Keyword Density Checker

There's an old SEO myth that you should repeat your keyword until the algorithm notices. On Amazon that backfires: a listing that says "water bottle water bottle water bottle" reads like spam, tanks your conversion rate, and Amazon's ranking actually rewards conversion, not repetition. This tool tells you how dense your keyword really is, so you can stay natural.

Paste your copy and one keyword. It counts exact word-boundary matches and divides by total word count. That percentage is your density.

What a healthy number looks like

I aim for a keyword to appear a few times across the whole listing — title, bullets, description — without dominating any one section. A density in the 1–4% range is normal for a phrase used where it matters. Push past 6% and you're probably repeating yourself to the point a shopper notices and loses trust.

The point isn't to hit a magic percentage. It's to catch the moment you've crossed from "uses the keyword well" into "sounds like a robot wrote it." I've edited listings where the seller repeated the main term twelve times in five bullets, thinking more equals better. It doesn't. Customers bounce.

Use it on your whole listing, not one field

Run this on the combined title, bullets, and description — not just the bullets. A keyword that appears once in the title and twice in bullets is usually enough. If you're tempted to add it a fourth time, spend that effort on a benefit or a feature instead.

Pairs with the other tools

This checker tells you the keyword is present and at what strength. The Title Length Checker confirms it's in the title where it counts most. The Search Terms Builder handles the backend field Amazon doesn't show customers but still indexes. Use all three and your keyword coverage is solid without ever tipping into spam.

Remember: Amazon ranks on sales velocity and conversion, not on how many times you can paste a word. Write for the human, verify with the tool, and move on.