Character Counter for Social Media: Exact Limits for Every Platform

September 5, 2026 · 4 min read

Every social media platform has character limits, and they are not consistent. A post that fits perfectly on LinkedIn gets cut off on X. A caption that works on Instagram is too long for a tweet. Knowing the exact limits — and checking your count before posting — prevents truncated messages and lost engagement.

2026 Character Limits by Platform

X (Twitter): 280 characters for standard posts, 25,000 for X Premium subscribers. Instagram: 2,200 characters for captions, 150 for bio. LinkedIn: 3,000 characters for posts, 2,600 for articles summary. Facebook: 63,206 characters for posts (but only the first 480 show before See More). TikTok: 4,000 characters for captions. YouTube: 5,000 characters for descriptions, 100 for titles.

Why the First Characters Matter Most

On most platforms, only the first few lines are visible before the reader taps to expand. LinkedIn shows about 150 characters before the See More button. Facebook shows about 480. Instagram shows roughly 125 in the feed. Your hook must land in those opening characters or the rest of your post never gets read.

Spaces and Emojis Count

Spaces count as characters on every platform. Most emojis count as 2 characters because they use multi-byte encoding. URLs count at their full length on most platforms (X shortens them to 23 characters automatically). Hashtags include the # symbol in the character count.

Best Practices

Write your post, check the character count, then optimize. Front-load the most important information. Use line breaks strategically — they use characters but dramatically improve readability. For X, aim for 70-100 characters for maximum engagement, even though the limit is 280.

Try It Now

Our free Character Counter handles this instantly — no signup, no limits.

Also useful: our Word Counter for related calculations.