AI TikTok Caption Generator
Punchy, lower-case TikTok captions under 150 characters, with 4-6 niche hashtags on their own line. No corporate tone, no #fyp filler.
60 free generations per month. No credit card. Bring your own AI key.
Why creators use this
Caption stays under 150 characters — TikTok hides the remainder behind “...more”, which is where hooks go to die.
Hashtags come back on a separate line, 4-6 of them, chosen niche rather than the #fyp-style generics you'd be competing on against millions of videos.
Lower-case and conversational by default, because Title Case and full punctuation read as a brand account in a feed built around personal video.
How it works
Drop a YouTube URL. We grab the captions in seconds. Or paste any transcript directly.
Get your TikTok caption in a single pass — plus 19 other platform-native formats.
Edit inline, regenerate any output, hit "Make more viral" for a stronger rewrite.
FAQ
How long should a TikTok caption be?+
Under 150 characters. TikTok truncates longer captions behind a “...more” link, and on smaller phones the caption also overlaps the interface — so the hook has to land early.
Does #fyp actually do anything?+
Not meaningfully. It appears on hundreds of millions of videos, which makes it useless as a targeting signal. This returns 4-6 niche tags tied to your actual subject, which the recommendation system can genuinely use.
Why lower-case?+
It reads as native to the platform. Capitalised, fully punctuated captions signal a corporate account, and engagement on TikTok skews heavily toward content that reads as person-to-person.
Can I reuse the caption on Instagram Reels?+
Mostly, yes. Reels allows far longer captions so you have room to expand, but the sub-150-character version works on both platforms without editing.
Get your TikTok Caption Generator now
Plus 19 other platform-native formats from the same source — free.
Start freeMore AI tools
Instagram captions that open on a hook, carry a value-packed body with real line breaks, close on a CTA, and finish with 8-12 mixed-volume hashtags on a separate line.
Story-led Facebook posts in 3-5 short paragraphs, built around a relatable angle someone would actually share to their own timeline.
Shorts captions under 90 characters with 3-5 high-curiosity hashtags including #shorts — written to stop a swipe, not to describe the video.
Other formats included with every project: YouTube title, YouTube description, SEO tags, LinkedIn post, Twitter / X thread, Blog article, TikTok caption, Instagram caption, Facebook post, YouTube Shorts caption and more.