Character Limits on Social Media: A Complete Guide

Crafting the perfect social media post requires knowing the character limits of each platform. Here's a comprehensive guide to help you optimize your content.

Twitter/X

• Tweets: 280 characters
• Direct Messages: 10,000 characters
• Username: 15 characters
• Bio: 160 characters

Tip: Tweets with 71-100 characters get 17% more engagement than longer tweets.

Facebook

• Posts: 63,206 characters
• Comments: 8,000 characters
• Page Description: 255 characters
• Username: 50 characters

Tip: Posts with 40-80 characters receive 86% more engagement.

Instagram

• Captions: 2,200 characters
• Bio: 150 characters
• Username: 30 characters
• Hashtags: 30 per post (recommended: 5-10)

Tip: Only the first 125 characters show before "more"—make them count!

LinkedIn

• Posts: 3,000 characters
• Articles: 120,000 characters
• Headlines: 120 characters
• About/Summary: 2,600 characters

Tip: Posts with 1,900-2,000 characters perform best.

TikTok

• Captions: 2,200 characters
• Bio: 80 characters
• Username: 24 characters

YouTube

• Video Title: 100 characters (70 recommended)
• Description: 5,000 characters
• Comments: 10,000 characters
• Channel Description: 1,000 characters

Pinterest

• Pin Description: 500 characters
• Board Description: 500 characters
• Profile Bio: 160 characters

Best Practices

• Use a word counter to check your character count before posting
• Front-load important information since many platforms truncate
• Leave room for links and hashtags
• Test different lengths to see what resonates with your audience