Share of Voice
Share of voice is your brand's share of all conversation in a market, including AI answers. Learn the formula, what it predicts, and how to measure it.
TL;DR
Share of voice (SOV) is the percentage of all brand conversation in your market that belongs to you. Divide your mentions by total mentions across every brand in the category and multiply by 100: 300 of 2,000 mentions is a 15% share.
Why share of voice matters
Raw mention counts rise and fall with market activity. Share of voice controls for that, which is what makes it comparable quarter to quarter and against rivals.
- Growth signal: Long-running marketing research holds that brands whose share of voice exceeds their market share tend to gain share over time, which is why the gap between the two gets tracked deliberately.
- Competitive framing: A number that includes competitors in the denominator answers a question raw volume cannot: are we winning attention or just making noise.
- Campaign readout: Share moves faster than revenue, so it shows whether a launch reached the market before sales data can.
- AI shortlisting: In AI answers, share of voice approximates how often an assistant puts you on the buyer's shortlist instead of someone else.
How to calculate share of voice
Define the category
Name the competitors in the denominator explicitly. A share number without a stated competitive set means nothing and cannot be compared later.
Choose the channels
Social, press, paid impressions, organic rankings, and AI answers each produce a different share. Measure them separately before combining anything.
Count consistently
Apply the same mention rules to competitors as to yourself, including misspellings and product names, or your share is inflated by definition.
Apply the formula
Your mentions divided by total category mentions, times 100.
Weight by reach where it matters
One mention in a widely read publication is not one mention in a dead forum. Reach weighting turns a count into an attention estimate.
Track the trend
A single reading is a data point. Direction over quarters is the finding.
Share of voice vs. share of market
Share of voice: Your portion of the conversation, measured in mentions, impressions, or AI answer appearances. It moves quickly and leads.
Share of market: Your portion of actual revenue or units in the category. It moves slowly and lags. The gap between the two is the number strategists watch, since sustained excess share of voice is associated with future share gains.
AI share of voice is the version most teams cannot see yet. When a buyer asks an assistant which vendors to consider, the answer names a handful of brands, and that list is the shortlist. Findrix measures how often each of seven engines names you against named competitors across your market's prompts, with the confidence range shown under every number. Every gap comes with the fix already written: technical, content and off-site. The audit is free, takes about a minute, and requires no signup.
Metrics for share of voice
- Social share of voice: Your mentions as a percentage of category mentions across social platforms, usually the noisiest channel.
- Press share of voice: The same calculation across earned media, often weighted by publication reach.
- Paid share of voice: Your impressions or ad spend as a percentage of category totals, the original meaning of the term.
- Search share of voice: Your estimated clicks across a tracked keyword set against total available clicks.
- AI share of voice: The share of tracked AI answers naming you rather than a competitor, calculated per engine.
Where share of voice breaks down
The number is only as honest as its denominator, and denominators are where most reporting quietly cheats. Pick a flattering competitive set and your share doubles without anything changing in the market.
The problem is sharper in AI visibility tools, where the prompt set is the denominator and most tools do not tell you what it contains, which makes cross-tool comparisons meaningless.
Sentiment is the second gap: share of voice counts mentions without reading them, so a product recall can produce a share spike that looks like a marketing win on a dashboard. Read share alongside sentiment, and treat any share figure whose denominator you cannot inspect as directional at best.
Frequently asked questions
How do you calculate share of voice?
Divide your brand's mentions by the total mentions for every brand in your defined category, then multiply by 100. The formula is simple; the decisions that matter are which competitors go in the denominator and which channels you count.
What is the difference between SOV and SOM?
Share of voice is your portion of the conversation. Share of market is your portion of the revenue. SOV moves first and is treated as a leading indicator, which is why the gap between the two gets watched as a growth signal.
What does 100% share of voice mean?
Every tracked mention in the category named your brand and no competitor. In practice it signals a denominator problem: a competitive set defined too narrowly, or a channel where rivals happen to be silent. Widen the set and re-measure before celebrating.