Reading Speed vs Speaking Speed: Why Your Eyes Beat Your Voice
Written by Reading Coach
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You can read this sentence faster than you can say it. That is not a quirk of your voice — it is a fixed gap between two different machines, and it decides how long every script, speech and audiobook in your life actually runs.
Same passage · 1,000 words
Who finishes first?
Your eyes, reading to yourself
The same words, out loud
Slowed down for a room
Reading speed vs speaking speed, side by side
Eyes
238wpm
Adults reading non-fiction silently, averaged across 190 studies.
Voice
183wpm
The same adults, reading the same kind of text out loud.
Both figures come from the same 2019 meta-analysis by Marc Brysbaert, which pooled 190 studies covering more than 18,000 participants. Putting them side by side is the whole point: these are not two unrelated statistics, they are one person doing one task in two modes, and the mode costs them 55 words a minute.
That is a 30% penalty just for opening your mouth. Slow down further for an audience, and the penalty nearly doubles.
Why your reading speed outruns your speaking speed
Three separate limits stack up, and none of them are about how clever you are.
Articulation
Your mouth has moving parts
Every spoken word needs breath, tongue placement and jaw movement. Reading needs none of that. The ceiling on speaking speed is mechanical, and it sits far below the ceiling on visual word recognition.
Listening
A listener cannot re-read a sentence
A reader who misses a clause simply glances back. A listener has one pass and no scrollbar, so speakers instinctively slow down and repeat to keep everyone on the same line.
Silence
Pauses count as time, not as words
Delivery includes breaths, beats before a punchline and gaps for laughter. None of them are words, but all of them eat the clock, which is why finished talks run longer than any word count predicts.
The practical consequence is that speaking speed is close to fixed. You can train silent reading — that is what dropping subvocalisation and reading in chunks are for. You cannot meaningfully train your jaw. So when the two numbers disagree, the voice always wins the argument about timing.
The pace ladder: same words, five speeds
"Speaking speed" is not one number either. It shifts with the room, and knowing which rung you are on matters more than knowing the average.
Only the top bar is your eyes. Every bar below it is your voice in a different situation.
Where the gap actually costs you
Most people never notice the difference until it bites — usually the night before a talk, when a script that felt short on screen refuses to fit in the slot.
If you are writing to be spoken
Never time a script by reading it
Reading your own draft silently tells you nothing about the runtime. A 1,500-word video script reads in six minutes and delivers in eleven. Convert the word count against a speaking pace instead.
Words to minutes →Script to speaking time →How long is a 5 minute speech? →10 minute presentation budget →
If you are choosing read or listen
Reading wins on raw throughput
An audiobook at normal speed delivers around 155 words a minute; your eyes do 238. That is why a book you would finish in eight hours of reading runs twelve hours as audio — and why playback speed is so tempting.
There is a third cost that is easy to miss. Because your eyes outrun your voice, the habit of silently mouthing words while you read drags your reading speed down toward your speaking speed — it is the single most common reason people stall near 180 wpm. If your reading speed sits close to the average and will not move, this gap is usually where the ceiling is coming from.
Your own reading and speaking speed
Averages are useful for writing articles and useless for planning your Thursday. The two numbers that matter are yours.
Once both are measured, the arithmetic is simple and it never changes: divide a word count by your reading speed to know how long it takes to read, and by your speaking speed to know how long it takes to say. Mixing them up is how talks overrun.
Reading speed vs speaking speed: FAQ
Is reading speed faster than speaking speed?
Yes, for almost everyone. Silent reading averages about 238 words per minute for adult non-fiction, while reading the same text aloud averages about 183. The gap widens further when you slow down deliberately for an audience, where 130 words per minute is a normal delivery pace.
Why can I read faster than I can talk?
Reading is limited by how fast your eyes and brain can recognise words. Speaking is limited by your jaw, tongue, lungs and the pauses a listener needs. Physical articulation is simply slower than visual recognition, and it cannot be trained away the way reading speed can.
How many words per minute should I speak in a presentation?
Around 130 to 150 words per minute. Below 120 a room starts to drift; above 160 listeners stop absorbing detail. That range is why a five-minute talk lands at roughly 650 to 750 words rather than the 1,190 words you could read silently in the same five minutes.
Does a faster reading speed make me a faster speaker?
No. The two are largely independent. Raising your silent reading speed does not raise your articulation rate, which is why a script must always be timed against your speaking pace, never your reading pace.
Should I listen to audiobooks at 2x speed?
Doubling a 150 wpm narration gives you roughly 300 words per minute, which is above the average silent reading speed but still within the range many people comprehend. Comprehension holds for familiar, narrative material and drops sharply for dense or technical content.
References
- Brysbaert, M. (2019). How many words do we read per minute? A review and meta-analysis of reading rate. Journal of Memory and Language, 109, 104047.
- National Center for Voice and Speech. Voice qualities and speaking rate for English speakers in the United States.
- Rayner, K., Schotter, E. R., Masson, M. E. J., Potter, M. C., & Treiman, R. (2016). So much to read, so little time: How do we read, and can speed reading help? Psychological Science in the Public Interest, 17(1), 4-34.