Quick answer
A script's runtime is its word count divided by your speaking pace in words per minute, so a 600-word script runs 4:00 at 150 wpm, 5:00 at 120 wpm and 3:20 at 180 wpm. Run it backwards for a word budget: an 8:00 video is 1,200 words at 150 wpm. The page also shows a 10-15% buffer for pauses and cutaways.
How this calculator works
Speaking pace turns a script into time through one relationship: words divided by words-per-minute gives minutes. Run it backwards — minutes multiplied by words-per-minute — and a target runtime turns into a word budget. That's the whole engine behind both directions of this tool.
Duration → Words: word count = minutes × wpm
Range: fastest = words ÷ pace-high, slowest = words ÷ pace-low
Word count is counted the same way whether you paste a full script or type a number directly: runs of spaces, tabs and line breaks all collapse to a single gap, so double-spaced scripts, indented dialogue and copy-pasted formatting don't inflate the count. The range shown alongside the headline number isn't padding — it comes from the low and high end of whichever pace preset you picked, so a "conversational" estimate always shows what the same script looks like read a little slower and a little faster.
Where these speaking-pace numbers come from
Every pace credited to a page below is printed on that page, and a preset's range is this calculator's own unless the text says a page prints it. VirtualSpeech (20 August 2026) credits the National Center for Voice and Speech with about 150 wpm as the average conversation rate for English speakers in the United States, and its own list of average speech rates gives 120-150 wpm for conversation, 150-160 for audiobooks and 150-160 for radio hosts and podcasters. Teleprompter.com (published 8 August 2025) says most people speak at around 125 to 150 wpm in a natural, conversational tone.
Prepublish (published 5 March 2026, updated 8 September 2026) gives paces by style in a table: educational and tutorial 130-150 wpm, conversational vlog 140-160, commentary and essay 150-170, tech reviews 150-170 and gaming and reactions 160-180. It calls the per-style figures planning conventions rather than measurements, calls 140 to 150 wpm a planning default, not a measurement, and calls 150 wpm with a 15 percent buffer its older planning convention. Teleprompter.works (12 June 2026) gives 130-150 wpm for YouTube talking-head and educational videos, 110-130 for online course modules and 140-160 for podcast monologues, and says most content creators deliver scripted video at 120-160 wpm.
That is where the presets come from. Slow (110-130 wpm) is the range Teleprompter.com gives for technical or complex topics and Teleprompter.works for online course modules. Conversational (140-160) is Prepublish's conversational vlog row and Teleprompter.works' podcast monologue range; its 150 wpm default is the figure VirtualSpeech credits to the National Center for Voice and Speech and the pace in Prepublish's older planning convention, and neither measures your voice. Audiobook (150-160) is the range VirtualSpeech lists for audiobooks, which Prepublish also gives for professional audiobook narrators as a commonly cited planning figure it did not measure. The other three are this calculator's own ranges and no cited page prints them: fast / energetic (170-190), YouTube explainer (135-160) and ad read (150-175). For ads, Teleprompter.com says a 30-second commercial is usually about 75 words and a 60-second spot about 150, which is 150 wpm.
Speaking pace and words per minute of finished video
Prepublish also measured finished videos, dividing the words in their captions by the full runtime. In 3,923 English YouTube videos it stored, the median 10-minute video held about 1,810 words, with the middle half between 1,570 and 2,060. In its 349-video hook study the middle half spoke between 160 and 201 wpm of finished video, with a median of 181, and it says these are finished videos, not narration pace. Because the captions are divided by the full runtime, pauses and B-roll are already inside the figures, so a pace taken from them needs no buffer on top, while a speaking-only pace does. At the 181 wpm median Prepublish measured, this page times 1,810 words at 10:00; at its own 150 wpm default it times them at 12:04, or 13:16 to 13:53 with the buffer.
Increditors (published 20 June 2026), a video editing agency, says natural conversation runs roughly 130-150 wpm with natural pauses, and that high-retention YouTube delivery typically lands between 160 and 190 wpm of perceived pace, reached through a combination of actual speech rate and selective silence removal in the edit.
Worked example 1 — one script, three paces
Take a 600-word script and read it at each of the three general presets:
- Slow (120 wpm): 600 ÷ 120 = 5:00
- Conversational (150 wpm): 600 ÷ 150 = 4:00
- Fast / energetic (180 wpm): 600 ÷ 180 = 3:20
The same 600 words swing by a full 100 seconds — 50% longer at the slow end than the fast end — purely from delivery. That's why "how many words for a 5-minute video" doesn't have one answer: it depends entirely on who's reading it and how.
Worked example 2 — a fixed target, reversed
Now flip it: you've been told the video must land at 8:00 exactly, and you need to know how much to write.
- Slow (120 wpm): 8 × 120 = 960 words
- Conversational (150 wpm): 8 × 150 = 1,200 words
- Fast / energetic (180 wpm): 8 × 180 = 1,440 words
A 480-word gap between the slow and fast budgets for the identical runtime — which is exactly the reverse-mode calculation above, useful before you've written a word rather than after.
Pacing tips
- Budget extra time for what isn't speech. Teleprompter.com says to allow an extra 10-15% for pauses and non-speaking moments, Teleprompter.works says scripts for YouTube talking-head and educational videos typically run 10-15% longer than their word-count estimate, and Prepublish says non-speaking content adds up to 10-20% of a finished video's runtime. The buffer line on this page uses 10-15%.
- Match pace to the material. VirtualSpeech says to speak slower than usual when you present complex content, so the audience has time to take it in, and Teleprompter.com says a slower pace often works better when you explain a process.
- Time a real take. VirtualSpeech's method is to record yourself for a few minutes, count the words and divide by the minutes; Prepublish's is to read 500 of your own words at your normal on-camera pace and divide 500 by the minutes. Teleprompter.works says the same script recorded on different days can vary by 10-20% in duration. Type your own number into the words per minute field.
- A short slot is plain arithmetic. A 30-second slot at 150 wpm holds 75 words (0.5 minutes × 150), and at the 180 wpm fast preset, 90 words.
The figures on this page are the ones the cited pages print, each credited above; none measures your own voice. Time yourself once at your actual pace and use that number for anything that has to hit an exact runtime.
FAQ
How many words per minute is normal for talking?
VirtualSpeech (20 August 2026) credits the National Center for Voice and Speech with about 150 wpm as the average conversation rate for English speakers in the United States, and its own list gives 120-150 wpm for conversation. Teleprompter.com says most people speak at around 125 to 150 wpm in a natural, conversational tone. For finished YouTube videos, Prepublish measured the middle half at 160 to 201 words per minute of finished video, which it says is not narration pace.
What speaking pace should I use for a YouTube video?
Prepublish's table gives 130-150 wpm for educational and tutorial videos, 140-160 for conversational vlogs, 150-170 for commentary and essays and for tech reviews, and 160-180 for gaming and reactions, and it calls these planning conventions rather than measurements. Teleprompter.works gives 130-150 for YouTube talking-head and educational videos. Increditors puts high-retention YouTube delivery at 160-190 wpm of perceived pace, reached through a mix of actual speech rate and selective silence removal.
Why does my video always run longer than my script predicts?
A raw words-divided-by-pace calculation counts only the words you say, not the seconds you spend not talking. Teleprompter.com says to allow an extra 10-15% for pauses and non-speaking moments, Teleprompter.works says scripts for YouTube talking-head and educational videos typically run 10-15% longer than their word-count estimate, and Prepublish says non-speaking content adds up to 10-20% of a finished video's runtime.
Is there a standard audiobook narration speed?
VirtualSpeech lists 150-160 wpm for audiobooks, which it describes as the upper range that people comfortably hear and vocalize words. Prepublish gives around 150-160 for professional audiobook narrators, a commonly cited planning figure that it did not measure. This calculator's audiobook preset uses 150-160.
How fast do ads get read?
Teleprompter.com says a 30-second commercial is usually about 75 words and a 60-second spot about 150, which is 150 wpm (75 words in half a minute), and that you will likely speak a bit faster than normal in a 15 to 30 second ad. It gives no wpm range for ads: this calculator's ad read preset of 150-175 wpm is its own.
Does a faster pace hurt viewer comprehension?
VirtualSpeech says a slower rate is generally easier for an audience to understand, and that clarity matters as much as pace: it points to a TED talk delivered at over 200 wpm that you can probably still follow because the speaker articulates clearly and uses simple language. It gives no pace at which comprehension peaks or falls, and neither does this page.
How many words per minute should an explainer video use?
Prepublish's table gives 130-150 wpm for educational and tutorial videos and uses 135 wpm as its example of a finance explainer, and Teleprompter.works gives 130-150 for YouTube talking-head and educational videos. This calculator's YouTube explainer preset, 135-160 wpm, is its own range. Pick the pace that matches the delivery you plan, or time a take, and the timer turns your word count into a runtime.