Paste your script and instantly see how long it will run at different speaking paces — and whether it fits TikTok, Instagram Reels, YouTube Shorts, or Facebook.
Most creators write their scripts without checking duration — then discover in the edit that their content is 20 seconds too long for their target platform slot. On TikTok and Instagram Reels, ad formats are optimised around 15s, 30s, and 60s cut-offs. A script that runs 35 seconds forces you into the 60-second slot, increasing CPM and reducing average completion rate.
The ideal paid ad script fits comfortably under 30 seconds: a 3-second hook, 20 seconds of benefit demonstration, and a 7-second CTA. That's roughly 60–70 words at a normal speaking pace. Use this tool to check your word count before you film or generate.
Once your script length is right, Sphynxify can turn it into a full AI UGC video — avatar, voiceover, captions, and product visuals — in minutes.
Divide your word count by your speaking pace in words per minute. Average conversational speech is 130 wpm — so a 65-word script takes approximately 30 seconds. Paste your script into this calculator to get an instant estimate at slow, normal, and fast paces.
TikTok recommends 15–30 second videos for paid ads. Videos under 30 seconds typically see higher completion rates and lower CPM. TikTok supports videos up to 3 minutes, but organic reach drops significantly for content over 60 seconds.
At a normal conversational pace of 130 words per minute, a 30-second script is approximately 65 words. At a faster energetic pace (160 wpm), you can fit around 80 words in 30 seconds.
At 130 words per minute (normal pace), a 60-second script is around 130 words. At 100 wpm (slow/educational pace), 60 seconds fits approximately 100 words. At 160 wpm (fast/energetic), up to 160 words.
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