BYTETOOLS

Share of Voice Calculator

Calculate share of voice across any competitor set — mentions, impressions, ad spend or followers — with a bar chart, the gap to the leader and a concentration index.

Your brand and every competitor in the category

8,400
Category total
21.90%
Your share of voice
Competitor A
Category leader
16.2 pts
Gap to leader

Share of voice by brand

Breakdown

BrandmentionsSOV
My brand1,84021.9%
Competitor A3,20038.1%
Competitor B2,45029.2%
Competitor C91010.8%

Reading the result

Absolute gap to leader
1,360
Brands compared
4
Concentration (HHI, 0–10,000)
2,899

Share of voice = your metric ÷ the total across every brand you listed × 100. It is only as honest as your competitor set — leaving a big rival out inflates your own share. When the total is zero every percentage shows —.

What is the Share of Voice Calculator?

A share of voice calculator that divides your brand's metric by the total across every competitor you list, showing each brand's percentage, the gap to the category leader and a proportional bar chart.

  • Works with any metric — mentions, impressions, spend, followers or engagements
  • Canvas bar chart with a labelled 0–100% axis and your brand highlighted
  • Gap to the leader in both percentage points and absolute units
  • Herfindahl–Hirschman concentration index for how contested the category is
  • Add or remove competitors freely; your brand is tracked by row, not position
  • A zero total shows dashes rather than a misleading zero percent

How to use the Share of Voice Calculator

  1. 1

    Choose the metric you are comparing — mentions, impressions, ad spend, followers or engagements.

  2. 2

    Fill in one row per brand with its name and value, adding competitors as needed.

  3. 3

    Use the selector to mark which row is your own brand; it is highlighted in the chart and table.

  4. 4

    Read your share of voice, the category leader and the gap, then check the bar chart and breakdown table.

About the Share of Voice Calculator

Share of voice is a simple ratio — your brand's metric divided by the total for the whole category — but it is only as honest as the competitor list behind it. This calculator makes that list explicit: add every rival that matters, pick the metric you are comparing, and mark which row is yours.

You get each brand's percentage, the gap to the category leader in percentage points and in absolute terms, and a horizontal bar chart drawn on a canvas with a labelled 0–100% axis so the comparison is legible at a glance. A Herfindahl–Hirschman concentration index tells you whether the category is a genuine contest or one brand's monologue.

The metric can be brand mentions, impressions, ad spend, followers or engagements — the arithmetic is identical, only the label changes. When the total is zero every percentage shows a dash rather than a misleading 0%. Everything runs locally in your browser and no data is uploaded.

Frequently asked questions

How do you calculate share of voice?

Divide your brand's metric by the total of that metric across every brand in the category, then multiply by 100. If your brand has 1,840 mentions out of 8,400 across four brands, your share of voice is 21.9%.

What is a good share of voice percentage?

It depends on how many brands compete. In a four-brand category an even split is 25%, so anything above that means you are outperforming. The useful comparison is against the leader and against your own trend, not a universal target.

What is the difference between share of voice and share of market?

Share of voice measures attention — mentions, impressions or ad spend. Share of market measures revenue or units sold. The gap between them is watched closely, because sustained share of voice above share of market is generally associated with future growth.

Which competitors should I include?

Include every brand a customer would genuinely consider instead of you. Leaving a big rival out shrinks the denominator and inflates your own share, which is the easiest way to make a share of voice number meaningless.

What does the concentration index tell me?

It is the sum of every brand's squared share. A figure near 10,000 means one brand owns essentially the whole conversation, while a low figure means attention is spread across many brands and there is more room to gain ground.

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