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Free YouTube caption generator
A caption has one job: get the first line read, then earn the next action, whether that is a save, a comment or a click. The generator writes three different captions for your post, each shaped to the platform's length limits and habits, with relevant hashtags.
Generate YouTube captions
Free: 2 runs a day without an account, 10 a month with a free account.
Your result will appear here.
YouTube at a glance
| Caption / post length | Up to 5,000 characters |
|---|---|
| Hashtags | 3 to 5 hashtags (the first 3 show above the title; over 60 are all ignored) |
| Formats | Shorts (up to 3 minutes) and long-form video |
| Image size | 1080 × 1920 (9:16) for Shorts, 1920 × 1080 (16:9) for long-form |
| Good times to start with | Consumer: Thursday to Sunday, 2–4 PM, so it is indexed before evening viewing Business: weekdays 12–3 PM Local business: Thursday to Saturday, 3–6 PM |
| Strongest days | Thursday to Sunday |
Titles are limited to 100 characters, and search reads the title and description first. Platform limits change from time to time, so check the app if a number matters.
YouTube captions by niche
Questions
How many hashtags should I use on YouTube?
Use 3 to 5 hashtags (the first 3 show above the title; over 60 are all ignored). Tags work best when they describe the post, not when they are added for reach alone.
What is the YouTube character limit?
Captions or posts on YouTube allow up to 5,000 characters. Titles are limited to 100 characters, and search reads the title and description first.
When is the best time to post on YouTube?
Good starting points: Thursday to Sunday, 2–4 PM, so it is indexed before evening viewing for consumer audiences, weekdays 12–3 PM for business audiences. Strongest days are usually Thursday to Sunday. Test these, then keep what wins in your own analytics.
Is the YouTube caption generator free?
Yes. You can run it 2 times a day without an account, or 10 times a month with a free account. For more, credit packs start at $6 for 30 runs, and Pro is $29 a month for 1,500 runs.