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Free SEO tool

Keyword Density Checker

Check keyword density, find the right balance, and write SEO-friendly content. Paste your text, add keywords, and see counts, density, and highlights instantly.

Working field

Paste your text and add target keywords.

Add your text and keywords, then read the full density report in the panel on the right.

Density report

Counts, density, and highlights appear here.

Add text and keywords to see your density report here.

Best for fast keyword checks before you publish or update a page.

Free Keyword Density Checker — Optimize Content for SEO

Check how often your keywords appear and find the right balance in seconds. See counts, density, and live highlights — then fix overuse or gaps. The tool sits up top so you can check first and read guidance below. Free, fast, and no sign-up.

Instant density score

See each keyword's count and density as a clean percentage in one pass.

Multi-keyword support

Check several keywords at once with comma-separated input.

Live text highlights

Spot every keyword right in your content with inline highlighting.

No setup required

Use it right in the browser — no account, no install, no waiting.

How it works

  1. Paste your text into the editor above.
  2. Add one or more keywords, separated by commas.
  3. Read the density table and highlighted preview on the right.
  4. Adjust your content, then copy the results when you're done.

Best practices

  • Keep primary keywords at 1%–3% density.
  • Never stuff keywords — write for people first.
  • Use synonyms and related terms naturally.
  • Check density on every new or updated page.
  • Place keywords in headings and early text.
  • Re-check after edits to confirm the balance.

Frequently asked questions

What does keyword density mean?

It's the percentage of times a keyword appears in your text compared to the total word count.

Is this Keyword Density Checker free?

Yes. It's completely free — no sign-up, no limits.

How many times should a keyword appear?

Keep your primary keywords at 1% to 3% density. Too much stuffing can hurt your SEO.

Can I check more than one keyword at a time?

Yes. Add several comma-separated keywords and the tool scores them all in one pass.

How do I raise keyword density without stuffing?

Use synonyms and related LSI keywords naturally, so the content stays easy to read.

Does keyword count affect Google rankings?

Yes. Balanced keyword use helps search engines judge relevance, which can lift your rankings.

How often should I check keyword density?

Check every time you add new content or update an existing page.

Is this tool beginner-friendly?

Yes. The interface is simple and needs no technical knowledge — just paste and check.

For related SEO work, try the SEO Content Score Calculator or AI Content Generator.