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Free Bluesky character counter

Bluesky gives you 300 characters per post.

0/ 300 characters
Fits on Bluesky300 left

Hashtags 0Mentions 0Emojis 0Words 0Lines 0

Bluesky counts every letter, space, emoji and line break as 1.

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How Bluesky counts

300 characters per post

Bluesky caps a post at 300 characters, close to X's 280.

Combined emojis count as 1

Bluesky counts a family or skin-tone emoji as 1. This counter counts it as several, so a post that's too long never slips through.

Longer? Reply to yourself

Bluesky threads are replies to your own post, so split long ideas into a chain.

Example: “Just moved our brand to Bluesky 🦋 What should we post first?” = 60 characters on Bluesky

Limits checked on October 10, 2026, against each network's rules and the limits Mydrop's editor enforces.

Mydrop data

How long should a caption be? Past 80 characters, it barely matters.

We measured 4,848 posts on 336 accounts connected to Mydrop, over 180 days to September 2026. Each post is scored against its own account's median, so a global brand and a local shop compare fairly.

Engagement vs the account's typical post

under 80 characters702 posts−9%
80-150 characters521 posts+3%
150-300 characters914 posts±0%
300-600 characters1,632 posts±0%
600+ characters1,079 posts+1%
  • Captions under 80 characters earned 9% less engagement than the account's typical post.
  • Captions of 80 to 150 characters did best, 3% above.
  • From 150 to 600+ characters, length moved engagement by 1% or less.

Method and every Mydrop benchmark

Reference

Every character limit in one table

The limits Mydrop checks before it publishes a post, network by network.

NetworkCharacter limitSeen before "more"HashtagsHow it counts
Instagram2,200About 1255 per post1 per character
TikTok2,200 via the API (4,000 typed in the app)VariesInside the limitEmoji = 2
LinkedIn3,000About 210 (140 on phones)Inside the limit1 per character
X280 (longer with Premium)Full post shownInside the limitEmoji = 2, link = 23
Facebook63,206 (Reels: 2,200)VariesInside the limit1 per character
Threads500Full post shown1 topic tag1 per character
Bluesky300Full post shownInside the limit1 per character
YouTube5,000 (description; title 100)First linesFirst 3 show above the title1 per character
Pinterest800 via the API (500 in Pinterest's editor)VariesInside the limit1 per character
Google Business Profile1,500VariesNot used1 per character

Where the "more" cut lands depends on the screen and the line breaks, so treat those figures as a guide. The character limits are hard limits: the network refuses anything longer.

Link to this counter

Writing a guide or teaching a class? Paste this link.

Bluesky Character Counter by <a href="https://mydropai.com/tools/bluesky-character-counter/">Mydrop</a>

Questions

Character limits, answered

300 characters per post. Spaces and line breaks count too.

Bluesky counts a combined emoji (skin tones, families) as 1. This counter counts it as several, so a post that's too long never slips through.

Split it into a thread or trim it. Mydrop's editor flags the limit and lets you give Bluesky its own shorter version.

Yes. No signup, no limit, and your text never leaves your browser.

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