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Calculate audiobook listening time, production costs, and duration estimates from word count, pages, or recording hours.
Calculate audiobook listening time, production costs, and duration estimates from word count, pages, or recording hours.
Enter values above and click Calculate — results will appear here with the formula explained.
Audiobook listening time is original duration divided by playback speed. Time saved is the difference. For estimates from text, audio duration is word count divided by narration speed (150-160 wpm is standard for audiobooks, faster than 130 wpm conversational but slower than 180 wpm podcast). Page count uses ~300 words per page as average.
Production cost is finished hours times cost per finished hour (PFH). PFH $250-500 covers narration, editing, proofing and mastering for indie production. Recording is typically 2-3× finished length, editing 3-4×, so a 10-hour book needs 25 hours recording and 30 hours editing. Royalty-share deals (no upfront, split royalties) trade cash risk for long-run earnings — sensible for unproven titles, expensive for bestsellers.
Narration speed varies by genre in ways worth modeling: literary fiction with dialogue and pacing often lands near 140–150 wpm, straightforward non-fiction near 155–165 wpm, and dense technical material slower still. Character voices, accents and dramatized multi-cast productions add 5–15% runtime over a straight read. When estimating from a manuscript, use the genre-appropriate rate and add contingency rather than a single point figure.
Playback speed and comprehension trade off on a curve most listeners discover by experiment: 1.0–1.25× is transparent for nearly everyone, 1.5× saves a third of the time with minor effort, 1.75–2.0× works for familiar or light material, and beyond 2× retention drops for dense content. Commute math makes it concrete: a 10-hour book at 1.5× fits a week of 80-minute round-trip commutes with room to spare.
Distribution economics frame every production decision. Audible's exclusive versus non-exclusive royalty rates (historically ~40% vs ~25% of sale price through major channels), plus library and à-la-carte sales, decide payback periods. A $4,000 production earning ~$7 per exclusive sale needs roughly 570 sales to break even — achievable for established authors, daunting for debuts, which is why many start with royalty-share or AI-assisted drafts with human proofing.
Quality control separates books that earn reviews from books that earn returns: noise floor below about −60 dB RMS, consistent loudness near Audible's ACX requirements, no mouth clicks or room echo, correct chapter headers and retail sample. Budget proof-listening (a full human pass) into every PFH quote comparison — the cheapest bid without it is rarely the cheapest finished book.
Calculate audiobook listening time, production costs, and duration estimates from word count, pages, or recording hours. Formula: New duration = original / speed. Example: A 10-hour audiobook at 1.5× speed takes 6 hours 40 minutes, saving 3 hours 20 minutes.
Audiobook listening time is original duration divided by playback speed. Time saved is the difference. For estimates from text, audio duration is word count divided by narration speed (150-160 wpm is standard for audiobooks, faster than 130 wpm conversational but slower than 180 wpm podcast). Page count uses ~300 words per page as average.
Production cost is finished hours times cost per finished hour (PFH). PFH $250-500 covers narration, editing, proofing and mastering for indie production. Recording is typically 2-3× finished length, editing 3-4×, so a 10-hour book needs 25 hours recording and 30 hours editing. Royalty-share deals (no upfront, split royalties) trade cash risk for long-run earnings — sensible for unproven titles, expensive for bestsellers.
Narration speed varies by genre in ways worth modeling: literary fiction with dialogue and pacing often lands near 140–150 wpm, straightforward non-fiction near 155–165 wpm, and dense technical material slower still. Character voices, accents and dramatized multi-cast productions add 5–15% runtime over a straight read. When estimating from a manuscript, use the genre-appropriate rate and add contingency rather than a single point figure.
Playback speed and comprehension trade off on a curve most listeners discover by experiment: 1.0–1.25× is transparent for nearly everyone, 1.5× saves a third of the time with minor effort, 1.75–2.0× works for familiar or light material, and beyond 2× retention drops for dense content. Commute math makes it concrete: a 10-hour book at 1.5× fits a week of 80-minute round-trip commutes with room to spare.
Distribution economics frame every production decision. Audible's exclusive versus non-exclusive royalty rates (historically ~40% vs ~25% of sale price through major channels), plus library and à-la-carte sales, decide payback periods. A $4,000 production earning ~$7 per exclusive sale needs roughly 570 sales to break even — achievable for established authors, daunting for debuts, which is why many start with royalty-share or AI-assisted drafts with human proofing.
Quality control separates books that earn reviews from books that earn returns: noise floor below about −60 dB RMS, consistent loudness near Audible's ACX requirements, no mouth clicks or room echo, correct chapter headers and retail sample. Budget proof-listening (a full human pass) into every PFH quote comparison — the cheapest bid without it is rarely the cheapest finished book.
A 10-hour audiobook at 1.5× speed takes 6 hours 40 minutes, saving 3 hours 20 minutes. A 90,000-word novel at 155 wpm is about 9.68 hours (9:41) of audio. At $400 per finished hour, that 10-hour book costs $4,000 to produce — needing roughly 570 sales at ~$7 royalty to break even, the number every production decision should be weighed against.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
Last reviewed: September 2026 · Report an error