Share of Voice Calculator
Measures the percentage of total industry or category mentions that belong to your brand, revealing your competitive visibility. Use it for social listening, PR, and SEO benchmarking.
About this calculator
Share of Voice (SOV) quantifies how much of a given conversation, search landscape, or advertising space your brand occupies relative to all competitors combined. The formula is: SOV (%) = (Brand Mentions / Total Category Mentions) × 100. A higher SOV generally correlates with stronger brand awareness and, over time, greater market share—a relationship documented in the 'Excess Share of Voice' (eSOV) framework used by marketers to predict growth. SOV can be measured across different channels: paid search impression share, social media mentions, earned media coverage, or SEO keyword visibility. Each channel uses the same core formula but different data sources, so it is important to define your measurement scope before comparing results over time or against competitors.
How to use
Suppose a social listening tool shows that across all mentions of your product category in the past month, your brand was mentioned 4,200 times and the total across all competing brands was 21,000 mentions. Enter 4,200 in 'Your Brand Mentions' and 21,000 in 'Total Category Mentions'. The calculator computes: (4,200 / 21,000) × 100 = 20%. This means your brand holds a 20% share of the category conversation. If your actual market share is 15%, your SOV exceeds market share—a positive signal that brand visibility may drive future market share growth.
Frequently asked questions
What is the difference between share of voice and share of market?
Share of market measures your actual sales or revenue as a proportion of total category sales, while share of voice measures your brand's presence in conversations, advertising, or search results relative to competitors. The two metrics are related: research by Nielsen and others shows that brands with a share of voice consistently above their share of market tend to grow over time—a concept known as Excess Share of Voice (eSOV). SOV is therefore a leading indicator that can predict future market share shifts before they appear in revenue data.
How do I measure share of voice for SEO and organic search?
For organic search, SOV is typically calculated as the percentage of total impressions or clicks your domain captures across a defined set of target keywords, compared to all competing domains. Tools like Semrush, Ahrefs, and Google Search Console can export keyword-level visibility data. You sum your impressions across all tracked keywords and divide by the total impressions across all ranking domains for those same keywords. This gives you a keyword-weighted SOV that reflects how visible you are in the searches that matter most to your business.
Why should I track share of voice instead of just my own mention volume?
Tracking only your own mention volume tells you whether your absolute visibility is growing, but it cannot tell you whether you are keeping pace with the market. If your mentions grow 20% but the overall category grows 40%, your competitive position has actually weakened. SOV contextualizes your performance against the total opportunity and against competitors simultaneously. This makes it a much more actionable metric for budget allocation, content strategy, and PR campaigns, because it shows whether your efforts are outpacing or lagging behind the competitive landscape.