |
| Character cue | ~3.7"-4.2" from left edge | Visually anchors each speech |
| Parenthetical | ~3.1" from left edge | Sits between cue and dialogue |
| Transition | Flush right | Marks an editing instruction |
| Page number | Top right, followed by a period | Standard: "23." — no page number on page one |
| Line spacing | Single, with one blank line between elements | Keeps the 55-line page |
Two things worth underlining. First, never justify the right edge — ragged right is correct, and full justification alters word spacing and breaks timing. Second, bold, italics, and underlining are used sparingly or not at all in traditional spec format; emphasis in action lines, when needed, is ALL CAPS (for sounds, key props, and a character's first appearance).
You will never set these margins by hand. Every screenwriting application — and the free, plain-text Fountain syntax — applies them automatically. The table exists so you can recognize a malformed page when you see one.
The Six Core Elements
Everything on a screenplay page is one of six elements. Master these and you have mastered the format.
1. Scene Heading (Slugline)
The scene heading tells production three things: interior or exterior, where, and when. All caps, on its own line:
INT. MOLLY'S DINER - NIGHT
EXT. BROOKLYN BRIDGE - DAY
INT./EXT. PARKED SEDAN - CONTINUOUS
The grammar is rigid: INT. or EXT. (or INT./EXT. for scenes straddling both, like a car), then the location, then a hyphen, then the time of day — almost always just DAY or NIGHT, occasionally DAWN, DUSK, CONTINUOUS (the scene follows the previous with no time gap), or LATER.
Keep location names consistent to the character. MOLLY'S DINER and THE DINER read as two different sets to a production office. Sub-locations chain with hyphens: INT. MOLLY'S DINER - KITCHEN - NIGHT.
Every new location or time jump gets a new slugline. No exceptions — sluglines are how the entire production counts scenes.
2. Action (Description)
Action lines describe what the audience sees and hears. Full width of the page, single-spaced, present tense, always:
The diner is empty except for RAY (60s, a face like a
crumpled receipt) wiping the same spot of counter he's
been wiping for a decade.
The door CHIMES. Ray doesn't look up.
The craft rules:
- Present tense, active voice. The film happens now. "Ray wipes the counter," never "Ray was wiping."
- Only the filmable. No thoughts, no backstory, no smells. If the camera can't photograph it and the microphone can't record it, it doesn't belong.
- Short paragraphs. Three to four lines maximum, then white space. Dense blocks of description are the single most common amateur tell.
- CAPS for first appearances, sounds, and critical props. A character's name is capitalized the first time they appear (
RAY (60s)), then written normally. Significant sounds (The door CHIMES) and must-notice objects can be capitalized to flag them for the sound and props departments.
3. Character (Cue)
The character cue names who speaks next. All caps, at its own indentation, above the dialogue:
RAY
We're closed.
Once you name a character, that exact name is theirs for the whole script — if the cue says RAY, it is never later RAYMOND or OLD MAN. Extensions in parentheses follow the cue when the speaker isn't visibly on screen: RAY (V.O.) for voice-over, RAY (O.S.) for off-screen (present in the scene, outside the frame), and RAY (CONT'D) when the same character continues speaking after an action line interrupts.
4. Dialogue
The words spoken, in the narrow center column beneath the cue:
RAY
We're closed. Been closed since
eleven. The sign, the lights, the
chairs on the tables -- all of it
means closed.
The narrow column is deliberate: it reads at roughly speaking pace, which is what keeps dialogue-heavy pages honest in the page-per-minute math. There are no craft-format rules for what characters say — only that the layout is exact. Two mechanical notes: dashes for interruptions (--) and ellipses for trailing off (...) are conventional; and if a speech must break across a page, (MORE) closes the first page and RAY (CONT'D) reopens the next.
5. Parenthetical (Wryly)
A brief actor or delivery note between the cue and the dialogue, in parentheses, lowercase:
RAY
(not looking up)
We're closed.
Parentheticals are the most abused element in amateur scripts. Use them only when the line would be misread without one — sarcasm that doesn't scan, a beat, an addressee change ((to Molly)). If the dialogue and context already imply the delivery, the parenthetical is clutter that actors are famous for crossing out. A useful budget: a few per scene at most, one or two words each. Never use them for action ("(slams the door and walks to the window)") — that belongs in an action line.
6. Transition
An editing instruction, all caps, flush right, ending in TO::
CUT TO:
DISSOLVE TO:
SMASH CUT TO:
The modern convention is to use transitions rarely. A new slugline already implies a cut, so CUT TO: between every scene is noise. Reserve transitions for moments where the edit itself is a storytelling beat — a SMASH CUT TO: punchline, a DISSOLVE TO: marking passing time. FADE IN: traditionally opens the script (flush left, the one exception) and FADE OUT. closes it.
A Correctly Formatted Page
Here is how the elements assemble, in plain text with standard indentation:
FADE IN:
INT. MOLLY'S DINER - NIGHT
The diner is empty except for RAY (60s, a face like a
crumpled receipt) wiping the same spot of counter he's
been wiping for a decade.
The door CHIMES. Ray doesn't look up.
RAY
We're closed.
MOLLY (30s, rain-soaked, holding a shoebox like it's a
bomb) stands in the doorway.
MOLLY
You're never closed.
RAY
(still not looking up)
Tonight we're closed.
She sets the shoebox on the counter. Slides it toward
him. Ray's rag stops mid-wipe.
MOLLY
Dad wanted you to have it.
Ray stares at the box. A long moment. He reaches for it --
SMASH CUT TO:
EXT. MOLLY'S DINER - NIGHT
Rain hammers the neon sign. Through the window: Ray,
alone, the shoebox open, its contents in his hands.
FADE OUT.
Read the sample twice — once for the story, once for the machinery. Notice how much white space a correct page carries, how the eye falls down the dialogue column, and how the slugline change does the cutting without a single camera direction.
The Title Page
The title page is deliberately minimal:
- Title — centered, about a third of the way down the page, in caps (underlining is a common convention, not a rule)
- "Written by" — centered, two lines below the title, with your name centered beneath it
- Contact information — bottom left or bottom right corner: email and phone (agents' details go here instead once you have representation)
That is all. No draft numbers, no dates, no "Registered WGA #123456," no copyright notices, no logline, no artwork. Every extra item reads as anxiety, and a date instantly ages your script ("this has been circulating since March"). The registration itself is worth doing — just don't advertise it on the cover.
One Page, One Minute: The Math
The most quoted rule in screenwriting holds up because of the constraints above: a monospaced font, fixed margins, ~55 lines per page, and a dialogue column that reads at speaking pace produce a page that averages about one minute of screen time. That single statistic is why the entire industry communicates in page counts:
| Script | Page target | Screen time |
|---|---|---|
| Feature (drama) | 100-120 pages | ~100-120 min |
| Feature (comedy, horror) | 90-105 pages | ~90-105 min |
| One-hour TV pilot | 55-65 pages | ~42-58 min with acts |
| Half-hour pilot (single-cam) | 28-38 pages | ~22-28 min |
| Short film | 5-15 pages | ~5-15 min |
The rule is a script-level average, not a scene-level guarantee. A page of rapid dialogue often plays faster than a minute; "The two armies collide" is one line and three minutes of screen time. Action-heavy scripts routinely run long against their page count; farces run short. But across a full screenplay the average is reliable enough that a 135-page draft from an unknown writer gets read as a 2 hour 15 minute movie — and usually doesn't get read at all.
The practical takeaway is that page count is a creative constraint, not an output statistic. When your draft lands at 128 pages, the answer is rarely smaller type (readers notice instantly) — it is cutting scenes, which is covered in the rewriting section of our step-by-step guide on how to write a screenplay.
Special Cases: V.O., O.S., Montages, Intercuts
Beyond the six core elements, a handful of situations have standard notation worth knowing.
Voice-over vs. off-screen. (V.O.) marks a voice not present in the scene's reality — narration, a phone voice heard by the audience only, an inner monologue. (O.S.) marks a character physically present in the scene but outside the frame — shouting from the kitchen. Mixing them up is a small but visible error.
Phone calls. For a conversation cutting between two locations, establish each location with its own slugline once, then write INTERCUT - PHONE CALL (or INTERCUT AS NEEDED on an action line). From then on, write the conversation continuously without repeating sluglines.
Montages. Introduce with MONTAGE: or BEGIN MONTAGE: on its own line, then list the images as short action beats, each on its own line (a leading dash is a common convention). Close with END MONTAGE. If the montage spans multiple locations, a variant uses lettered mini-sluglines (A) EXT. PARK - DAY).
Flashbacks. Append to the slugline: INT. MOLLY'S DINER - NIGHT (FLASHBACK), and mark the return with (PRESENT DAY) or END FLASHBACK. Consistency matters more than which convention you choose.
Dual dialogue. Two characters speaking simultaneously are formatted in side-by-side columns. This is one to use sparingly and let software handle — the layout is fiddly and the effect wears out fast.
Scene numbers. Spec scripts have none. Numbers beside sluglines belong to shooting scripts, added in pre-production and locked so departments can reference scenes. Adding them to a spec is a classic amateur tell.
Common Formatting Mistakes
The errors below are the ones readers actually see, ranked roughly by how loudly each one announces an amateur:
| Mistake | Why it hurts | Fix |
|---|---|---|
| Non-Courier font or shrunken margins | Breaks page timing; visible in one glance | Courier 12pt, standard margins, always |
Camera directions in a spec (CLOSE UP, ANGLE ON) | Reads as directing from the page | Imply the shot through what you describe |
| Dense action blocks (6+ lines) | Readers skip them; pacing dies | Break into 3-4 line paragraphs; cut the unfilmable |
| Parenthetical overuse | Actors cross them out; signals distrust of your own dialogue | Only when the line would be misread without it |
Inconsistent slugline locations (MOLLY'S DINER / THE DINER) | Production counts them as different sets | One canonical name per location, forever |
| Novelistic interiority ("she remembers, he feels") | Unfilmable; marks a prose writer | Externalize: a look, a line, an object |
CUT TO: between every scene | Noise; sluglines already cut | Transitions only when the edit is a story beat |
| Scene numbers on a spec script | Shooting-script machinery on a sales document | Remove; they're added in pre-production |
| Cluttered title page (dates, draft numbers, WGA #) | Reads as anxious and shopworn | Title, byline, contact info. Nothing else |
Wrong extension (V.O. for a character in the room) | Small, but pros notice | O.S. = present but unseen; V.O. = outside the scene's reality |
| Justified right margin | Alters spacing, breaks line counts | Ragged right, always |
| Page-break widows (cue on one page, dialogue on next) | Disorients the read | Let software handle breaks with (MORE) / (CONT'D) |
None of these is fatal in isolation. Three of them on page one is a rejection.
What to Automate, What to Know
Here is the honest division of labor in 2026: the rules above are yours to know; applying them is the software's job. Nobody hand-spaces character cues anymore. Any competent screenwriting application gives you Tab/Enter cycling between elements, correct indentation, automatic (MORE)/(CONT'D) page breaks, and standard-margin PDF export — and at that point format stops costing attention. This is genuinely a solved problem at every price, including free: a modern screenplay format editor auto-recognizes elements as you type and derives scene, character, and location lists directly from your sluglines and cues, and free tiers with no credit card required exist, so cost is no reason to fight a word processor.
Which software is a separate question with real trade-offs — industry-standard .fdx delivery, collaboration, AI assistance, pricing models. We've written two honest deep-dives: Final Draft vs Laper for the head-to-head against the industry standard, and the complete guide to AI screenplay editors for how AI-assisted editors handle formatting and everything else. Both will tell you when the traditional choice is the right one.
But don't let tooling research replace the ten minutes that matter: reread the formatted sample above, then open any produced screenplay (dozens are legally free online from studios during awards season) and study a page. Format fluency comes from reading scripts, and it pays off on every page you write. When you're ready to put the format to work on an actual story, start with our companion guide on how to write a screenplay — from concept to submission, the format is the easy part.