TikTok Character Limit (2026) | Captions, Bio, Comments & Ads

Published: April 2026 | Last Updated: April 2026

Quick Answer

TikTok captions allow up to 4,000 characters. Bios are limited to 80 characters, and comments are capped at 150 characters.

Field	Character Limit	Notes
Caption	4,000	Increased from 2,200 in 2023
Bio	80	One of the tightest bio limits across platforms
Username	24	Letters, numbers, periods, and underscores
Comment	150	Surprisingly short compared to other platforms
Name / Display Name	30	Your visible display name
TikTok Ad Headline	100	Spark Ads and In-Feed ad headlines
TikTok Ad Description	100	Ad description text
Hashtags	Included in caption	Count towards the 4,000 caption limit

Shorter captions often win. Despite the 4,000 character limit, most viral TikToks use captions under 150 characters. Save the storytelling for the video.
Your bio is only 80 characters. That's extremely tight. Be direct — state what you do and for whom. No fluff.
Hashtags eat your caption limit. Every hashtag including the # counts towards your 4,000 characters.
Comments are just 150 characters. Keep replies punchy and engaging. This is shorter than a tweet.
Check before posting. Use our character counter to make sure your TikTok caption and bio fit perfectly.

Paste your TikTok caption or bio into our free word counter tool. See your character count instantly — no sign-up required.

Paste your text into our free word counter tool to instantly count words, characters, sentences, paragraphs and pages.

What is the TikTok caption character limit?

TikTok captions can be up to 4,000 characters. This was increased from 2,200 characters in 2023 to allow more detailed descriptions.

What is the TikTok bio character limit?

TikTok bios are limited to 80 characters — one of the shortest bio limits across major social platforms.

How long can a TikTok comment be?

TikTok comments are limited to 150 characters. This is shorter than a standard tweet.

Do hashtags count towards TikTok's caption limit?

Yes. Hashtags are included within the 4,000-character caption limit. Each hashtag (including the # symbol) reduces your available caption space.

What's the ideal TikTok caption length?

For maximum engagement, keep captions between 50–150 characters. Use the full 4,000 only when the content genuinely benefits from a detailed caption.