ZaPrompt ONAIRFrom rehearsal to recording
Ready for the camera?
ZaPrompt OnAir’s mobile app puts your script near the camera and lets you record a clean take. Explore the app and its subscription terms before choosing a plan.
Explore mobile recordingFree creator tool · No sign-up
Fit your script.
Find your pace.
A free script timer for videos, lessons, and presentations. See how long your words will take, make room for pauses, then rehearse out loud.
Your script is processed in this page. It is not uploaded or saved by this tool. Copy it elsewhere before closing or refreshing.
Ready. Start when you are comfortable. Scroll manually whenever you need to.
Adjust while reading without restarting. This changes scrolling only; the elapsed timer still measures real time.
At 1×, auto-scroll follows your estimated duration; it does not listen to your voice. Use Pause to stop both scrolling and the rehearsal timer. Keep this tab visible while rehearsing.
How to time your script
- Paste the words you will actually say. Remove stage directions, headings, and notes you will not read aloud. This tool counts whitespace-separated words, including numbers.
- Choose a starting pace. Try 150 words per minute, then adjust to your own delivery. Technical explanations and unfamiliar names often need more time than a familiar introduction.
- Budget for silence. Add time for an opening beat, a demonstration, a slide change, or the final call to action. Extra pause time is added to the estimate.
- Rehearse and revise. Read once out loud. If you run long, remove a repeated point before trying to race through the words.
The formula is words ÷ words per minute × 60 + extra pause seconds. Real delivery varies with emphasis, pronunciation, and the amount of explanation you add.
How many words fit in a video?
These are planning estimates before extra pauses. Use your own pace in the calculator above for a better fit.
| Video length | 120 wpm | 150 wpm | 180 wpm |
|---|---|---|---|
| 30 seconds | 60 | 75 | 90 |
| 60 seconds | 120 | 150 | 180 |
| 2 minutes | 240 | 300 | 360 |
| 5 minutes | 600 | 750 | 900 |
For example, a 60-second video at 150 wpm with 10 seconds reserved for pauses leaves room for about 125 spoken words.
Build your delivery
Sound like yourself.
Write shorter phrases, keep the reading area near the lens, and leave space to breathe. Our guides walk through a practical setup.
Browse recording guides →Questions before you start
Is the script timer free?
Yes. This browser timer and rehearsal view are free and require no account. The downloadable ZaPrompt apps are separate products with their own trial and subscription terms.
Does this record video or follow my voice?
No. It estimates duration and scrolls your text at a steady pace during rehearsal. It does not use your camera or microphone.
Why was my actual take longer?
The estimate assumes a steady average pace. Breathing, emphasis, demonstrations, and difficult words can extend a take. Increase the pause allowance or lower the pace based on a real rehearsal.
Will my script still be here tomorrow?
No persistence is provided. Keep a copy in your own document or in the app. Refreshing or closing this page can remove your text.