---
title: "Keyword density: what it measures and what a healthy range looks like"
description: "How keyword density is calculated, why the 'ideal percentage' advice is mostly folklore, and how to use density as a diagnostic rather than a target."
canonical_url: https://wordcounter4u.com/blog/keyword-density-guide
date_published: 2026-06-09
date_modified: 2026-09-06
author: "The WordCounter4U Team"
section: "SEO"
reading_minutes: 4
license: Free to quote with attribution and a link to canonical_url.
---

# Keyword density: what it measures and what a healthy range looks like

[Keyword density](https://wordcounter4u.com/word-counter) is the share of your text made up of a given word or phrase. Say a term appears 12 times in a 900-word article: that is 12 divided by 900, or 1.3 per cent. The arithmetic is trivial. What people get wrong is what to do with the number.

## The formula

> density = (occurrences of the term ÷ total words) × 100

For multi-word phrases there is a subtlety: a three-word phrase occupies three of your words each time it appears, so some tools multiply the numerator by the phrase length. Whichever convention a tool uses, comparing two pages measured the same way is fine; comparing across tools is not.

## What a healthy range looks like

There is no threshold that search engines reward. What exists is a range that naturally-written text tends to fall into, and edges outside it that signal a problem:

| Density | What it usually means |
| --- | --- |
| Under 0.3% | The page may not clearly be about the topic at all — often a sign of vague, abstract writing. |
| 0.5%–2% | Where most well-written, on-topic pages land without anyone trying. |
| 2%–4% | Noticeably repetitive. Read it aloud; you will hear it. |
| Over 4% | Reads as stuffed. Real readers notice before any algorithm does. |

> **Density is a symptom, not a lever**
>
> Nobody has ever improved a page by editing it to hit 1.8 per cent. But a density of 6 per cent reliably tells you the writing is repetitive, and 0.1 per cent tells you the topic is never actually named. Use it as a diagnostic.

## Why the 'ideal percentage' advice persists

In the late 1990s, search engines really did weight raw term frequency, and stuffing worked. Everything since — TF-IDF weighting, then semantic embeddings — has moved ranking away from [counting words](https://wordcounter4u.com/word-counter) toward modelling meaning. A page can rank for a phrase it never uses verbatim, and a page repeating a phrase 40 times can rank for nothing at all.

## What to look at instead

- Coverage: do you address the sub-questions a reader would have? Missing sub-topics hurt more than missing keywords.
- Distribution: a term appearing 12 times in one paragraph and nowhere else suggests the article is only briefly on-topic.
- Natural variants: singulars, plurals, synonyms and related concepts. Writing that only ever uses one exact phrase reads mechanically.
- The obvious places: title, opening paragraph, one or two subheadings. Not because of a rule, but because that is where a reader checks they are in the right place.
- Stop words: 'the' will always top a raw frequency list. Any useful density report filters them out.

## A practical workflow

1. Write the piece without thinking about density at all.
2. Run a density check and read the top 15 terms. Ignore the percentages at first.
3. Ask: does this list describe the article? If a stranger read only these terms, would they guess the topic?
4. If the answer is no, the problem is focus, not frequency — the fix is structural.
5. If one term is above 3–4 per cent, replace half its occurrences with pronouns or variants and re-read for rhythm.

Done this way, density stops being a score to chase and becomes what it is actually good at: a quick, honest summary of what your text talks about most.

---

Source: [Keyword density: what it measures and what a healthy range looks like](https://wordcounter4u.com/blog/keyword-density-guide) — published 9 June 2026.