Free tool

Free share of voice calculator, with AI share of voice

Enter your numbers and your competitors’ and see your share of voice, your rank and how far you are from the leader. It works for press, social, ads, search and AI answers.

What are you measuring?

Enter one number per brand for the same channel and period: press mentions, social mentions, ad impressions, organic clicks or AI answers that name each brand.

How to calculate share of voice

Share of voice is your part of all the attention a set of brands gets in one channel. The formula is the same everywhere:

Share of voice = your brand ÷ (your brand + your competitors) × 100

What changes is what you count. Use the same measure, channel and period for every brand, or the shares mean nothing:

  • PR and media: articles or mentions that name each brand.
  • Social: posts and comments that mention each brand.
  • Paid search and ads: impressions, from your auction insights.
  • Organic search: estimated clicks or visibility for the same keyword set.
  • AI search: answers from ChatGPT, Perplexity, Gemini or Google’s AI features that name each brand, for the same prompts.

AI share of voice: why weighting matters

In AI answers, counting mentions hides the difference that decides the sale. “We recommend Mencoro” and “other tools include Mencoro” count as one mention each, but only the first one sends a customer. That is why Mencoro weighs every mention by type: a recommendation counts 1, a comparison 0.5, a listing 0.4, an example 0.3 and a passing reference 0.2. Switch the calculator to the AI mode to see how the weighted share differs from a plain count; in Mencoro’s own tracking the tone of each mention and conditions such as “only for large teams” also adjust the weight, as explained in how Mencoro calculates share of voice .

Where to get the numbers for AI answers

Ask the same questions your customers ask and record who each answer names and how. Our AI visibility checker does it for three buyer questions on ChatGPT, Gemini and Perplexity and gives you the share of mentions against up to three competitors, and the ChatGPT rank checker does it for your own prompts. For a figure you can report month after month, the prompts have to run on a schedule: Mencoro tracks share of voice daily across ChatGPT, Perplexity and Google’s AI Overviews and AI Mode, from €15 a month.

For the concept in depth, including the difference between share of voice and share of market, see our share of voice glossary entry and our guide to AI share of voice in GEO.

FAQ

Share of voice calculator: frequently asked questions

Divide your brand’s count by the total of every brand you compare in the same channel and period, then multiply by 100. With 12 mentions against competitors with 20 and 8, your share of voice is 12 ÷ 40 × 100 = 30%.
Share of voice = your brand’s measure ÷ the total measure of all brands compared × 100. The measure depends on the channel: mentions for PR and social, impressions for paid media, clicks or visibility for organic search, and mentions in answers for AI search.
AI share of voice is your share of the brand mentions in AI answers, from ChatGPT, Perplexity, Gemini or Google’s AI Overviews, for the questions your customers ask. Because a recommendation is worth more than a passing reference, it is more useful weighted by how each answer mentions each brand, which is what the AI mode of this calculator does.
It depends on how many competitors you compare against. With five comparable brands, a fair share is 20%; above that you are winning the conversation. A share of voice above your market share tends to come before growth in market share, and one below it tends to come before a decline.
The ones your customers actually choose between, and the same set every time. Adding or removing a brand changes everybody’s share, so compare periods only with the same list of competitors.

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