Keyword Density Checker
Paste your content and instantly see keyword frequency and density percentages. Identify over-optimised or under-used keywords before publishing.
What is Keyword Density Checker?
Keyword density measures how often a keyword or phrase appears in your content relative to the total word count. It's a quick sanity-check to ensure your content is topically relevant without crossing into keyword stuffing territory.
Most SEO practitioners aim for a density of 1–3% for primary keywords. Anything above 4–5% starts to look unnatural and may trigger over-optimisation penalties from search engines.
This tool analyses single words, two-word phrases (bigrams), and three-word phrases (trigrams) — giving you a complete picture of how your content reads from an algorithmic perspective.
How to use
Frequently asked questions
There is no magic number, but 1–3% is a common guideline for primary keywords. Natural, reader-focused writing tends to land in this range automatically.
Directly, less so than in the early 2000s. Modern search engines use semantic analysis, but a very high density can still trigger spam filters, and very low density may signal weak topical relevance.
Bigrams are two-word phrases (e.g. 'keyword density') and trigrams are three-word phrases (e.g. 'keyword density checker'). Analysing these helps spot over-used long-tail phrases.
Stop words (a, the, is, and, etc.) are excluded from the results by default so you can focus on meaningful keywords. Toggle them on with the 'Include stop words' option.