Caption length tool
Social Media Character Counter
Count characters and words for captions, bios, short posts, social ads, comments, and mobile-first copy.
- Free
- No Signup
- Private Browser-Based Tool
- Works on Mobile
Private browser-based tool
Social Media Character Counter
Count characters and words for captions, bios, short posts, social ads, comments, and mobile-first copy.
What is a social media character counter?
A social media character counter measures the length of captions, bios, posts, comments, and ads. It helps creators write short, clear copy that fits platform fields and stays easy to read on mobile screens.
Who is this tool best for?
Best for creators, social media managers, advertisers, small businesses, and writers drafting captions or short posts.
- Count caption characters
- Check bio length
- Draft ad copy
- Shorten mobile posts
- Review hashtags and calls to action
- Compare words and characters
Simple workflow
How to Use Social Media Character Counter
Paste or type text
Add your draft, article, essay, caption, email, script, or document to the text box.
Review instant results
Check the live stats, warnings, table, or formatted output without refreshing the page.
Edit for clarity
Use the signals to shorten, format, clean, or improve the text for real readers.
Copy or download
Copy the final text or download a TXT file when you are ready.
Quick reference
Short Copy Checks
Use these ranges as practical editing guides. Exact requirements can vary by school, publisher, platform, or client.
| Use | Guide |
|---|---|
| Caption | Keep it clear and scannable |
| Bio | Lead with the main value |
| Social ad | Make the offer easy to understand |
| Comment | Keep the message focused |
| Call to action | Use direct, useful wording |
Works for English Writing Worldwide
SentencesCounter is built for English writing used in the United States, United Kingdom, Canada, Australia, New Zealand, Ireland, South Africa, and international English-language teams that publish in English.
Privacy-First Browser Processing
The tool runs in your browser. It does not require signup and does not upload your pasted draft by the counter. This is useful for essays, emails, business documents, scripts, and unpublished website copy.
Helpful answers
Frequently Asked Questions
Can I count social media caption characters?
Yes. Paste your caption into the counter to see characters, words, sentences, and readability.
Does it track every platform limit?
No. Platform limits can change. Use this as a fast text length checker and confirm exact limits inside the platform.
Can I use it for bios?
Yes. It is useful for profile bios, captions, social ads, and short posts.
Does it count spaces?
Yes. It shows characters with spaces and characters without spaces.
Can it help with mobile readability?
Yes. Shorter sentences and paragraphs are easier to read on mobile.
Is my caption private?
Yes. The count happens in your browser.
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