Blake
English · Narration
Audiobook Length Estimator
Free to start. No card needed.
Estimate how many hours your manuscript will run once narrated, from word count alone — separate from cost, and before you generate anything.
“VocalLab AI nailed the process, and the output is better. Way better. I love the ability to steer voices and ease of adding emotions/ sighs/ coughs.”
“I can upload a Word document, select automatic casting, click a button, and out comes a fully dramatised audiobook with different voices and performances.”
Step-by-step guide
How to Use Audiobook Length Estimator
Start for free — no credit card, no software to install.
Count your manuscript's words
Most word processors and ebook readers show a total word count on the file's properties or statistics panel.Apply the rough rate
Divide the word count by roughly 9,000 to get an estimated runtime in hours as a starting point.Adjust for dialogue and pacing
Dialogue-heavy scenes tend to read a little faster than dense narration, which nudges the estimate down slightly.Account for pause blocks
Explicit silence inserted between scenes or chapters adds seconds the word-count formula alone doesn't capture.
Audiobook Length Estimator
Features & Capabilities
Everything you need to create professional voiceovers — in one tool.
Rough rate, not a promised runtime
The 9,000-words-per-hour figure is an industry rule of thumb, not a guarantee — actual runtime depends on your text's punctuation and pacing.Separate from cost
Runtime and points cost are two different sums; this page covers only the first, since committing points needs an accurate word count first.Works before you upload anything
The estimate only needs a word count, so you can size a manuscript before touching the editor or spending a point.Pause blocks are a deliberate craft choice
Explicit silence between scenes is inserted by you, not automatic, so the estimate should account for how many you plan to use.
Use cases
What Can You Create with Audiobook Length Estimator?
From TikTok to podcasts — here's where creators use this tool most.
Sizing a novel before casting characters
Know roughly how many listening hours a manuscript represents before deciding how many voices the cast needs.Comparing a novella against a full novel
See at a glance that a 40,000-word novella runs to a fraction of a 100,000-word novel's total runtime.Setting listener expectations
A rough runtime figure is useful for a book's audio-edition description before the file even exists.Planning a multi-part release
Estimate where natural break points fall in a long manuscript if you plan to release it in parts.Checking a revised draft against the original
A newly edited manuscript's updated word count gives a quick read on whether the edit shortened or lengthened the eventual audio.
vs Standard TTS
VocalLab vs Standard Text-to-Speech
See why creators switch from generic TTS tools to VocalLab.
| VocalLab AI | Standard TTS | |
|---|---|---|
| Audio quality | Studio-quality AI | No |
| MP3 export | Yes | No |
| SRT caption export | Yes | No |
| Word-level highlighting | Yes | No |
| Emotion & style control | Yes | No |
| Commercial rights | Yes | No |
| Instant generation | Yes | No |
| Free tier | No credit card needed | No |
Recommended Voices
Matched to this tool. Play a sample, then use it in Studio.
About this tool
Everything you need to know about Audiobook Length Estimator
Word count decides runtime long before you spend a single point on generation — this page estimates minutes and hours from your manuscript's length, not the cost, which is a separate sum entirely. As a rough rule, narrated audio runs close to 9,000 words per hour, so a 45,000-word novella lands near 5 hours and a 90,000-word novel near 10. Dialogue-heavy chapters often read a little faster than dense description, and any pause blocks you add for chapter breaks or dramatic beats stack real seconds on top of the word-count math — know the runtime before you commit to generating it.
People also search for
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Is 9,000 words per hour exact?
No — it's a rough industry rule of thumb; your actual runtime depends on sentence length, dialogue density and how much pause time you insert between scenes.
Does this page tell me what it will cost?
No, that's a separate sum on the cost calculator page — this one estimates runtime in hours from word count, which you then convert to points.
Why does dialogue change the estimate?
Short lines of dialogue with natural pauses already built into the punctuation tend to read a touch faster than long descriptive paragraphs.
Do pause blocks affect the runtime a lot?
A few seconds of inserted silence per chapter break adds up across a long book, so a heavily paused manuscript runs longer than the word count alone suggests.
Make the whole audiobook in Studio.
Upload your manuscript, cast the voices and export every chapter. Free to start.
