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← Sydium
Free Tool

Social Media Character Counter

Check your caption length against all major platform limits in real-time. Optimize for engagement.

0characters
0no spaces
0words
1lines
0hashtags
0emojis

Platform Limits

See how your caption fits each platform's character limits

📸Instagram
0
Current
150
Ideal
2,200
Max
Too short
🎵TikTok
0
Current
125
Ideal
4,000
Max
Too short
▶️YouTube
0
Current
250
Ideal
5,000
Max
Too short
💼LinkedIn
0
Current
200
Ideal
3,000
Max
Too short
𝕏Twitter/X
0
Current
100
Ideal
280
Max
Too short
👤Facebook
0
Current
80
Ideal
63,206
Max
Too short
🦋Bluesky
0
Current
150
Ideal
300
Max
Too short
📌Pinterest
0
Current
150
Ideal
500
Max
Too short

Caption Tips

Start with a Hook

The first line is crucial on every platform. Capture attention immediately to stop the scroll.

Adapt by Platform

Twitter needs punchy copy, LinkedIn prefers professional tone, TikTok loves trendy phrases. Match your voice to each platform.

Strategic Hashtags

Instagram loves 5-10 hashtags, Twitter prefers 1-2, LinkedIn works best with 3-5. Quality over quantity always.

Include a CTA

End with a clear call-to-action. Ask a question, invite comments, or direct to your link in bio.

Want AI to write optimized captions?

Sydium generates platform-perfect captions in your unique voice.

Try Sydium Free

Frequently Asked Questions

What is the character limit for Instagram captions?

Instagram captions can be up to 2,200 characters. However, captions are truncated after 125 characters in the feed, so put your most important content first. The ideal length for engagement is 138-150 characters.

What is Twitter's character limit?

Twitter (now X) has a 280 character limit for standard tweets. Twitter Blue subscribers can post up to 25,000 characters. For maximum engagement, aim for 71-100 characters.

How many characters can I use on TikTok?

TikTok captions can be up to 4,000 characters. However, shorter captions (100-150 characters) tend to perform better as users scroll quickly. Include your most important message and hashtags within the first 100 characters.

What is LinkedIn's post character limit?

LinkedIn posts can be up to 3,000 characters. Posts are truncated after about 140 characters with a 'see more' link. For professional content, 1,300-2,000 characters often performs well.

Do emojis count as one character?

Most emojis count as 2 characters due to Unicode encoding. Some complex emojis (like those with skin tone modifiers or family emojis) can count as 4-7 characters. Our counter accurately tracks emoji characters.

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