Does caption length affect reach?

Length itself is not a ranking signal. A clear first line matters more than filling the cap.

Is this a live campaign figure?

No. The figure is computed in this browser from the numbers you typed. A live TrueWave campaign also names the cycle, the counted platforms, and the age of the scrape.

How should a creator brief use this?

Lead with the searchable hook. Keep hashtags short.

Tools › Specs

TikTok character counter — caption, bio, comment limits

Last changed 2026-09-15

Count against the live field cap before a creator posts.

Field

Caption

Characters

0 / 4000

4000 remaining. First line 0 / 90.

Limits

What counts as a character?: JavaScript string length. Emoji and CJK count as the platform stores them.
Why does the first line matter?: The For You card shows about 90 caption characters before “more”. Put the searchable line first.
Caption vs bio vs comment?: Caption 4000, bio 80, username 24, comment 150. Re-check in the app before a launch.

Counted

Published 2026 field and pixel limits

Window

Current TikTok / Instagram published caps

Age

Re-check in the app before a launch

Method

How the number is made

Length is the JavaScript string length of the typed field, checked against TikTok's published maximums.

A missing or zero denominator is an em dash, never a fabricated zero.

FAQ

Questions this page answers

What are the TikTok character limits?: Caption 4,000. Bio 80. Username 24. Comment 150.
Does caption length affect reach?: Length itself is not a ranking signal. A clear first line matters more than filling the cap.
Is this a live campaign figure?: No. The figure is computed in this browser from the numbers you typed. A live TrueWave campaign also names the cycle, the counted platforms, and the age of the scrape.
How should a creator brief use this?: Lead with the searchable hook. Keep hashtags short.

Also

Other campaign tools

TikTok caption generator with hashtag set
Lead with the searchable line. Hashtags stay short.
TikTok bio generator for creator accounts
Eighty characters to name who the account is for.
TikTok hashtag generator — broad, niche, micro
A short, relevant set. A wall of tags is not a strategy.
All creator-campaign tools

Run it as a measured campaign

TrueWave operates human creator campaigns: scripts, measured views, spend and CPM. Write if you want that run for a brand.

Talk about a campaign Start a campaign

TrueWave

Limits

What counts as a character?

JavaScript string length. Emoji and CJK count as the platform stores them.

Why does the first line matter?

The For You card shows about 90 caption characters before “more”. Put the searchable line first.

Caption vs bio vs comment?

Caption 4000, bio 80, username 24, comment 150. Re-check in the app before a launch.

Questions this page answers

What are the TikTok character limits?: Caption 4,000. Bio 80. Username 24. Comment 150.
Does caption length affect reach?: Length itself is not a ranking signal. A clear first line matters more than filling the cap.
Is this a live campaign figure?: No. The figure is computed in this browser from the numbers you typed. A live TrueWave campaign also names the cycle, the counted platforms, and the age of the scrape.
How should a creator brief use this?: Lead with the searchable hook. Keep hashtags short.