Estimate TikTok, Reels, and Shorts duration
— from any script.
Paste a script, see the spoken duration at multiple speaking speeds, and find the platform-perfect length.
No signup, no upload.
Calculator
FREEScript
0 wordsNote: this calculator counts speech words only. Pauses and cutaways add ~10–20% to real runtime.
Speaking speed
Estimated duration
—
at 170 WPM
Platform fit
Platform sweet-spot analysis
Green zone = peak engagement range for that platform.
TikTok
Instagram Reels
YouTube Shorts
Your script never leaves your device.
How Script to Duration works
Paste or write your script
Live word count and reading-speed math runs as you type.
See per-platform fit
Get instant green/yellow indicators for TikTok, Reels, and Shorts duration sweet spots.
Generate the video in Lumigen
One click sends your script straight into a new Lumigen project.
Everything you need to create
stunning videos.
From avatars and voiceovers to captions and exports — all in one place.
Tech Enthusiast
EN · JP
Outdoor Adventurer
EN · DE
Industry Consultant
ES · FR
Senior Executive
EN · ZH
AI Avatars
Choose from 50+ realistic AI avatars. Each speaks naturally with perfect lip-sync, available in 30+ languages.
Get started One tool. Every feature.
Zero learning curve.
Tell us a bit more (Optional)
Create a 60-second TikTok video about the most surprising facts about the Roman Empire, ending with a call to follow
AI Script Generator
Write or generate your video script automatically. Pick a style and let the AI do the rest — or edit it yourself.
Charlotte
Swedish, Female
Lily
British, Female
James
American, Male
50+ Unique Voices
Pick from male and female voices across 30+ languages. Preview any voice before generating.
Realistic AI Avatars
Choose from 50+ hyper-realistic avatars with perfect lip-sync. No green screen needed.
Select a style or pick a template
Video Styles & Templates
TikTok shorts, YouTube docs, product demos — all with dedicated templates optimized for each platform and format.
Anime
Neon
Pixar
Ghibli
Watercolor26+ AI Visual Styles
From cinematic realism to anime, neon, Ghibli, and pixel art — pick a style and every scene is generated to match it.
1920 × 1080
High-Quality — Forever Yours
Export crisp 1080p or 4K videos. Download once and keep forever — even if you cancel.
Works with every platform you use
Export optimized for every platform
Every video format, powered by AI.
From product demos to viral social ads — generate studio-quality videos for any use case in minutes, no editing skills required.
Product Demos
Turn features into 60-second videos that sell
TikTok Shorts
Viral-ready vertical videos that stop the scroll
YouTube Shorts
Short-form content that grows your channel fast
Social Ads
High-converting creatives for every platform
See what you can create.
TikTok stories, YouTube docs, product demos — all generated in under 5 minutes.
Rainy Night in Tokyo
AI Avatar Product Demo
Why Bitcoin Is Digital Gold
Rich Mindset Breakdown
Multi-Scene Showcase
Sync & Dance Duo
More free tools
Stop estimating duration.Generate the actual video.
Lumigen turns your script into a TikTok, Short, or Reel — with avatars, voiceover, B-roll, and styled captions — at the exact platform sweet spot. In under 5 minutes. No editing skills needed.
Cancel anytime · Free trial included