Meta Description Length in 2026: Pixel Limits, Not Character Counts

The short answer

Write meta descriptions of roughly 120 to 155 characters, with the part that matters most inside the first 120. Google doesn't actually enforce a character limit — its own documentation says there is no limit on how long a meta description can be — but it truncates the snippet to fit the results page, and that cut is made by rendered width in pixels, not by counting letters. On desktop the description line runs out at about 920 pixels, which works out to around 155–160 characters of ordinary text. Anything longer isn't penalised; it just ends in an ellipsis.

Why Google measures pixels, not characters

Search results are set in a proportional font, so every character has a different width. A capital W is several times wider than a lowercase i or l. Two descriptions of exactly 155 characters can render at very different widths: one full of short lowercase words fits with room to spare, while one heavy with capitals, numbers and wide letters like m and w gets cut well before its last word.

That is why the familiar "155 characters" rule works most of the time and fails at the edges. It is an average for typical English copy, not the thing Google checks. If your descriptions lean on product codes, ALL-CAPS brand names or long numbers, the safe character count drops.

Desktop, mobile, and the date that eats your space

• Desktop: about 920 px, commonly measured as 155–160 characters. This is the most consistently measured number and the one most preview tools use.
• Mobile: about 120 characters (roughly 680 px). Portent's 2020 study of real results found mobile descriptions peaked at 118 characters and dropped off sharply after 121. The cut still varies with screen width, so treat 120 as the point your key message should be finished by, not as a hard wall.
• Dated results: when Google shows a date in front of the snippet (common on blog posts and news), the date uses part of the line. The same study put the safe target at about 138–148 characters on desktop and as little as 95–105 on mobile when a date is present — the strongest argument for front-loading.

Google briefly showed much longer snippets — up to about 320 characters — from late 2017, then shortened them again in 2018. Guides that still recommend 300-character descriptions date from that window.

What happens if a meta description is too long?

Nothing bad, beyond the truncation. Google has said for years that the meta description is not a ranking factor: it affects whether people click, not where the page ranks. A description that runs to 200 characters is shown cut off mid-sentence, and the words after the ellipsis simply aren't seen. The real cost is a snippet that stops before its point — a price, a benefit, or the answer the searcher was looking for.

Too short has a cost as well. A 50-character description uses about a third of the line, leaving out the detail — a spec, a price, a reason to choose this page — that could have earned the click.

When Google rewrites it anyway

Length is only half the question, because Google frequently ignores the description you wrote. An Ahrefs study published in 2020 found Google rewrote meta descriptions 62.78% of the time; Portent's study the same year put it at 68% on desktop and 71% on mobile. Google's documentation explains why: it builds snippets primarily from page content, and uses the meta description when that describes the page better for the specific query.

Rewrites are most likely when the description doesn't address what was searched (long-tail queries trigger them constantly), when many pages share the same boilerplate description, or when the description is missing or stuffed with keywords. You can't prevent rewrites, but you can make your version the best available answer for the page's main query.

How to write one that survives

A description built this way looks like this:

<meta name="description" content="Compare 12 trail running shoes
  tested on mud, rock and wet roots. Grip, weight and price for each,
  plus the two we'd buy again.">

Controlling the snippet directly

If you need a hard ceiling rather than a best guess, Google supports two controls. The max-snippet robots directive caps the number of characters Google may show as a text snippet for the page, and the data-nosnippet attribute keeps a specific passage out of snippets altogether:

<!-- Cap the snippet Google may show for this page -->
<meta name="robots" content="max-snippet:160">

<!-- Keep one passage out of snippets entirely -->
<p>Price: $129. <span data-nosnippet>Sale ends Friday.</span></p>

Use these sparingly. A low max-snippet value can also limit how the page appears in other result features. For the wider picture of which head tags do what, see the complete meta tags guide; and because the title shares the same pixel logic at a larger font size, it is worth checking both together.

Check your length in pixels

CheckSEO's SERP Snippet Preview shows your title and meta description as a Google result, with the live pixel width against the 920 px description limit and the 580 px title limit — the quickest way to see whether your last words survive, and to fix them if they don't.