How Long Should a Meta Description Be?

Around 145 characters is a safe desktop target, and about 110 if you care about mobile. That is lower than the 155 to 160 characters almost every guide recommends, and the reason is straightforward: Google does not truncate by character count at all.

Google measures pixel width, not character count

Search snippets are cut to fit a container roughly 920 pixels wide on desktop and 680 on mobile. Characters are not the unit. A capital W is several times wider than a lowercase i, so two descriptions of identical length can render at wildly different widths, and only one of them gets truncated.

This is easy to verify rather than take on faith. Rendering three 155-character strings at 14px Arial, the font Google uses for desktop descriptions, and measuring each one:

The extremes are unrealistic, since nobody writes a description in solid capitals. The middle row is the one that matters. 155 characters of ordinary English prose measures 958 pixels, which is already past the budget. The advice everyone repeats recommends a length that gets cut.

Measuring where ordinary prose actually crosses the line: about 149 characters fits 920px, and about 111 characters fits the 680px mobile container. Leaving a little headroom for wider-than-average wording gives the 145 and 110 in the first paragraph.

Write the first line for mobile

So how long should a meta description be, given two numbers that far apart? The question itself is the wrong frame. A description written to 145 characters loses roughly its last quarter on a phone.

The practical approach is to front-load. Put the thing that earns the click in the first ~110 characters and treat the remainder as a bonus that desktop users see. If your description only makes sense read to the end, it is built to fail on the majority of traffic.

Two things worth knowing before you spend much time on this

It is not a ranking factor

Google has been consistent for years that the meta description does not influence rankings. It influences whether someone clicks the result you already earned. That is worth something, but it means a description is a piece of ad copy rather than a lever on position, and no amount of keyword-stuffing it will move you up the page.

Google will often ignore what you wrote

Search engines frequently replace the supplied description with text pulled from the page itself, particularly when the query matches page content that the description does not cover. Google says this is intentional: the aim is a snippet that answers the specific query, and a single fixed description cannot do that across every query a page ranks for.

The useful conclusion is not “don’t bother”. It is that a description works best as a strong general-purpose summary, and that perfecting one to the character is time better spent on the page.

A workable checklist

• Aim for 110–145 characters. Put the important half first.
• Make it specific to the page. A description that would fit any page on the site invites Google to write its own.
• Write it as a reason to click, not a summary of the page. It sits under a headline and competes with nine others.
• Do not keyword-stuff. It does not rank, and Google bolds query matches automatically wherever they appear.
• Avoid double quotes, which can cause awkward truncation in some renderings.
• Check the count, then sanity-check the wording. If it is full of long words or capitals, come down a few characters.

The Word Counter shows a live character count with a meta description limit marked, and it labels that row approximate for exactly the reason above.

Why every tool gives you a slightly different limit

Because every character limit you see is an approximation of the same pixel measurement, and each tool picks a different safety margin. 155, 158, 160 and 120 are all defensible translations of “920 pixels” depending on what text you assume. None of them is the real rule.

If a description matters enough to argue about, the honest check is to look at it — search for the page, or use a SERP preview that renders in the actual font. A character counter gets you close in a second, which is usually enough.