Keyword Difficulty
Keyword difficulty is a metric that estimates how competitive a keyword is to rank for organically, based on the authority of pages already ranking for it.
Keyword difficulty is a score, typically on a scale of 0 to 100, that estimates how hard it would be to rank in the top organic results for a given keyword, based on the strength of the pages currently holding those positions.
What Keyword Difficulty Means in Marketing
Not all keywords are equal in effort. A term with low difficulty is one where the pages currently ranking are not particularly authoritative, do not have many backlinks and may not cover the topic deeply. A site with modest authority has a realistic chance of outranking them with good content and some link acquisition.
A term with high difficulty is one where the top results are held by established, well-linked sites that are hard to displace. Competing with them requires significant domain authority, a substantial backlink profile and a page that is genuinely superior to what already exists.
Keyword difficulty is one of the three primary inputs in keyword research, alongside search volume and intent. It answers the question: given how strong your site is right now, can you realistically win this term?
How Keyword Difficulty Works
Most tools calculate keyword difficulty by analysing the backlink profiles of the pages currently ranking in the top ten results. The more authoritative those pages are, and the more links they have, the higher the difficulty score. Some tools also factor in domain authority of the ranking sites, content quality signals, and the breadth of the query.
The practical use of the score is comparative. Within a single tool, a score of 30 is easier than 60, which is easier than 80. You can use this to filter a long keyword list: set a maximum difficulty threshold based on your site’s current authority, then work from there.
The SERP check is essential alongside the score. Look at who is actually ranking. If a term scores 50 but the top results are a mix of weak pages and forum threads, the path is clearer than the number suggests. If a term scores 40 but the top results are all major publications with thousands of backlinks, the score is understating the difficulty.
Keyword Difficulty Example
A new software blog wants to rank for “project management tools”. The term scores 75 in their keyword tool, and a SERP check confirms the first page is dominated by G2, Forbes and major SaaS review sites. That is not a realistic near-term target. Instead, they target “project management tools for freelance designers”, scoring 22, where the current results are a mix of thin listicles from small blogs. They can compete there.
Why Keyword Difficulty Matters for Marketers
Keyword difficulty turns ambition into a realistic plan. Without it, teams spend months producing content for terms they have no chance of ranking for anytime soon, while missing lower-difficulty terms that could drive traffic within weeks. Match your targets to your current authority, win those terms, build the authority, then move up the difficulty scale.
Frequently Asked Questions
Is keyword difficulty the same across different tools?
No. Ahrefs, SEMrush, Moz and Google's own data calculate keyword difficulty using different formulas and different underlying data. A keyword that scores 45 in one tool might score 60 in another. The absolute number is less important than the relative comparison within the same tool: use it to rank keywords against each other in your planning, not to set a universal threshold. Always cross-check a difficulty score against the actual SERP to see what you are competing against.
What keyword difficulty is realistic for a new site?
Aim for under 20 when starting out, or any term where the current top results come from low-authority sites with few backlinks. As your domain authority grows through consistent content and link acquisition, you can move into 30 to 50 range. Targeting 70-plus terms with a new or mid-authority site is generally a poor use of resources: the effort required to rank is disproportionate to the return unless the keyword has unusually high commercial value.
Can I rank for high-difficulty keywords with great content?
Content quality is necessary but not sufficient for high-difficulty terms. The pages ranking at the top of competitive SERPs typically have both strong content and strong backlink profiles. You can rank for high-difficulty terms by building authority over time and specifically earning links from authoritative sources. Exceptional content accelerates the link acquisition, but it does not replace it. For a new site, it is better to own low-difficulty terms thoroughly than to chase high-difficulty terms prematurely.
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