Understanding Keyword Density
How we calculate. Keyword density % = (occurrences ÷ total words) × 100. See our methodology and accuracy policy .
Real-world scenario: A typical Keyword Density case uses keyword occurrences 18 and total words 1200. Enter the same figures below to reproduce the worked path.
What is Keyword Density?
A classic on-page SEO metric. Modern ranking systems care more about relevance and helpfulness than a fixed density target.
- Count whole-word matches for the phrase you defined
- Typical ranges often fall around 0.5–2% for primary terms—context matters
- Avoid stuffing that harms readability
The Formula
Worked Example
Common Use Cases
- Content drafts: check primary-term frequency
- Audits: spot stuffing or under-use
- Localization: compare density across languages carefully
Pro Tips
- Prefer semantic coverage over forcing repeats
- Count the exact phrase you care about
- Exclude nav/boilerplate when possible
| Scenario | When to use |
|---|---|
| Percent of a number | Finding a part of a whole (tax, tip, score) |
| Percent change | Comparing old vs new values |
Limitations: Keyword Density results are educational SEO planning aids—not guarantees of rankings or traffic. Search algorithms and attribution models vary.
Common mistakes
- Swapping part and whole: The denominator must be the full total, not a subset.
- Rounding too early: Carry extra decimal places through multi-step work before rounding the final percent.
- Mixing percent and decimal forms: Enter rates in the format the calculator labels expect.
When to use this calculator
- Use this page when your wording matches keyword density and the form labels on screen.
- Use percent of a number for “what is X% of Y?” problems.
- Use number is what percent when you know part and whole and need the percent.
Still unsure about keyword density? Start with the quick answer above, then open the linked calculator that matches your wording.
❓ Frequently Asked Questions
How do I use this keyword density calculator?
For keyword density, enter the values labeled on the form, then press Calculate. Compare the result to the worked example on this page.
What formula does this page use?
See the quick answer and formula box above for keyword density—the same percentage calculator expression is applied to your inputs.
What if my result looks wrong?
When checking keyword density, re-check part vs whole (or rate vs base), rounding, and whether percents were entered as 25 rather than 0.25 when the form expects percents.
Authoritative References
For search and analytics guidance, consult:
- Google Search Central — crawling, indexing, and ranking documentation
- W3C — web standards that affect crawlable HTML
- Google Analytics Help — engagement and traffic metrics