What is Share of Voice in SEO (With Formula)
What is Share of Voice in SEO (With Formula)
Share of Voice (SoV) in SEO is the percentage of total possible search traffic your domain captures across a defined keyword set. Calculate it by summing (search volume × CTR at your rank) for every keyword you rank on, then dividing by the sum for the top-ranking domain across the same set.
Share of Voice measures your visibility across a keyword set. Learn the formula, how to calculate it, and what a good SoV looks like — LemRank.
Frequently asked questions
What is a good Share of Voice score in SEO?
It depends on your category density. In most niches, 15–30% puts you in the leader or challenger tier. Below 5% signals under-served presence; above 30% signals category dominance.
How is Share of Voice different from average position?
Average position treats every keyword equally regardless of traffic potential. SoV weights each ranking by its search volume and the click-through rate at that position, so it reflects actual visibility.
What CTR curve should I use for SoV?
Any consistent curve will do — the important thing is using the same curve for you and every competitor. LemRank uses one centralised curve across every module so numbers always reconcile.
Can Share of Voice go above 100%?
No. The denominator is capped at what you'd earn if you owned position 1 for every keyword, which is the ceiling.
How often should I check Share of Voice?
Weekly is enough for most SEO programs. Daily SoV is useful during algorithm updates or when you're actively deploying new content.