Share of Voice Calculator

The share of voice formula is one division. Brandwatch's glossary writes it as SOV = (your brand's metric ÷ total market metric) × 100 and notes that the formula stays the same across channels while the inputs change.

What goes into the rows depends on the channel you measure share in:

• Social media SOV: brand mentions and tags in social media conversations on social media platforms such as Instagram, X and LinkedIn, exported from the share of voice tools inside the social listening tools that track mentions.
• PR and media: articles in news outlets and traditional media, counted by media monitoring tools.
• PPC share: ad impressions, or impression share from Google Ads, which Google defines as impressions ÷ total eligible impressions.
• SEO share: estimated clicks or a visibility score across a fixed keyword set.
• Ad spend: Nielsen describes share of voice as a brand's percentage of all media expenditures in its category.

Excess share of voice is your share of voice minus your market share, in percentage points. The 0.05 multiplier comes from Les Binet and Peter Field: Nielsen's March 2025 explainer reports that across 171 campaigns run from 1980 to 2010, a brand's share of market typically gained 0.5% for every 10 points of ESOV. The calculator reads that as 0.5 points per 10 and labels the output an indicated change, an average across categories.

The defaults are an example month of social mentions for five made-up brands. Your brand logs 420 mentions and four competitors log 910, 640, 280 and 150, for 2,400 in total.

• Your brand's share: 420 ÷ 2,400 × 100 = 17.5%, ranked #3 of 5.
• The leader: Competitor A at 910 ÷ 2,400 = 37.9%, a gap of 20.4 points.
• ESOV at 15% of sales: 17.5 − 15 = +2.5 points, an indicated gain of 2.5 × 0.05 = 0.125 points of share.

Competitor A holds the lion's share of the conversation, yet the comparison that drives growth is your own sales share. Lifting ESOV to 5 points takes a 20% share of voice: 495 mentions against the same 1,980 competitor mentions, 75 more a month. That's a clear picture of the target.

Volume counts every mention the same. A product recall that floods the press lifts share of voice exactly like a launch does, so run sentiment analysis on the same voice data: brand sentiment, the split of positive and negative online mentions, shows if the conversation helps brand reputation or hurts it.

The total is only as wide as the tool's coverage. Two specialized tools tracking a particular brand return different totals, since each indexes its own sites, forums and social media accounts.

Keep one source and one date range per comparison, then run one calculation for each of the different marketing channels and set the social media share, organic search share and paid figures side by side for a complete picture across multiple channels.

Share of voice also stops at visibility. It won't show audience demographics, organic traffic or revenue growth, so it belongs in a marketing strategy next to market research and sales data; Nielsen notes the ESOV effect varies by channel, category and brand size. PR teams add message pull through, the share of coverage carrying the brand values they briefed, because brand perception and business outcomes need their own measures.

Share of voice = your brand's metric ÷ the total market metric × 100. With 300 mentions in a market of 1,200, that's 300 ÷ 1,200 × 100 = 25%. The same division works for impressions, clicks or ad spend, as long as every brand's figure comes from one source.

To measure share in search, fix a set of relevant keywords your target audience searches, track every competitor's rankings on those same keywords, and divide your estimated clicks by the total for all tracked domains. Ahrefs reports this as share of voice in its rank tracker.

Our SEO visibility score report covers how Semrush, Moz and Sistrix weight positions when measuring SEO share, and tracking SEO share monthly beats checking website traffic alone, because traffic can't see competitors.

Add the impression share columns to the campaign or keyword view in your Google Ads account. That figure is your impressions divided by the impressions you were eligible for, so it reads as paid share of voice against the whole auction; the Auction insights report adds competitors' impression share on the keywords you bid on.

Any share above your market share. A brand with 10% of sales and 15% of voice runs +5 points of ESOV, which Binet and Field's rate ties to about 0.25 points of market share growth. A brand holding 30% of sales on 25% of voice is underfunding its position, and industry leaders sitting on negative ESOV are where challengers find room.

50% share of voice means your brand accounts for half of every counted mention, impression or click in the defined market, as much as all competitors combined. 100% means no competitor registered at all, which usually means the keyword set or the market definition is too narrow to be a useful voice analysis.

Share of market counts sales; share of voice counts visibility in the market conversation. The market share calculator works out the first by revenue or units, and the gap between the two numbers is ESOV.

Sprout Social calls social media channels the fastest, most controllable route for share of voice growth, ahead of SEO, PPC and media coverage, and recommends an employee advocacy program, with staff sharing brand posts from their own accounts.

Tracking mentions in real time lets you join industry conversations while the latest industry news and industry trends are still live, and paid advertising fills the gap where organic reach stalls.

Keep an eye on which marketing campaigns moved your share of voice in the next period's report. Talk is cheap until the number moves; a quarterly rerun on the same sources turns the reading into an actionable strategy for various marketing channels.

Drop this on any page and it renders the calculator above, live, no login or install required. It's free to use; the only ask is leaving the credit link in place.