Keyword Density Checker

What Is Keyword Density?

Keyword density is the percentage of times a specific keyword appears in a piece of content compared to the total number of words. It is one of the foundational on-page SEO signals and still matters in 2026 — though in a more nuanced way than it did a decade ago.

The keyword density formula is straightforward:

Example: if you mention "SEO tools" 8 times in a 400-word article, the keyword density is 2% — within the healthy range.

What Is the Ideal Keyword Density for SEO in 2026?

Most SEO professionals recommend a keyword density of 1% to 3% for a primary keyword. Here is a practical breakdown:

• Under 0.5% — The keyword may not appear enough for Google to associate the page with that topic.
• 1% – 3% — The sweet spot. Signals relevance without sounding repetitive to readers or algorithms.
• 3% – 4% — Caution zone. Content starts to feel repetitive and may trigger over-optimisation signals.
• Over 4% — High risk. Google's algorithms may discount the page for keyword stuffing.

These are guidelines, not hard rules. A naturally written 2,000-word article may have a primary keyword density of 0.8% and still rank on page one — because Google weighs dozens of other relevance signals alongside raw keyword frequency.

Keyword Density vs. Keyword Frequency: What Is the Difference?

Keyword frequency is the raw count of how many times a word appears in your content. Keyword density is that count expressed as a percentage of the total word count. Both metrics matter — frequency tells you absolute usage, density tells you whether that usage is proportionate to the length of the content.

This tool shows both: the Count column shows keyword frequency, and the Density column shows the percentage. Use both together when auditing your content.

What Is Keyword Stuffing and Why Does It Hurt Rankings?

Keyword stuffing is the practice of cramming keywords into content in a way that reads unnaturally. Common examples include:

• Repeating the same phrase in every sentence
• Adding keyword lists at the bottom of a page with no context
• Hidden text loaded with keywords (invisible to users but readable by bots)
• Filling alt tags or meta keywords with dozens of exact-match repetitions

Google's Panda algorithm update and its ongoing refinements specifically target keyword-stuffed content. Pages caught by Panda see significant ranking drops and reduced visibility in search results. Use this keyword density checker to spot over-optimisation before you publish.

How to Fix High Keyword Density: Use LSI Keywords

LSI (Latent Semantic Indexing) keywords are words and phrases semantically related to your primary keyword. Instead of repeating "keyword density checker" 10 times, replace some instances with natural variations:

• keyword frequency analyser
• word density tool
• check keyword usage online
• SEO content analyser
• keyword count checker

This maintains topic relevance for Google while reducing mechanical repetition. Pair this tool with our readability checker to ensure your content scores well for both SEO and human readers, or use the word frequency counter to see a full word-by-word breakdown of your content.

How to Check Keyword Density Step by Step

1. Copy your content — Select all body text from your article. Exclude navigation, headers and footer text for accurate results.
2. Paste into the checker above — Paste your text into the content box at the top of this page.
3. Click "Check Keyword Density" — The tool filters out stop words (the, a, is, in, etc.) and calculates a density percentage for each remaining keyword.
4. Review the results — Keywords marked Good are in the 1–3% range. Keywords marked Too High should be reduced. Keywords marked Low may need more presence to signal relevance.
5. Edit and re-check — Make adjustments to your content and run the check again until your primary keywords land in the Good range.