Keyword Density Calculator
Calculate keyword density and check it against natural-language norms.
About Keyword Density Calculator
Keyword density is a diagnostic rather than a target. Modern search engines use semantic matching, so anything above about 3 per cent reads as manipulation without improving relevance. Writing naturally about a topic produces appropriate density automatically; optimising the number directly is what produces unreadable copy.
Formula
Keyword Density
Density = keyword words ÷ total words × 100
- natural range
- Roughly 0.5 to 2 per cent for a primary term
Worked example
With the default values below, Keyword Density Calculator returns Keyword Density of 2.3333%. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Times the keyword appearsminimum 0
- 14
- Total words in the contentminimum 1
- 1,200
- Words in the keyword phraseaccepts 1–10
- 2
Results
- Keyword Density
- 2.3333%
- Ideal Occurrence Count, Lower End
- 3
- Ideal Occurrence Count, Upper End
- 12
- Words Occupied by the Keyword
- 28
- Verdict
- Within the natural range
Step by step
- 1Values used
- 2Keyword Density
- 3Keyword Density= 2.3333
- 4Ideal Occurrence Count, Lower End= 3
- 5Ideal Occurrence Count, Upper End= 12
- 6Words Occupied by the Keyword= 28
- 7Verdict= Within the natural range
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Keyword Density calculated?
Density = keyword words ÷ total words × 100 Keyword density is a diagnostic rather than a target. Modern search engines use semantic matching, so anything above about 3 per cent reads as manipulation without improving relevance.
Why does Keyword Density matter?
Writing naturally about a topic produces appropriate density automatically; optimising the number directly is what produces unreadable copy.
What values do I need to enter?
This calculator takes 3 inputs: Times the keyword appears, Total words in the content, Words in the keyword phrase. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.