Search4 min read
Keyword Density: There Is No Right Number, and What to Use Instead
The "1-2%" target repeated across the web has no source. Two things about a keyword are checkable - whether it is present and where it first appears - and they are what to measure.
There is no correct keyword density. No search engine publishes a target, the "1–2%" figure repeated across the web has no source behind it, and Google has said publicly for years that repeating a phrase does not help. What is worth measuring about a keyword is whether it is there at all, and where it first appears.
Where the keyword density number came from
Keyword density is a real metric with a real definition — occurrences of a phrase divided by total words — and it was genuinely useful to search engines in the 1990s, when relevance was largely a counting problem.
It stopped being useful when ranking stopped being a counting problem. What survived was the number and the folklore around it, because a percentage is easy to compute and easy to sell as a target. Google's own guidance on spam policies describes keyword stuffing as a practice to avoid rather than a threshold to stay under (Google Search Central).
So the honest position is: density is a description of a text, not a goal for one.
What is checkable instead
Two things, and they are both more useful than the percentage.
Presence. A phrase that does not appear cannot match anything. This sounds too obvious to check and is the single most common finding — a description written about a subject without ever naming it the way anyone searches for it.
Position. Every surface truncates. YouTube shows roughly the first 150 characters of a description before "…more". TikTok cuts a caption at around 90 characters and Instagram at
- A phrase appearing fourteen times starting at word 300 is, on all of those surfaces, a
phrase that does not appear.
| Surface | Shown before the fold | What the fold decides |
|---|---|---|
| YouTube description | ~150 characters | Whether a human reads it at all |
| Instagram caption | ~125 characters | Whether the caption is opened |
| TikTok caption | ~90 characters | Whether the caption is opened |
| Pinterest feed | A short opening line | Whether the Pin is clicked |
| A search snippet | ~160 characters | What the result says in the list |
FreeMentioned in this article
Keyword Density CheckerHow often the phrase appears, and — the part that matters — how early.It reports the count and the density because people ask for them, then spends the rest of the output on position: where the phrase first appears, and whether that is above the fold for the surface you picked.
The column nobody asks for
The checker also lists the terms your text is actually dense in, whether or not you asked.
That comparison is the most useful thing in the report. If the phrase you targeted is missing from the list of what the copy is genuinely about, the copy is about something else — and that is a finding no percentage would have given you. It is usually not a keyword problem at all; it is a draft that never got round to its subject.
When repetition does become a problem
Not at a threshold, but it exists.
Past roughly four per cent a phrase reads as repetition to a person long before it registers as anything to a search engine, and that is the practical cost. A reader who notices the same five words four times in a paragraph stops trusting the page, and a description that trips that reaction is worse off than one that mentions the subject once.
The other half of the same problem is sentence-level: copy written to hit a number reads as copy written to hit a number. Readability score covers what that does to a passage, and power words covers the vocabulary side.
What to do with a description instead
Four things, in order of what they are worth:
- Name the subject in the first sentence, the way somebody would search for it.
- Put it above the fold for the surface it is going to — 150 characters on YouTube,
fewer on TikTok.
- Say it once more naturally, wherever it falls.
- Stop. Placements four through fourteen do nothing that placement one did not.
For YouTube specifically, the structure that gets the first 150 characters right is in youtube description template, and the research side — finding the phrase people actually type — is in youtube keyword research.
What is a good keyword density?
There isn't one. No search engine publishes a target and the widely repeated 1-2% figure has no source. Presence and position are the checkable parts.
Is keyword density still a ranking factor?
Not as a target. Repeating a phrase does not improve ranking, and heavy repetition falls under keyword stuffing in Google's published spam policies.
Where should the keyword go in a YouTube description?
In the first 150 characters, because that is what shows before "…more". Once, early and naturally, beats six times further down.
How do I check keyword density?
Count the phrase, divide by total words - but read the first position alongside it, because that is the number that decides whether anyone sees the phrase at all.
Paste a description into the keyword density checker and read the "first at" column before the percentage.
Put it to work
Tools for the job you just read about
Free to run, most of them without an account.
FreeContent
Keyword Density Checker
How often the phrase appears, and — the part that matters — how early.
Check →1 runs
FreeContent
Jargon & Acronym Detector
The words that make sense to you and not to whoever just arrived.
Detect →
FreeContent
Sentence Rhythm Analyzer
Why a draft with nothing wrong with it still reads flat.
Analyze →
FreeContent
Crutch Phrase Finder
The phrases you use every time, which you are the last to notice.
Find →1 runs
FreeContent
Weighted Character Counter
Why your editor says 240 and the post box says 287.
Count →1 runs
FreeContent
Carousel Copy Splitter
A list, split into slides the words will actually fit on.
Split →
Keep reading
More from the blog
Search4 min read
Meta Description Length: What Google Actually Shows
Google gives a desktop snippet two lines and a phone three. The useful target is one clear promise inside about 155 characters — and Google may still use a passage instead.
Search5 min read
Title Tag Length: How Long Should a Title Be in Pixels?
A title tag is cut by width, not by character count. The desktop column is about 600 pixels — which is anywhere from 45 to 75 characters depending on the letters.
Search4 min read
YouTube Title Truncation: Where the Title Is Cut in Search, Home and the Sidebar
The 100-character limit is the number the upload form enforces. The numbers that decide whether anyone reads your title are 70, 60 and 40, and nothing mentions those.