TikTok Caption Generator
Type what your video is about — get 6 AI-written TikTok captions in different angles (hook, curiosity, value, story, humor, CTA), each under 150 characters. Ready to paste.
How to write a TikTok caption that gets watch-time (not just likes)
TikTok captions do two jobs at once: they hook the scroll (the first 60–100 characters are what viewers actually see) and they signal the FYP algorithm what your video is about. The 2026 sweet spot is 80–150 characters — long enough to add curiosity, short enough that TikTok doesn't clip it behind 'more'. The 6 captions this generator produces cover every angle proven to boost completion rate: a curiosity gap ("you won't believe what happened at 0:23"), a value promise ("3 steps to fix your posture in 10 seconds"), a story lead ("POV: your dropshipping store just hit $10k"), humor, a hard hook, and a direct CTA. Pick the one that matches your video's energy — and pair it with the hashtag output for max reach.
TikTok caption generator FAQ
What's the ideal TikTok caption length?+
80–150 characters. TikTok now supports 4,000-char captions, but only the first ~100 chars show before 'more'. Keep hook + keywords in the first 100 for max scroll-through, and stay under 150 total for above-the-fold visibility.
Do TikTok captions affect the FYP algorithm?+
Yes. TikTok reads captions and hashtags as topic signals — the algorithm classifies your video by the words in the caption. A keyword-rich caption ('easy pasta recipe' vs. just 'yum 🍝') can double your FYP reach on the same video.
Should I use emojis in TikTok captions?+
One or two — yes. Emojis boost eye-tracking on the scroll and increase completion rate by ~15%. But 5+ emojis look spammy and hurt reach. Toggle 'emojis on' here for the sweet spot.
How many hashtags should I put in the caption?+
3–5 hashtags total. The AI in this generator includes 3 tuned hashtags per caption when you toggle hashtags on — one broad, one niche, one video-specific.
Is this generator really free?+
5 free generations per day per IP. Sign up for Postlabs to unlock unlimited generations plus full TikTok automation.
Does TikTok penalize AI captions?+
No. TikTok doesn't detect or penalize AI-written captions — millions of top creators use them. What matters is that the caption is relevant to the video and drives watch-time.
Rate this tool — Tap the stars — takes 1 second.
Captions win the scroll. Postlabs wins the account.
Postlabs turns one idea into full TikToks, Reels, Shorts & YouTube videos — captions, hashtags, publishing. Automated 7 days a week.
Start free with Postlabs