AltF Creator
TikTok caption length and hashtag guide
TikTok captions can be up to 4,000 characters, and hashtags and mentions count toward that total. Only the first line or two show over the video, so the hook goes first. A TikTok bio is limited to 80 characters and a username to 24.
- Free, no sign-up
- Runs in your browser
- Limits sourced from each platform
- No fake scores or view predictions
TikTok text limits
- Caption: 4,000 characters, hashtags and mentions included.
- Bio: 80 characters.
- Username: 24 characters (letters, numbers, underscores and periods).
- Comment: 150 characters.
Writing for search on TikTok
Many people use TikTok as a search engine. Put the words someone would type - "easy paneer recipe", "budget Goa trip" - in the caption and say them out loud in the video, so the auto-captions carry them too.
Caption and post length checker
Paste a caption, title or bio once and see how it fits every platform at the same time. Emoji count as one character, the way people see them.
- Characters
- 0
- Words
- 0
- Hashtags
- 0
Type or paste text to check it against each platform.
| Platform | Field | Used / max | Remaining | Status |
|---|---|---|---|---|
| YouTube | Video title | 0 / 100 | 100 | Fits |
| YouTube | Description | 0 / 5,000 | 5,000 | Fits |
| YouTube | Tags (all combined) | 0 / 500 | 500 | Fits |
| Post or Reel caption | 0 / 2,200 | 2,200 | Fits | |
| Bio | 0 / 150 | 150 | Fits | |
| TikTok | Video caption | 0 / 4,000 | 4,000 | Fits |
| TikTok | Bio | 0 / 80 | 80 | Fits |
| X | Post (standard account) | 0 / 280 | 280 | Fits |
| Threads | Post | 0 / 500 | 500 | Fits |
| Post | 0 / 3,000 | 3,000 | Fits | |
| Pin title | 0 / 100 | 100 | Fits | |
| Pin description | 0 / 500 | 500 | Fits | |
| Post | 0 / 63,206 | 63,206 | Fits |
“Close to limit” means 90% or more of the cap. Limits checked November 2026; platforms change them without notice. Sources: YouTube Help Center(opens in a new tab), Instagram Help Center(opens in a new tab), TikTok Support(opens in a new tab), X Help Center(opens in a new tab), Threads Help(opens in a new tab), LinkedIn Help(opens in a new tab), Pinterest Help(opens in a new tab), Facebook Help Center(opens in a new tab).
Runs in your browser — nothing is uploaded.
Character limits by platform
| Platform | Field | Limit | Shown before "more" | Source |
|---|---|---|---|---|
| TikTok | Video caption | 4,000 | about 100 | TikTok Support(opens in a new tab) |
| TikTok | Bio | 80 | - | TikTok Support(opens in a new tab) |
Limits checked November 2026. "Shown before more" is approximate and changes with screen size. X's 280 characters is for standard accounts; Premium allows longer posts.
TikTok caption length and hashtag guide: questions and answers
Do hashtags count toward TikTok's caption limit?
Yes. Everything in the caption box counts, including hashtags, mentions and emoji.
Is a long TikTok caption better?
Only if the extra text is useful. The first line is what most viewers read; a longer caption helps search when it describes the video in plain words.
Creator tools and guides
69 free creator tools on AltFTool
Focused tools for one job each, grouped by the part of the work they help with. Each tool says whether it runs in your browser or uses a server.
Video editing and files
Captions, subtitles and transcripts
Titles, thumbnails and descriptions
Get your channel found
Links from real, relevant sites help a channel, podcast or portfolio show up in search. These AltFTool lists are checked by hand; pick the ones that fit your niche and skip any that ask you to pay for links.
Everything you type into AltF Creator stays in your browser. Your upload plan is saved on this device only, and nothing is sent to AltFTool or any platform.