TikTok Character Limits 2026: Bio (80), Caption (4,000), Hashtags
TikTok's caption limit jumped from 2,200 to 4,000 characters in 2023 and stayed there in 2026. The bio is still tight at 80 characters — the smallest profile bio on any major platform. Here are all of TikTok's character caps in one place.
Quick Answer: Every TikTok Character Limit (2026)
| Field | Limit | Notes |
| :--- | :--- | :--- |
| Bio | 80 chars | Tightest bio of any major platform |
| Username | 24 chars | Letters, numbers, underscores, periods |
| Display Name | 30 chars | Can change every 7 days |
| Caption | 4,000 chars | Up from 2,200 in 2023 |
| Comment | 150 chars | Surprisingly short |
| Hashtag (per tag) | 100 chars | Per individual hashtag |
| DM (single message) | 1,000 chars | Per message |
| Bio link description | 80 chars | If using bio-link feature |
| Video Title (separate from caption) | 100 chars | Newer field on long-form |
The 80-Character Bio Is the Reason Most TikTok Profiles Look Bare
You get 80 characters. That's about 12-15 words. It forces brutal compression.
Patterns that work in 80 chars:
Identity + tag + hook — "Cooking. ✨ 600+ recipes ✨ Tap below for the salt-trick"
Promise + proof — "I show you AI tools that actually save time. 200K+ tested."
Vibe + specificity — "Brooklyn, midnight, vintage cameras. New roll every Friday."
— TikTok bios support 4 lines, and a stacked bio reads better than a runon. Each line should pull its weight.
Try the tool mentioned above?
Open the related KuchhBhi tool and put the guide into practice.
Use one emoji per line maximum. More feels desperate, costs precious characters, and doesn't increase clicks.
The Caption Jump: Why 4,000 Now Matters
In 2023, TikTok raised the caption limit from 2,200 to 4,000 characters. Most creators ignored this and kept writing 100-character captions. They're missing free distribution.
Long captions on TikTok (1,500+ characters) signal to the algorithm that the post is content-rich and surface in search results. TikTok in 2026 is half discovery, half search — and search loves text. The hook still has to be in the first 100 characters (what's visible above the "…more" tap), but the remaining 3,900 are SEO real estate.
TikTok doesn't cap how many hashtags per post — but each individual hashtag can be at most 100 characters. In practice, 5-8 highly relevant hashtags outperform spammy 20-tag stacks. The algorithm in 2026 is good at inferring topic from caption + audio + visual, so hashtags are a tie-breaker, not the main signal.
Comments at 150: Short and Sweet
TikTok comments are capped at 150 characters — surprisingly short, especially compared to Instagram's 2,200. This is intentional: TikTok wants comments to be reactions, not essays. Don't waste characters on @mentions; they don't count as separate items but eat your space.
Don't Trust the App's Counter Alone
TikTok's compose box has a counter, but it's not always accurate for emojis (which can cost 1, 2, or 4 characters depending on encoding). Our Character Counter has dedicated progress bars for TikTok bio (80), caption (4,000), and the rest of the platforms in one screen — and emoji-aware counting.
Frequently Asked Questions
Did TikTok increase the caption limit from 2,200 to 4,000?
Yes — TikTok raised the caption limit to 4,000 characters in late 2023. The change has stuck through 2026.
Why is the TikTok bio so short at 80 characters?
TikTok's design philosophy treats the profile as a content gallery, not a resume. The 80-character bio is meant to be a tagline, not a description.
What's the TikTok username character limit?
24 characters max — alphanumeric, underscores and periods. You can change it once every 30 days.
Can I write a 4,000-character TikTok caption and have it actually surface?
Yes — long captions are increasingly favoured by TikTok's search algorithm in 2026. Just make sure the first 100 characters do the hook work, since that's all the feed view shows.