Ahrefs’ Keyword Difficulty (KD) score is helpful, but it’s only one piece of the ranking puzzle. It’s calculated mostly from the number and quality of backlinks pointing to the top 10 ranking pages.
That means KD tells you how competitive the backlink landscape is — but it does not measure:
Domain authority gap (Are those pages on sites Google already trusts more than yours?)
Search intent match (Are the top results answering the query in the exact format Google prefers?)
Topical authority (Do the ranking sites have dozens of related articles that reinforce their expertise?)
Content quality and depth (Do the pages go beyond keywords to cover the topic comprehensively?)
SERP environment (Are there featured snippets, People Also Ask, videos, or local packs stealing clicks?)
Why Low KD Can Still Be Hard
Big brands dominate the SERP
Even with few backlinks, a page from Amazon, Wikipedia, or a .gov site can outrank you simply because of trust and authority.
Intent mismatch kills rankings
If Google is ranking product pages for the keyword and you publish a blog post, you’ll struggle to appear — even for KD 0 keywords.
SERP features eat traffic
You might rank #4 for a low KD term, but if the SERP has a featured snippet and multiple People Also Ask boxes, your click-through rate can tank.
Topical authority matters
Google rewards sites that cover a topic in depth. A single article targeting a keyword won’t outrank a competitor with a full content hub.
How to Evaluate “Low KD” Keywords Properly
Step 1: Manually check the top 10 results.
Step 2: Look for smaller DR (Domain Rating) sites — ideally under DR 30–40 if your site is new.
Step 3: Match the content format exactly (listicle, how-to guide, product page, etc.).
Step 4: Note any SERP features that could reduce traffic even if you rank.
Low KD in Ahrefs means low backlink competition, not low overall competition.
If the SERP is filled with big brands, high topical authority sites, or intent mismatches, the keyword will still be tough for you — even if the KD says “easy.”