Character Counter – Check Twitter, SMS & Platform Limits

Character Counter: Check Your Text Against Platform Limits

Writing a tweet, an SMS, or a meta description all come with strict character limits — and going even one character over can cause your text to get cut off or rejected. A character counter tracks this instantly, showing exactly how much room you have left as you type.

Characters With Spaces vs Without Spaces

Most platforms count characters including spaces — this is the standard method and what the main counter on this tool shows. A separate "No Spaces" figure is also provided, since some older character-limit contexts (certain database fields, for example) count differently. When in doubt, use the "with spaces" figure, since it matches how the overwhelming majority of platforms actually calculate their limits.

How Twitter/X Actually Counts Characters

Twitter's (X's) 280-character limit has one notable exception: URLs are automatically shortened to count as exactly 23 characters, regardless of how long the actual link is. This tool counts all characters at face value, so if your text includes a long URL, your actual usable character count on Twitter/X may be higher than what this counter shows, since the platform will shorten that link before counting it.

SMS Character Limits and Encoding

A standard SMS message supports up to 160 characters using GSM-7 encoding, which covers standard Latin letters, numbers, and basic punctuation. If your message includes emoji or certain special characters, phones switch to Unicode encoding, which drops the per-message limit to 70 characters. Longer messages are typically split into multiple segments and billed accordingly by carriers, even though they appear as one message to the recipient.

Using the Character Type Breakdown

Beyond the total count, this tool separates your text into letters, numbers, spaces, symbols, emoji, and new lines — useful for spotting unexpected characters (like invisible formatting artifacts from pasted text) or checking how much of your content is actual readable text versus punctuation and symbols.

Limitations to Keep in Mind

• Platform character limits change periodically as companies update their policies — the presets in this tool reflect commonly cited limits at the time of writing, but it's worth double-checking a platform's current official limit before a critical post.
• Twitter/X's URL-shortening behavior means this tool's raw character count may not exactly match what Twitter/X itself will count for text containing links.
• Emoji detection covers most common emoji but may not catch every newer or compound emoji character perfectly, given how frequently new emoji are added to the Unicode standard.

Related Tools You Might Need

If you need a fuller picture of your writing — including reading time and readability — the Word Counter covers those in more depth. Once your text fits the limit, the Case Converter can help format it before you post.

Frequently Asked Questions

Does this counter include spaces in the character count?

Yes, the main character count includes spaces, matching how most platforms count characters. A separate "No Spaces" figure is available if you need it.

Why does my Twitter post fit when this tool says I'm over the limit?

This usually happens because your text includes a URL. Twitter/X automatically shortens any link to exactly 23 characters for counting purposes, while this tool counts the full URL length. Your actual usable limit on Twitter/X may be higher than what's shown here if your text contains links.

Why does adding an emoji reduce my SMS character limit?

Emoji and many special characters require Unicode encoding, which drops the per-message SMS limit from 160 to 70 characters. This is a limitation of SMS technology itself, not of this counting tool.

Can I set a custom character limit that isn't in the preset list?

Yes — type any number directly into the limit field to track your text against a custom limit, useful for platforms or fields not covered by the built-in presets.