Score topical authority across coverage, depth, links and engagement.
Each dimension is scored out of 100 and combined using its normalised weight, so the result stays on a 0-100 scale. The weakest dimension is surfaced separately because a good average routinely hides one failing area. A single topical authority number is what gets reported upward, but the weakest-dimension line is what tells you where the next hour of work should go.
Topical Authority
Score = Σ (dimension × weight), weights normalised to 1
Score = Σ (dimension × weight), weights normalised to 1 Each dimension is scored out of 100 and combined using its normalised weight, so the result stays on a 0-100 scale. The weakest dimension is surfaced separately because a good average routinely hides one failing area.
A single topical authority number is what gets reported upward, but the weakest-dimension line is what tells you where the next hour of work should go.
This calculator takes 5 inputs: Share of the topic cluster covered, Average content depth, Internal linking within the cluster, External links to cluster pages, Engagement on cluster pages. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.