What is the share of voice formula?

Share of voice = your mentions ÷ the total mentions of every brand you compare × 100. With 120 mentions against competitors’ 300 and 80, your share is 120 ÷ 500 × 100 = 24%.

Why show share per platform?

Platforms differ in volume by orders of magnitude. One blended number is mostly the loudest platform. Per-platform bars show where each brand is strong, and the overall bar weights each platform equally so none of them decides it alone.

Why does my number differ from Brand24’s?

Different sources and a different reading. Brand24’s free calculator collects across news, blogs, forums, reviews, video, podcasts and social media; this one counts four developer and news platforms over seven days with whole-word matching. Mention’s looks at 30 days. None of them is wrong; they are measuring different conversations.

Is the manual mode stored anywhere?

No. The “Your own numbers” tab calculates in your browser and sends nothing.

Why does GitHub dominate the counts?

GitHub search matches issue and pull request bodies, so a package name turns up in many changes that merely use it. That is why each platform has its own bar and the overall share weights them equally.

Share of voice calculator

Enter your brand and up to four competitors to see who owns the conversation on each of four platforms this week — or type in numbers from any source and get the percentages straight away.

Your numbersshare = brand ÷ all × 100

Your brand24.0%
Competitor A60.0%
Competitor B16.0%

Your brand: 120 ÷ 500 × 100 = 24.0%

Live counts switch on soon. Here is a real one, for three database products:

Share of voice · last 7 daysSample · 20 Oct 2026

Overall

Supabase41.4%
Neon55.0%
PlanetScale3.6%

Each platform that answered counts equally, so one loud platform cannot decide it.

Hacker News

Bluesky

GitHub

Google News

Whole-word mentions per brand and platform, last 7 days
Brand	Hacker News	Bluesky	GitHub	Google News
Supabase	13	85	139,063	3
Neon	49	61	23,429	34
PlanetScale	0 this week	19	359	1

[01] HOW THE COUNT IS MADE/ METHOD

The formula

Share of voice is one brand’s mentions divided by all the brands’ mentions, times 100. The arithmetic is the easy part; what you count, where and over what window decides whether the number means anything.

Per platform, not blended

GitHub can produce thousands of matches in a week where Hacker News produces a dozen. A blended total would just be the GitHub share. So each platform gets its own bar, and the overall bar weights each answering platform equally.

Whole words, seven days

Every brand is counted the same way on the same days: whole-word matches over the last seven. A brand with no matches shows “0 this week”, never a share made up from nothing.

Your own numbers

The second tab takes counts from anywhere — a social listening export, a press clipping tally, ad impressions — and runs entirely in your browser. Nothing you type there is sent anywhere.

[02] WHAT TO DO WITH THE NUMBER/ TRIAGE

Share of voice is a volume metric. Pair it with what was said.

A competitor that doubles its share because of an outage has not won anything. In FishOut, competitor mentions carry sentiment and labels such as Complaint and Comparison, so the share sits next to the reason. How relevance works.

r/webdevthread4h

Moving off our database host after the pricing change — what are you using?

Reply nowComparisonAsking for recommendations

Hacker Newscomment9h

Comment on: Serverless Postgres compared, one year in

Comparison

Blueskypost1d

Third outage this month from our provider

Complaint

[03] STEP BY STEP/ 4 STEPS

Pick a fair set

Compare brands that sell to the same buyer. Two to five is the useful range; past that, the small ones round to nothing.

Use names people type

Check each name with the noise checker first. A brand called after a common word will look louder than it is.

Read each platform separately

Owning Hacker News and being absent from Bluesky is a finding. The overall bar hides it.

Keep the window the same

Always compare like with like: seven days against seven days. One week is a reading, not a trend — re-run it monthly or let a monitor track it.

[04] THE SAME CHECK, EVERY HOUR/ IN THE PRODUCT

Share of voice, tracked rather than sampled

FishOut’s Insights page keeps the comparison running: mentions by keyword, competitor and platform over time, with sentiment, built from posts that passed triage — so one noisy week does not rewrite the picture.

[05] FREE TOOL, OR A MONITOR?/ COMPARED

This calculator, FishOut, or Brand24’s free calculator?

Brand24 and Mention both offer free share of voice calculators. They measure different things from this one, and the difference explains most disagreements between the numbers.

Brands compared: This free toolUp to 5FishOut FreeEvery competitor you trackBrand24 free calculator2 to 5 [source]
Signup: This free toolNoneFishOut FreeFree plan, no cardBrand24 free calculatorNo account, card or trial [source]
Sources: This free toolHN, Bluesky, GitHub, Google NewsFishOut FreeUp to ten platforms by planBrand24 free calculatorNews, blogs, forums, reviews, video, podcasts and social [source]
Split by source: This free toolYes, per platformFishOut FreeYes, over timeBrand24 free calculatorNo source, language or date filter in the free tool [source]
History: This free toolThis week onlyFishOut FreeKept from the day you startBrand24 free calculatorOne reading, current counts only [source]

This free tool, FishOut Free and Brand24 free calculator, compared
	This free tool	FishOut Free	Brand24 free calculator
Brands compared	Up to 5	Every competitor you track	2 to 5 [source]
Signup	None	Free plan, no card	No account, card or trial [source]
Sources	HN, Bluesky, GitHub, Google News	Up to ten platforms by plan	News, blogs, forums, reviews, video, podcasts and social [source]
Split by source	Yes, per platform	Yes, over time	No source, language or date filter in the free tool [source]
History	This week only	Kept from the day you start	One reading, current counts only [source]