What is Keyword Difficulty?
Keyword difficulty is a metric that estimates how hard it would be to rank on the first page of search results for a specific keyword, typically based on the authority and quality of currently ranking pages.
Keyword difficulty (KD) is a metric provided by SEO tools that estimates the competitiveness of ranking for a specific keyword. It's usually expressed as a score from 0-100, where higher scores indicate greater difficulty. Each tool calculates KD differently, so scores aren't directly comparable across platforms.
Most keyword difficulty calculations consider:
- Backlink profiles: The number and quality of backlinks pointing to currently ranking pages
- Domain authority: The overall authority of ranking domains
- Content quality: Some tools evaluate the comprehensiveness and quality of ranking content
- SERP features: The presence of featured snippets, AI Overviews, or knowledge panels that reduce organic click opportunities
Important caveats about keyword difficulty: it's a simplification of a complex reality (many factors beyond backlinks affect ranking), it doesn't account for your specific site's authority or topical strength, tools calculate it differently (an Ahrefs KD 30 is not the same as a Semrush KD 30), and it changes over time as new competitors enter and existing pages gain or lose links.
A practical approach is to combine KD with search volume and business relevance to create a prioritized keyword list. Target a mix of difficulties — quick wins (low KD) for near-term traffic and higher-difficulty keywords for long-term topical authority.
Why it matters for SEO
Keyword difficulty helps you set realistic ranking expectations and allocate resources wisely. Targeting only high-difficulty keywords with a new site leads to frustration, while targeting only easy keywords limits your traffic ceiling. Understanding difficulty helps you build a balanced strategy: establish authority with achievable keywords first, then progressively target more competitive terms as your site grows.
How Ascend helps
Ascend's content briefs provide competitive context that goes beyond a single difficulty score. By analyzing the actual content, structure, and depth of top-ranking pages, Ascend shows you exactly what it takes to compete — and where opportunities exist to create superior content. This practical, SERP-based difficulty assessment is more actionable than an abstract score.
Put this into practice
Generate an SEO brief that accounts for keyword difficulty — in under 60 seconds.
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