Give your script room to breathe.
Paste your script to estimate its spoken length. Leave space for pauses, visual demonstrations, and the final call to action. This is a planning estimate; a recorded read is the final timing check.
At this speed: 37 words in 15 seconds, 75 in 30, and 150 in 60.
How much should a 30-second script say?
At 150 words per minute, uninterrupted speech fills 30 seconds with about 75 words. A product demo needs some of those seconds for the action on screen. Try drafting 55–65 words, read them out loud, then remove any line that repeats what the viewer can already see.
A useful structure is one specific opening, one piece of evidence, and one next step. For example: “Your morning does not need another checklist. Put one notebook where you make coffee. Write the one thing that would make today feel complete. Start there.” The demonstration supplies the detail the voiceover leaves out.
Read it at the pace you want viewers to feel.
Faster narration can fit more information, but comprehension also depends on language, pronunciation, pauses, and the images competing for attention. Count names and numbers as spoken phrases. “2026” is one token in this counter, but several spoken syllables.
Record a rough read, listen without watching, and add the actual recording length to your scene plan. Use the slower estimate if you are deciding whether an idea needs two videos.
Build a storyboard →Rehearse with a teleprompter · Finish your captions · Plan the full workflow