How long will your dialogue take on screen?

Dialogue length is measured in seconds

When you adapt a novel, the dialogue you carry over is the part of the book most likely to survive word for word. It is also the part most likely to run long. A conversation that reads in forty seconds on the page can take three or four minutes to play, because actors speak more slowly than readers read, they pause, and the camera spends time on the person listening as well as the person talking.

This calculator turns dialogue into screen time. You give it a word count or paste the lines, choose a speaking pace, and say how much of the scene is pauses and reactions. It returns the spoken time, the full screen time, the equivalent script pages two different ways, and, if you set a target length, how many words fit that target.

It works at the level of a scene or a sequence. If you want the running time of a whole book as a film, the book to film runtime estimator works from your manuscript's total word count instead. The two answer different questions: one asks how long the film will be, this one asks how long a particular conversation will take.

How fast people speak

Speaking rate is measured in words per minute. There is no official figure for screen dialogue, and real rates vary a great deal with the speaker, the language, the emotion and the material. Everyday English conversation is commonly put at roughly 120 to 160 words a minute. Read-aloud material such as audiobook narration is often planned in the 150s. Fast, overlapping screen dialogue, the kind found in workplace dramas and screwball comedy, can run well past 180.

The calculator uses three planning rates:

These are deliberately round numbers in the middle of the commonly quoted ranges. They are not measurements of any actor or film. The output table always shows all three, so you can see how much the choice matters before you commit to one.

A useful check on your own scene: read it aloud at the speed you imagine the characters talking, with a stopwatch running, and divide the word count by the minutes. If you get 140, use the normal pace and expect the scene to run slightly longer than the estimate.

The four parts of the calculation

1. Spoken time

Spoken time is the dialogue's word count divided by the speaking rate, converted to seconds. Only words that are actually spoken count: not character names, not parentheticals, not action lines. When you paste text, the calculator strips those out for you.

2. Speaker changes

Every time the speaker changes, there is a short beat while the next person picks up the line. Film editors can tighten this, and actors can overlap, but in most scenes there is some gap. The calculator allows half a second per change. For 30 turns there are 29 changes, which adds 14.5 seconds.

Half a second is a planning assumption, not a standard. If you would rather not model it separately, set the number of turns to 1 and put the time into the pause share instead.

3. Pauses and reactions

This is the part writers most often forget. In a finished scene, a share of the running time has nobody talking: a look between two characters, a silence after bad news, a reaction shot, someone pouring a drink or crossing the room. The calculator treats that as a percentage of the finished scene. If the pause share is 15 percent, talking (including the speaker changes) fills the other 85 percent, so the total is the talking time divided by 0.85.

4. Pages, two ways

The calculator gives two page counts. Pages by timing applies the industry rule of thumb that one script page plays as about one minute, so it equals the screen time in minutes. Pages by layout estimates how much paper the dialogue takes: each speaker turn gets a line for the name, about one line of dialogue for every six words in the narrow dialogue column, and a blank line, with 55 lines to a page. The section below explains why the two often disagree.

Worked example: a two-person scene

The first example on this page is an illustrative two-person scene: 450 words of dialogue, 30 speaker turns, normal pace and 15 percent pauses. Here is the arithmetic, step by step, using the same numbers the tool shows.

1. Spoken time. 450 words divided by 150 words a minute is 3 minutes, or 180 seconds. The tool shows 3:00.
2. Speaker changes. 30 turns means 29 changes. 29 times 0.5 seconds is 14.5 seconds, shown rounded as 15 sec.
3. Talk subtotal. 180 plus 14.5 is 194.5 seconds, shown as 3:15.
4. Pauses. With 15 percent pauses, talk fills 85 percent of the scene. 194.5 divided by 0.85 is 228.8 seconds. That rounds to 229 seconds, or 3:49.
5. Pauses alone are therefore 228.8 minus 194.5, about 34 seconds.
6. Pages by timing. 228.8 seconds is 3.8 minutes, so about 3.8 pages.
7. Pages by layout. 450 words over 30 turns is 15 words a turn. At six words a line, 15 words needs 3 lines (2.5 rounded up). Each turn takes 1 name line, 3 dialogue lines and 1 blank: 5 lines. 30 turns times 5 lines is 150 lines, and 150 divided by 55 is 2.7 pages.

With a 4-minute target, the scene fits with 11 seconds to spare, so the verdict is a pass.

Now set the target to 3 minutes, which is the second example. The scene is 49 seconds over. To find how many words fit, the tool runs the calculation backwards:

1. A 3-minute target is 180 seconds.
2. Talk can fill 85 percent of it: 180 times 0.85 is 153 seconds.
3. Take away the 14.5 seconds of speaker changes: 138.5 seconds of speech.
4. At 150 words a minute, which is 2.5 words a second, 138.5 seconds holds 346 words.

So the dialogue needs to come down from 450 to 346 words, a cut of 104. That is a little under a quarter of the scene, a meaningful trim but not a rewrite. If the scene were more than 50 percent over its target, the tool would return a fail and suggest a rewrite or a split into two scenes instead.

Why layout pages and timed minutes disagree

In the worked example, the dialogue fills 2.7 pages of paper but plays for 3.8 minutes. That is not a mistake in either number. It shows the limit of the one-page-a-minute rule when you apply it to dialogue on its own.

The rule is an average across whole scripts, where pages mix dialogue, action, scene headings and white space. A page of pure dialogue holds a different amount of material from a page of dense action, and both differ from a page of short one-line exchanges. Pauses and reactions also take screen time without taking any space on the page, unless the writer adds action lines for them.

Three practical consequences follow:

• Long speeches play longer than their pages suggest. A page holding a few long speeches can contain far more words than a page of quick exchanges.
• Short back-and-forth exchanges use lots of paper. Each one-word reply still costs a name line and a blank line, so a page of rapid exchanges can play in well under a minute.
• Silent beats are invisible on the page. If a scene depends on long looks and silences, write some of them as action lines, or your page count will understate the scene.

When the two figures differ by more than about 30 percent, the calculator says so. In that case, a timed read-through will tell you more than either estimate.

Choosing a pause share

The pause share is the hardest input to estimate, because it depends on how the scene is directed as much as how it is written. These planning ranges are a starting point, not measurements:

Look at your action lines for clues. If the scene has several lines describing what characters do between speeches (she turns to the window, he picks up the letter), use the higher end. If it is almost all dialogue, use the lower end. The calculator caps the pause share at 60 percent, because above that the scene is mostly silence and the dialogue estimate stops being useful.

Picking a pace scene by scene

Pace belongs to the scene, not the film. Most films move between all three: a slow opening conversation that establishes a relationship, quick exchanges during a crisis, a slow confession near the end. Timing every scene at one rate hides that variety and usually underestimates the slow scenes.

A few signals help you choose:

• Who is talking. Some characters talk fast by nature: the nervous assistant, the lawyer on deadline, the teenager who never finishes a sentence. Others weigh every word. Pace a scene to its dominant speaker.
• What is at stake. People speed up when they are excited, frightened or arguing, and slow down when the news is bad or the decision is heavy.
• How much the audience must absorb. Scenes that carry plot information, such as a plan explained or a clue revealed, need to be slow enough to follow. Scenes that carry mood can run fast because the exact words matter less.
• The genre's habits. Comedy often plays fast so that jokes land close together. Horror and drama often play slow so that silences build tension.

When you are unsure, time the scene at normal pace, then look at the slow row in the comparison table. If the scene only fits its slot at fast pace, assume it is too long rather than assuming the actors will speed up.

Cutting dialogue to fit

When a scene runs over, the calculator gives a word budget. Reaching it is a writing job, and some cuts are easier than others. These usually come first:

1. Greetings and goodbyes. "Hello," "How are you," "See you tomorrow": screen scenes usually start late and leave early, so most of these can go.
2. Lines that repeat what we have seen. If the audience watched the car crash, nobody needs to describe it.
3. Answers that could be actions. A nod, a shrug or a door closing can answer a question in a second of screen time.
4. Repeated points. Novels often let a character make the same argument twice for emphasis. On screen, once is usually enough.
5. Names and courtesies. Characters rarely need to address each other by name when we can see who is talking.
6. Explanations the next scene will show. If a plan is about to be carried out, the audience can learn it by watching.

Cut in that order and you protect the lines that carry character and conflict, which are the reason the scene exists. Run the calculator again after each pass. Expect a real cut, not a tidy-up: in the worked example above, fitting three minutes meant removing 104 of 450 words, about 23 percent.

Timing mistakes to avoid

• Counting action as dialogue. Only spoken words belong in the word count. Including stage directions makes every estimate too long.
• Ignoring the listener. A scene where one character talks and the other reacts still needs time for the reactions. Set a pause share even for monologues.
• Assuming the written order is the edited order. Editors often trim the beginning and end of scenes. Treat the estimate as the scene as written, before the edit.
• Using one scene's rate for the whole script. A fast argument and a quiet goodbye in the same film will run at different rates.
• Treating the estimate as a schedule. Shooting a scene takes far longer than the scene runs on screen. This tool estimates screen time, not production time.

Words per turn and the monologue warning

The calculator divides the word count by the number of turns to get the average length of a speech. Ordinary screen conversation tends to move in short turns, often a sentence or two each. When the average climbs past about 60 words, each speech takes around half a minute or more to deliver at normal pace, and the scene starts to play as a series of monologues.

The third example on this page shows this. It is an illustrative confession scene: 600 words in only 6 turns, at slow pace with 25 percent pauses.

1. 600 words at 120 a minute is 5 minutes of speech: 5:00.
2. 5 speaker changes add 2.5 seconds: 302.5 seconds of talk.
3. With 25 percent pauses, 302.5 divided by 0.75 is 403.3 seconds: 6:43.
4. Each turn averages 100 words, about 50 seconds of uninterrupted talk at this pace.

There is no target set, so the verdict comes from the turn length: a warning that the speeches average 100 words. That is not necessarily wrong. A confession may need to be long. But it is worth checking whether every speech earns its length, and whether a reply, an interruption or a physical action would break the scene up without losing anything.

Counting dialogue from pasted text

If you paste text, the calculator ignores the word count field and counts for you. It recognises three layouts:

• Screenplay format. A character name in capitals on its own line counts as one turn. Parentheticals in brackets are skipped. Every other line is counted as spoken words.
• NAME: format. A line starting with a name and a colon counts as one turn, and the words after the colon are counted.
• Novel prose. If there are no names, the calculator counts only words inside quotation marks, and treats each paragraph containing a quote as one turn. Dialogue tags such as "she said" and the narration around them are left out.

In the screenplay format, action lines inside a dialogue block are counted as speech, because the calculator cannot always tell them apart from dialogue. Remove action lines before pasting if you want an exact spoken count.

Using the numbers in an adaptation

For a novelist adapting their own book, the calculator answers a few recurring questions.

How long will this chapter's big conversation play? Paste the conversation as it appears in the book. The calculator counts only the quoted words. If a key conversation turns out to be eight minutes long, you know before writing a page of script that it needs cutting.

How much dialogue fits a scene of a given length? Set the target. The recommendation line gives the word budget at your chosen pace and pause share. Many writers find it helpful to know that a three-minute scene holds roughly 300 to 350 words of dialogue at normal pace.

Which scenes are carrying the runtime? Time each of the main dialogue scenes and add them up. If five conversations account for forty minutes of a hundred-minute film, the rest of the story has sixty minutes, and you can plan accordingly.

Is the pace right for the genre? Run the same scene at all three paces in the comparison table. A thriller scene that only fits its slot at fast pace may need cutting rather than faster delivery, because actors cannot rush every scene.

Does the scene earn its minutes? Once you know a conversation runs four minutes, ask what changes during it. A scene that long should move the story: a decision made, a secret revealed, a relationship altered. If the characters end the scene where they started, the length is the problem, and the word budget tells you how much room you have to fix it. Compare its minutes with the scenes around it, too. Three long conversations in a row will feel slower than their total suggests, so a long scene often works best placed between shorter, more active ones.

Timing a table read properly

A table read is a reading of the script aloud, usually with a different person for each character. It is the most reliable way to time dialogue, and it does not need professional actors.

1. Give each speaking part to a different reader, and one more person the action lines.
2. Read at performance pace, not reading-aloud pace. Ask readers to pause where the characters would.
3. Time each scene separately with a stopwatch and write the times on the script.
4. Compare the times with the calculator's estimate. If your reads come in consistently longer, use the slow pace or a higher pause share for future estimates.

Read-throughs also reveal dialogue that looks fine on paper but is hard to say, which no calculator can measure.

Dialogue length beyond the film itself

Dialogue timing matters for other versions of a film too. Subtitles have limits on how fast viewers can read them, and streaming platforms publish reading-speed rules for subtitle files; the Netflix Timed Text Style Guide is one widely referenced example. Fast dialogue at 180 words a minute is harder to subtitle comfortably than the same lines at 150. Dubbed versions record every line again in another language, and translated dialogue often runs longer than the original, so scenes timed tightly in one language can be hard to dub. If you plan a release with subtitles, check the reading-speed rule of the platform you are delivering to before you lock fast-paced scenes.

What the calculator cannot know

The calculator works from averages and planning assumptions. It does not know how a director will stage the scene, whether actors will overlap their lines, how much an editor will cut in the edit, or whether the scene opens with thirty seconds of a character walking in silence. It counts words, not syllables, so a scene full of long technical words will run longer than the estimate. Its value is in getting you within reach of the right number early, and in showing how much each choice of pace, pause and turn length moves the result.

The calculation is deterministic: the same inputs always give the same output, and everything is calculated in your browser.

Sources and rules this page relies on

• Speaking rates of roughly 120 to 160 words a minute for English conversation are commonly quoted ranges, not a published standard; real rates vary by speaker, language, emotion and material. The 120, 150 and 180 planning rates on this page are illustrative midpoints chosen for that reason.
• The one-page-per-minute rule is an industry rule of thumb described in standard screenwriting references such as Christopher Riley's The Hollywood Standard (Michael Wiese Productions) and David Trottier's The Screenwriter's Bible (Silman-James Press).
• The 55-lines-per-page figure and the narrow dialogue column follow from 12-point Courier at standard screenplay margins; screenplay software gives the exact page count.
• Subtitle reading speed limits are set by each platform. The Netflix Timed Text Style Guide (Netflix Partner Help Center) is one example; check the current version for the platform and language you are delivering to.
• The half-second speaker change and the pause-share ranges are planning assumptions made for this tool, not industry figures. Replace them with your own timings once you have read the scene aloud.