What Is Keyword Difficulty and How to Assess It

What keyword difficulty means

Keyword difficulty (KD) is a score, usually from 0 to 100, that estimates how hard it will be to get a page into the top 10 for a given query. The higher the number, the stronger the pages you would have to outrank.

It is an estimate, not a measurement. No tool knows how Google or Yandex actually rank pages. Each tool builds its own model from the data it collects, mainly about the pages that already rank.

How tools calculate it

Most difficulty scores are built from signals of the current top results:

• Backlinks to the ranking pages, especially the number of unique referring domains. Some tools rely on this almost entirely.
• Authority metrics of the ranking domains, which are the tool's own scores, not search engine data.
• SERP features that push organic results down, such as ads, local packs or AI answers.
• Sometimes content signals, like how closely titles and pages match the query.

Each tool then turns these inputs into one number using its own formula.

Why the scores disagree

It is normal to see the same query rated "easy" in one tool and "hard" in another. Reasons include:

• Different link indexes. Each tool crawls its own share of the web and finds different backlinks.
• Different formulas. One weighs links, another mixes in authority and SERP layout.
• Different data freshness and regions. Results for Uzbekistan, Russia or the US can differ a lot, and smaller markets are often covered less thoroughly.
• Different search engines. Most popular tools model Google. Yandex results can look quite different for the same query.

Practical conclusion: compare scores only inside one tool, and use them to sort a list, not to make final decisions.

How to judge difficulty manually

Open the real results page for the query (in incognito mode, for the right region and language) and go through the top 10.

1. Check intent

What type of pages rank: articles, product listings, service pages, tools, videos? If the top is full of online stores and you plan a blog post, the query is effectively unwinnable for that format.

2. Look at who ranks

• Big brands, marketplaces and government sites everywhere: hard.
• Small niche sites, forums, Q&A pages, outdated articles: a real opportunity.
• Pages from sites similar in size to yours: a good sign.

3. Evaluate content quality

Open several pages. Are they thin, outdated, poorly structured, or not really answering the query? Weak content in the top is the most reliable signal that a better page can get in.

4. Check how targeted the pages are

If ranking pages do not mention the query in the title or headings, the search engine is filling the top with "close enough" results. A page made precisely for that query has a chance.

5. Look at the page layout

Count how much space ads, maps, carousels and AI answers take before the first organic result. Even an easy query brings little traffic if the organic results start far down the page.

6. Estimate links roughly

Use any backlink tool to see whether top pages have many referring domains or almost none. You do not need exact numbers, only the order of magnitude compared with your site.

A simple scoring sheet

How a young site should choose

• Start with long-tail, specific queries where the top looks weak.
• Prefer queries close to your expertise and services, so the content is genuinely better.
• Group related queries into one strong page rather than many thin ones.
• Build topical clusters: several connected pages on one subject strengthen each other over time.
• Return to harder queries once the site has links and trust.