Social Media Character Counter - Free Online

A social media character counter shows how long your post is and checks it against the limits for X, LinkedIn, Facebook, Instagram, TikTok, YouTube, Pinterest and Google Ads. Paste your draft into the box and you instantly see characters, words and lines, plus how many characters you have left or are over for each of 12 fields.

What Are Social Media Character Limits?

Social media character limits are the maximum number of characters a platform lets you enter in a specific field, such as a post, bio, title or ad headline. Letters, numbers, spaces, punctuation and emoji all take up room, so a short-looking caption can still run long.

Limits belong to a field, not just a platform. Instagram allows a long caption but only a short bio. YouTube allows a long description but a much shorter title. Google Ads is the strictest of all, with headlines capped at 30 characters. That is why one text box checked against many fields is useful: you can see at a glance which version of your message fits where.

People also search for "social media characteristics," which is a different topic (the traits of social networks). This page is about the length of the text you publish.

How to Use the Social Media Character Counter

You use the counter by typing or pasting text into one box and reading the results underneath. Nothing else needs to be set up.

1. Find the box labeled Your Text.
2. Type your post, or paste a draft from your notes, document or scheduling app. The placeholder reads "Type or paste your social media post here..."
3. Watch the three counters above the platform list: Characters, Words and Lines. They update as you type.
4. Scroll to "Platform estimates (account and post-type limits may differ)". Each row shows a platform field, a progress bar, the remaining or excess characters, and a count such as 142 / 150 chars.
5. Trim or expand your text until every field you plan to use shows "left" instead of "over".
6. Copy the final version back into your platform or ad account.

Worked Example: One Draft, Twelve Limits

Here is how a single draft performs across the fields. Say you write a 142-character announcement for a spring sale and paste it into the box. The tool shows 142 characters and the platform rows update at once.

• Twitter / X: 138 left, bar green (142 of 280).
• Instagram Bio: 8 left, bar yellow (142 of 150 is about 95%).
• LinkedIn Headline: 78 left, bar green.
• YouTube Title: 42 over, bar red (142 against 100).
• Google Ads Description: 52 over (142 against 90).
• Google Ads Headline: 112 over (142 against 30).

What this tells you: the draft works as a post on X, LinkedIn or Instagram, but it cannot be a YouTube title or an ad as written. You would cut it to about 90 characters for an ad description, then pull a punchy phrase of 30 characters or fewer for the headline. One draft becomes three right-sized pieces of copy in a few minutes.

How Do You Read the Results?

Each platform row tells you three things: how full the field is, how much room remains, and whether you have crossed the limit. The color of the bar and the number give you the answer without any math.

What the colors mean

• Green: you are at or below 80% of the limit. You have room to add a hashtag, link or call to action.
• Yellow: you have used more than 80% of the limit. You still fit, but a small edit could push you over.
• Red: you are over the limit. The row shows how many characters to remove.

Limits the counter checks

Words and lines

The word count splits your text on spaces and line breaks, so a hyphenated term counts as one word. The line count tells you how many separate lines you typed, which helps when you format a LinkedIn post with short paragraphs or a caption with a hashtag block at the bottom.

Who Is This Tool For?

The counter helps anyone who writes short text under a hard limit, and it saves the most time when you reuse one message in several places.

• Social media managers adapt one announcement into an X post, an Instagram caption and a LinkedIn update without trial and error in each app.
• Paid search marketers check ad headlines against 30 characters and descriptions against 90 before uploading them.
• YouTube creators test video titles against 100 characters and descriptions against 5,000.
• Freelancers and agencies send clients copy that is already confirmed to fit every field.
• Job seekers and founders fit a LinkedIn headline into 220 characters or an Instagram bio into 150.

If you are starting from a blank page, try the social media caption generator for a first draft, then bring it here to trim it. For profile text, the social media bio generator gives you options that you can check against the bio limits.

Best Practices, Common Mistakes and Troubleshooting

Staying under a limit is the minimum. A post that is technically allowed can still perform poorly if the important part is hidden, so use these habits.

Put the key message first

Many feeds show only the beginning of a long caption before a "more" link. On Instagram, LinkedIn and Facebook, lead with the hook, offer or question, and keep the less important detail for later. YouTube titles are often cut off in search results after roughly 60 characters, so put the main keyword near the front even though 100 characters are allowed.

Leave a safety margin

The numbers are estimates. If a field is close to its limit, aim for 10 to 20 characters of buffer, especially for X and Instagram bios. A margin protects you if the platform counts a link, emoji or line break differently than expected.

Common mistakes

• Treating one limit as the limit for everything. A caption that fits Instagram at 2,200 characters is far too long for X at 280.
• Forgetting spaces and line breaks. Both count as characters. Blank lines used for spacing add up in long posts.
• Adding hashtags last. A caption at 270 of 280 characters has no room for tags. Write them in from the start, or generate them with the hashtag generator before you count.
• Ignoring ad limits. A Google Ads headline over 30 characters will not fit, so shorten the wording rather than hoping it is cut off cleanly.

If the count looks wrong

• The number is higher than expected: check for trailing spaces, double spaces or extra blank lines at the end of your pasted text.
• Emoji seem to count differently: some emoji are built from several symbols joined together, and platforms do not always count them the same way. Test emoji-heavy posts with extra margin.
• The native app disagrees with the counter: trust the app for the final check, and use this page to get close before you publish.
• The text looks odd after pasting from a document: smart quotes and hidden formatting can come along. Paste as plain text for a cleaner count.

Think about timing too

Once the copy fits, the next question is when to publish it. The best time to post calculator helps you pick a posting window by region and platform.

Limitations and Accuracy Notes

The counter shows estimates based on commonly published limits for each field. Platforms can change their limits, and some accounts differ: paid or verified accounts may be allowed longer posts, and a field can behave differently for a post, a reel or an ad format. That is why the tool labels the list as estimates and says account and post-type limits may differ.

The tool counts text only. It does not check image sizes, video length or hashtag quality. For visuals, the social media image size checker covers dimensions for each placement.

Paste your draft into the box above to see exactly where it fits and where it needs a trim. When you are ready for more help with posts, profiles and visuals, browse the full YouTube and social media tools collection.