Character Limits Cheat Sheet: X/Twitter, Meta Descriptions, Bios and More

Published August 31, 2026

Character limits are one of those small, boring constraints that quietly ruin things. A meta description gets cut off mid-sentence in Google. A carefully written X post loses its last clause. An SMS campaign silently becomes three messages and triples in cost. This page collects the limits that actually matter in 2026, explains the ones that behave unexpectedly — emoji, links, pixel-based truncation — and shows how to check any text against them in seconds.

The limits, at a glance

These are the current figures for the places people most often hit a wall. Platforms do change them, so treat this as a working reference and verify anything you are automating against.

The three limits that behave strangely

1. Meta descriptions are measured in pixels, not characters

This surprises almost everyone. Google truncates a search snippet based on the width of the rendered text, not the number of characters. A description made of narrow letters — i, l, t, f — fits more characters than one made of wide ones — m, w, capital letters. The desktop container is roughly 920 pixels wide, which works out to about 150–160 typical characters, and mobile is narrower still.

Two consequences follow. First, an ALL-CAPS phrase eats your budget far faster than the character count suggests. Second, the character number is a guideline, not a guarantee — so front-load the meaning. If your description still makes sense when the last third is cut, truncation costs you nothing.

2. Links on X always cost exactly 23 characters

X replaces every URL with its own wrapper, so a link is counted as a fixed 23 characters regardless of its real length. A 4-character link and a 300-character link with tracking parameters cost the same. This means running your URL through a shortener before posting saves you nothing at all — and shorteners often reduce click-through, because people can no longer see where they are going. Attached images, GIFs, video and polls consume no characters.

3. One emoji can cost you 90 characters in an SMS

A plain SMS holds 160 characters because it uses a compact 7-bit alphabet. The moment your message contains a single character outside that alphabet — an emoji, a curly quote, an em dash, an accented letter — the whole message switches to a 16-bit encoding and the per-segment limit drops to 70 characters. Longer messages are split into segments, and each segment is billed separately, so one decorative emoji can turn a one-part message into three.

The same underlying issue affects social platforms more mildly: on X most emoji count as two characters, and combined emoji such as flags or multi-person family emoji can count as several.

Front-load everything: the truncation rule

Notice how many rows in the table have a limit and a much smaller "practical target". That gap is where most writing goes wrong. Almost nothing shows your full text by default:

• Instagram shows roughly the first 125 characters of a caption before the "more" link.
• LinkedIn collapses posts after around 200 characters on most screens.
• YouTube displays about 150 characters of a description above the fold.
• Email clients on phones commonly show 30–40 characters of a subject line.
• Google truncates titles at roughly 600 pixels, about 50–60 characters.

So the real skill isn't hitting the maximum — it's making the visible portion work on its own. Write the hook, the keyword, or the benefit into the opening clause, and treat everything after the cut-off point as a bonus for people who chose to expand it.

Characters with spaces vs. without

Any decent counter shows both numbers, and they serve different purposes. Characters with spaces is what platforms enforce — X, SMS, meta tags and virtually every form with a limit count a space as a character. Characters without spaces shows up in publishing and translation work, where fees are sometimes quoted per character, and occasionally on application forms. If a form gives you a limit without saying which it means, assume it includes spaces; that assumption is safe far more often than the alternative.

How to check your count in seconds

1. Open the Word & Character Counter.
2. Paste in your post, meta description, bio or SMS text.
3. Read the live totals: characters, characters without spaces, words, sentences, paragraphs and reading time.
4. Trim against the "practical target" column above rather than the hard limit — that's what keeps your text intact where it's actually displayed.

If you're writing meta descriptions in bulk, one useful habit: draft them all in a plain text file, then paste them in one at a time to check. It's faster than editing inside a content system that hides the count from you.

Is it private and free?

Yes. The counter is 100% private — everything is processed inside your browser and your text is never uploaded to a server, which matters for unpublished campaign copy. It's free, with no sign-up, and it keeps working offline once the page has loaded.