How to Measure Share of Voice in Marketing (With Formulas)
Arnav Jalan
marketing
If you want to know how visible your brand is compared to competitors, share of voice is the metric to track. It tells you what portion of the total conversation, search visibility, or advertising presence in your market belongs to you — and it is one of the few marketing metrics with a well-documented relationship to future market share. This guide covers what share of voice is, the formula behind it, how to measure it across every major channel, and how to use it to guide strategy.
What Is Share of Voice?
Share of voice (SOV) is the percentage of the total visibility in your market that your brand owns. Originally, the term referred to advertising: a brand's share of voice was its share of total ad spend or ad exposure in a category. Today the definition has broadened. Marketers now measure share of voice across organic search, social media conversations, PR coverage, and paid advertising — anywhere brands compete for attention.
Put simply, if people in your market are seeing, mentioning, or reading about brands one hundred times, share of voice asks: how many of those hundred moments belong to you?
The Share of Voice Formula
The core formula is the same regardless of channel:
Share of Voice = (Your brand's mentions or visibility ÷ Total market mentions or visibility) × 100
The numerator is your brand's measure of presence — mentions, impressions, visibility score, or coverage. The denominator is the total for the market you compete in, which usually means your brand plus a defined set of competitors. Multiply by 100 to express it as a percentage.
For example, if your brand was mentioned 250 times last month and your tracked competitor set (including you) was mentioned 1,000 times in total, your share of voice is 250 ÷ 1,000 × 100 = 25%.
The formula is simple. The work is in choosing what to count and which competitors to include — and then counting it consistently over time.
How to Measure Share of Voice by Channel
Organic Search
Search share of voice measures how much of the organic visibility for your target keywords belongs to your site. SEO platforms such as Semrush and Ahrefs calculate this by taking a keyword set, checking who ranks for each keyword, weighting positions by estimated click-through or search volume, and expressing your visibility as a percentage of the total.
To measure it: define a keyword list that represents your category (not just your branded terms), add your main competitors, and track the visibility percentage over time. Rising search SOV means you are capturing a growing portion of the demand that already exists in your market.
Paid Advertising
In paid channels, the closest native metric is impression share. Google Ads reports impression share as the impressions your ads received divided by the total impressions your ads were eligible to receive. It also reports where you lost impression share — to budget or to ad rank — which tells you whether the fix is more spend or better ads.
Impression share is a within-auction view rather than a full-market view, but tracked alongside competitor activity it is the standard way to quantify paid share of voice on search and shopping campaigns. Other ad platforms offer similar competitive metrics, such as auction insights reports that show overlap with competing advertisers.
Social Media
Social share of voice compares how often your brand is mentioned on social platforms against mentions of competitors. Social listening tools such as Brandwatch, Sprout Social, and Mention track brand names, product names, hashtags, and common misspellings across platforms, then report each brand's percentage of the total conversation.
Two refinements make social SOV more useful. First, segment by sentiment — a large share of voice driven by complaints is not a win, so track positive and neutral mentions separately from negative ones. Second, weight by reach where your tool allows it, since a mention from an account with a large audience contributes more actual visibility than one from a small account.
PR and Earned Media
Media share of voice measures your portion of press coverage in your category. Media monitoring tools track articles, broadcast mentions, and podcast references for you and your competitors. The same formula applies: your coverage divided by total category coverage. Many teams also weight by publication authority or estimated readership, so a feature in a major industry outlet counts for more than a syndicated blurb.
Step-by-Step: Measuring Your Share of Voice
Define your competitive set. Choose three to ten competitors that genuinely compete for the same audience. Your SOV number is only meaningful relative to the set you choose, so document it and keep it stable.
Choose your channels and metrics. Decide which channels matter for your business — search visibility, social mentions, impression share, media coverage — and pick one primary metric per channel.
Set up tracking. Configure your SEO platform with your keyword list and competitor domains, your social listening tool with brand queries for every tracked brand, and pull impression share from your ad accounts.
Establish a baseline. Measure at least one full month before drawing conclusions, since single-week numbers swing with news cycles and campaigns.
Apply the formula. For each channel, divide your brand's number by the total across the competitive set and multiply by 100.
Track the trend, not the snapshot. Review monthly or quarterly. The direction of your share of voice — and which competitor is gaining when you lose — is more actionable than any single reading.
Connect it to activity. Annotate your tracking with campaign launches, product releases, and PR pushes so you can see what actually moves the number.
Tools for Measuring Share of Voice
Tools fall into three broad categories:
Social listening platforms — Brandwatch, Sprout Social, Mention, and similar tools track brand mentions across social networks, forums, and the open web, and report share of voice among a defined brand set.
SEO platforms — Semrush, Ahrefs, and comparable tools calculate organic visibility and search share of voice for a keyword portfolio against competitor domains.
Ad platform reports — Google Ads impression share and auction insights give you paid share of voice directly from the platform, with breakdowns of where share is being lost.
Most teams combine one tool from each category rather than looking for a single tool that covers everything, because each channel's data lives in a different system.
Share of Voice vs. Share of Market — and Why ESOV Matters
Share of market is the percentage of category sales you win. Share of voice is the percentage of category visibility you win. The relationship between the two is one of the most cited findings in advertising effectiveness research: brands whose share of voice exceeds their share of market tend to grow, while brands whose share of voice falls below their share of market tend to shrink.
The gap between the two is called excess share of voice (ESOV). The principle, popularised by researchers studying long-term advertising effects, is that voice leads market: sustained over-investment in visibility relative to your current size is associated with future market-share growth. This makes share of voice a leading indicator — a reason to treat it as a strategic planning metric rather than a vanity number. A challenger brand that matches the category leader's visibility is, in effect, buying future growth; a leader that lets its voice shrink to match its size is coasting on past momentum.
Where Newsletters and Owned Audiences Fit
Share of voice measures visibility on rented and earned channels — search results, social feeds, press coverage — where you compete for every impression. An owned audience changes that equation. A newsletter list is a channel where your share of voice is effectively 100%: every send reaches people who chose to hear from you, without an auction or an algorithm in between.
Owned audiences also feed back into measured SOV. Newsletter content gets shared and cited, subscribers mention your brand in their own channels, and consistent publishing builds the search authority that lifts organic visibility. For brands that cannot outspend larger competitors in paid channels, building an owned audience is often the most durable way to grow total visibility — you compound an asset instead of renting reach month after month.
Frequently Asked Questions
What is a good share of voice?
There is no universal benchmark — it depends entirely on your competitive set and your goals. The most useful reference point is your own share of market: if your share of voice is above it, you are positioned for growth; if below it, you are at risk of losing ground. Beyond that, focus on trend direction against a stable competitor set.
How often should I measure share of voice?
Monthly is a practical cadence for most teams, with quarterly reviews for strategic decisions. Daily fluctuations are mostly noise driven by news cycles and campaign timing.
Is share of voice the same as brand awareness?
No. Brand awareness measures whether your audience recognises or recalls your brand, typically via surveys. Share of voice measures your portion of market visibility. They are related — sustained share of voice tends to build awareness — but they are measured differently and can diverge.
Can small brands compete on share of voice?
Yes, especially by narrowing the frame. A small brand rarely wins overall category SOV, but it can dominate share of voice for a specific niche, keyword cluster, or community — and owned channels like newsletters let it reach its audience without competing in open auctions at all.
Does share of voice include negative mentions?
By default, yes — most tools count all mentions. That is why sentiment segmentation matters. Track positive and neutral share of voice separately so a PR crisis does not read as a visibility win.
Grow the Channel Where Your Voice Is Loudest
Measuring share of voice tells you where you stand; building an owned audience is how you change the number durably. Inagiffy is a newsletter-as-a-service agency that designs, writes, and operates newsletters end to end, sending over 500 million emails a year for brands that want a direct line to their audience. If you want a channel where your share of voice is total — and one that lifts your visibility everywhere else — talk to the team at inagiffy.news.