How long can a TikTok caption be?

TikTok captions can be up to 4,000 characters long. This includes all text, hashtags, mentions, and emojis. In the feed, captions are truncated after roughly 100–150 characters, so put your most important content first.

How many characters can a TikTok bio be?

TikTok profile bios are limited to 80 characters. This is enough for a short sentence describing your niche or value proposition. Links in the bio text are not clickable — use the dedicated Website field on your profile for a clickable URL.

How many hashtags can you use on TikTok?

You can use up to 30 hashtags per TikTok video. However, all hashtags count toward the 4,000-character caption limit. TikTok recommends using 3–5 focused hashtags rather than filling the maximum, as targeted tags tend to reach the right audience more effectively.

What is the TikTok comment character limit?

TikTok comments are limited to 150 characters per comment. This applies to both top-level comments and replies. If you need to say more, you can post multiple comments in sequence.

TikTok Character Limits Guide (2026)

TikTok video captions support up to 4,000 characters. Your profile bio is capped at 80 characters, usernames at 24 characters, and comments at 150 characters. You can add up to 30 hashtags per post, though TikTok recommends using 3–5 focused hashtags for better reach.

Published April 10, 2026

TikTok Character Limits Quick Reference

Field	Character Limit	Notes
Video Caption / Description	4,000	Includes hashtags and emojis
Profile Bio	80	Plain text; links not clickable in bio text
Username	24	Letters, numbers, underscores, and periods only
Display Name	30	Can include spaces and most special characters
Comment	150	Per comment; replies follow the same limit
Hashtags per post	30 max	TikTok recommends 3–5 relevant hashtags
Live stream title	30	Displayed while going live
Duet / Stitch caption	4,000	Same limit as standard video captions

TikTok Video Caption Character Limit

TikTok video captions (also called descriptions) allow up to 4,000 characters. This count includes all text, hashtags, mentions, and emojis. Each emoji counts as 1 character.

In the TikTok feed, captions are truncated after roughly 100–150 characters with a "more" prompt. Front-load your most important message or hook in the first two lines so viewers see it without tapping to expand.

TikTok Bio Character Limit

Your TikTok profile bio is limited to 80 characters. This is a tight limit — roughly one short sentence. Use it to communicate your niche, value proposition, or a call to action such as a link-in-bio prompt.

Links placed in the bio text are not clickable. To add a clickable link, use the dedicated "Website" field on your profile page, which is available to all accounts.

TikTok Username and Display Name Limits

TikTok usernames are limited to 24 characters and can only contain letters, numbers, underscores (_), and periods (.). Usernames are unique and cannot be changed more than once every 30 days.

Display names allow up to 30 characters and support spaces, most special characters, and emojis. Display names are separate from usernames and can be changed more freely without the 30-day restriction.

TikTok Hashtag Limits and Best Practices

TikTok allows up to 30 hashtags per video, but all hashtags count toward the 4,000-character caption limit. Using the maximum number of hashtags does not reliably increase reach and can make captions look spammy.

TikTok's own guidance recommends using 3–5 targeted hashtags: one broad niche tag, one or two mid-size community tags, and one trending or challenge tag when relevant. This focused approach typically outperforms bulk-hashtag strategies.

Tips for Writing Effective TikTok Captions

Put your strongest hook or key message in the first 100 characters — that's what displays before the "more" truncation in feed.

Use 3–5 specific hashtags rather than 20+ generic ones to help TikTok's algorithm categorize your content accurately.

Include a clear call to action (e.g., "Follow for more," "Drop a comment below") to drive engagement signals.

Emojis each count as 1 character and can break up text visually without using much of your 4,000-character budget.

Use the caption to add context or keywords that aren't spoken in the video — TikTok indexes caption text for search.

Keep your bio punchy: 80 characters is enough for your niche + one action (e.g., "Daily marketing tips | Link below").

TikTok Character Limit Highlights

Caption Limit

4,000 characters

Includes all hashtags, mentions, and emojis

Bio Limit

80 characters

Roughly one concise sentence

Username Limit

24 characters

Alphanumeric, underscores, and periods only

Comment Limit

150 characters

Per comment or reply

Recommended Hashtags

3–5

Per post, focused on niche and community

Frequently Asked Questions

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