Keyword Difficulty (KD)
A tool's estimate, usually on a scale of zero to a hundred, of how hard it is to reach the first page for a term.
Analogy Mental model
A climbing grade. Eighty is Everest. Ten is the hill behind your neighbourhood, and you can walk up it this afternoon.
In practice What you actually do
Ahrefs computes this mainly from the backlink profiles of the current top ten. Read the actual results page alongside the score, and if the top ten are all high-authority domains with hundreds of referring domains each, believe the page rather than the number.
Where people get burned Pitfalls
A low score can still be unwinnable. Some terms score under ten because nobody links to them, and the entire first page is Google's own product, flights or maps or shopping, leaving no organic slot to take.
This entry was written in English from the Chinese original, not machine-translated. Read the Chinese version →