How to Measure Topical Authority (Without a Magic Score)

A question I get a lot from clients goes like this: “We’ve been publishing on this topic for six months. What’s our topical authority score now?”

It is a fair question. You are investing time and money, and you want a number that shows it is working. The honest answer is that there is no official topical authority score. Google doesn’t publish one, and no tool can see inside Google’s systems. But that does not mean you can’t measure progress. You can, and quite well, if you track the right proxies.

In this guide I will explain why no single score exists, then show you the practical signals I use to measure topical authority: cluster-level traffic and branded topic searches in Search Console, keyword coverage and share of voice, how fast new pages get impressions, AI visibility and topically relevant links. At the end there is a one-page scorecard you can copy, plus a realistic view of how long all this takes. If you need the background first, start with my pillar guide on what topical authority is and how to build it.

Why there is no topical authority number to look up

Let me be clear about what Google has and hasn’t said, because a lot of SEO content blurs this line.

• Google’s public guide to its ranking systems describes systems such as reliable information systems and notes that the helpful content system became part of its core ranking systems in March 2024. It does not list a topical authority score for websites.
• Google did publish a Search Central blog post in May 2023 titled “Understanding news topic authority”. That system is about news, where Google tries to surface publishers with expertise on a topic or location. It is not a score you can check, and it is not described as applying to every business website.
• Google’s helpful content guidance asks site owners questions such as whether the site has a “primary purpose or focus”. That tells us focus matters. It doesn’t give us a metric.

Ahrefs, in its guide to topical authority, discusses the 2024 Google API documentation leak and attributes names such as “site focus score” and “site radius” to it. It is also careful to say Google has never published a formal specification for topical authority. I treat leak-based ideas as direction, not proof. We don’t know how, or whether, any of those attributes are used in ranking today.

So when a tool shows you a “topical authority” number, here is what it is likely measuring:

Type of third-party score	What it usually measures	How I use it
Topical coverage or “topic score”	How many keywords in a topic you rank for, often weighted by position or search volume	Good for tracking trend and comparing competitors in the same tool
Content grade or topic completeness	How many expected terms or subtopics one page mentions, compared with top-ranking pages	A checklist for one page, not a measure of site authority
Link authority scores (DR, DA and similar)	The strength of a site’s backlink profile, regardless of topic	Context only; it doesn’t tell you about topical depth
AI visibility or AI share of voice	How often a brand appears in AI answers for a set of prompts	Useful direction; depends heavily on which prompts the tool chose

All of these are estimates built on the tool’s own data. They are useful, but different tools will give different numbers for the same site. The difference between link-based authority scores and topical authority is a topic of its own, which I cover in topical authority vs domain authority.

Defining the topic before you measure it

You can’t measure authority on a topic until you decide exactly what the topic includes. Most reporting problems I see start here. Before you track anything, write down three things:

1. The keyword set. A list of 50 to 300 keywords that belong to the topic, grouped into clusters. If you have a topical map for your website, you already have this.
2. The URL set. The pages that belong to the cluster. Ideally they share a folder, such as /espresso/, but a list of URLs works too.
3. The competitor set. Three to five sites that you actually compete with for this topic. These are often not your business competitors. A small shop might compete with magazines and forums in search.

Save these lists and don’t change them every month. If the definition keeps moving, the trend line becomes meaningless. Add new keywords as a separate, dated batch so you can compare like with like.

Signal 1: cluster-level clicks, impressions and branded searches in Search Console

This is the most reliable signal because it is Google’s own data about your site. The trick is to stop looking at the whole site and look at one topic at a time. Search Console lets you do that with regular expression (regex) filters, which are a way to match many queries or URLs with one pattern. Search Engine Land’s report on the feature notes that Search Console uses the RE2 regex syntax and that it works for both page URLs and queries.

Here is how I set up a cluster view:

1. Open the Performance report and choose Search results.
2. Set the date range to the last 3 months and turn on Compare with the previous period (or the same period last year if you are seasonal).
3. Add a Page filter, choose Custom (regex) and enter a pattern for your cluster’s URLs.
4. Note total clicks, impressions, average position and the number of pages with impressions.
5. Remove the page filter, add a Query filter with a regex for your topic terms, and note the same numbers.
6. Repeat each month and log the results in a spreadsheet.

Some example patterns for an espresso cluster:

Page filter (folder):      /espresso/
Page filter (several):     /(espresso|grinder|burr|portafilter)
Query filter (topic):      (?i)(espresso|grinder|burr|tamp|portafilter|crema)
Query filter (questions):  (?i)^(how|why|what|which|can|does|is)\b.*(espresso|grinder)

Two things to know. Regex in Search Console is case-sensitive unless you add (?i) at the start, and matching is partial by default, so espresso matches any query containing that word. If you have never used the report before, the beginner lesson on Google Search Console covers the basics. For more patterns, my guide to using regex in Search Console has a longer list.

What to look for: growing impressions for the cluster as a whole, a rising number of distinct queries, and more pages in the cluster getting impressions. A topic where 18 of 20 pages get impressions is in better shape than one where 3 pages get everything. Keep in mind that the newest data can be preliminary, as Google’s Performance report help page notes, so I don’t judge the last few days.

Branded topic searches in the same report

When people start to connect your brand with a topic, some of them search for both together. Think “[brand] espresso grinder guide” or “[brand] dial in”. Ahrefs suggests tracking growth in these branded topic searches, and treats variety in them as strong evidence.

In Search Console, add a Query filter with a regex such as:

(?i)(yourbrand|your brand|yourbrand\.com).*(espresso|grinder|coffee)|(espresso|grinder|coffee).*(yourbrand|your brand)

Small sites will see small numbers here, and that is fine. What I look at is the count of different branded topic queries each quarter, not just the clicks. Going from 3 to 25 different branded topic queries tells you that more people associate your brand with the subject.

Signal 2: keyword coverage and share of voice for the topic

Search Console only shows queries where you already appear. To see the gaps, you need a rank tracker or keyword tool and your saved keyword set. Two numbers matter here.

Keyword coverage is the share of your topic keywords where you rank in the top 10:

Coverage = keywords ranking in top 10 ÷ total keywords in the set × 100

Topical share of voice estimates how much of the available traffic for the topic you get compared with competitors. Most tools calculate it by weighting each keyword by search volume and by an expected click-through rate for your position. Ahrefs lists topical share of voice against competitors among the unbranded metrics it suggests tracking, along with the number of top 1–3 positions and new keywords entering the top 10 each month.

Worked example (hypothetical): Your espresso keyword set has 200 keywords.

Month	Top 10 rankings	Coverage	Top 3 rankings	Tool’s share of voice
Month 0 (baseline)	14	7%	2	3%
Month 3	31	15.5%	6	6%
Month 6	58	29%	15	12%
Month 9	74	37%	24	17%

The story in this example is not just “more rankings”. It is that coverage keeps growing across the whole topic, and more of those rankings move into the top 3. That pattern, broad and deepening, is what topical authority looks like in data. If only one or two pages were climbing, I would call it a page win, not a topic win.

Signal 3: how fast new pages in the cluster get impressions

This is my favorite early signal, and few people track it. The idea is simple: if search engines trust your site on a topic, new pages on that topic should start showing up faster.

For every new page in the cluster, log three dates:

• The publish date.
• The first day the page gets any impressions in Search Console (filter by that exact URL).
• The first day it reaches an average position of 20 or better for its main query.

Then compare the pages you published early in the project with the pages you published later. A hypothetical example:

Batch	Pages	Median days to first impressions	Median days to position 20 or better
Months 1–2	8	12	70
Months 3–4	8	6	38
Months 5–6	8	3	21

I use the median rather than the average because one slow page can pull an average way up. If later pages consistently get picked up and climb faster, that is a strong sign the cluster is working. It is not proof, because other things change too (more internal links, more backlinks, an update), but it is a very practical sign.

Signal 4: AI visibility for your topic prompts

AI assistants have become a second place where topical authority shows. Ahrefs lists growth in AI visibility for core topics as one of its three main measures. There are three ways to track it, from free to paid.

A fixed prompt set. Write 20 to 50 prompts that a real customer might ask about your topic, mixing basic questions and buying questions. Each month, run them in the assistants your customers use and record whether your brand is mentioned, whether your site is cited, and which page. Keep the prompts the same so the trend is fair. AI answers vary from run to run, so I read this as direction, not a precise score. My guide to share of voice in AI answers shows how to calculate the percentage.

Bing Webmaster Tools. Bing now has an AI Performance report showing citations in Copilot, Bing’s AI summaries and some partners. According to Practical Ecommerce, its grounding queries now include intent, topic and “citation share”, though there is no click data. The writer, Ann Smarty, sums it up:

“Bing is the first platform to offer some transparency.”

— Practical Ecommerce, Bing’s Improved AI Performance Section

Google Search Console. Google says sites appearing in AI features such as AI Overviews and AI Mode “are included in the overall search traffic in Search Console”, under the Web search type. You can’t separate them, but cluster-level impressions (Signal 1) already include them. Google also notes that these features may use query fan-out across subtopics. A complete cluster has more pages that can match those sub-searches. I explain that link in topical authority in AI search.

Signal 5: links and mentions from sites in your topic

A link from a respected coffee magazine says more about your espresso authority than a link from a general business directory. So when I report on topical authority, I don’t just count new referring domains. I sort them:

• Same topic: sites mainly about your subject (coffee blogs, barista training sites, coffee trade press).
• Adjacent topic: sites whose audience overlaps (kitchen, food, home appliances).
• Unrelated: everything else.

The share of same-topic and adjacent links over time is a useful number, as is the count of brand mentions on topical sites, with or without a link. You can see linking sites in the Search Console links report, and a backlink tool shows more detail. Why topical relevance matters more than raw link metrics is covered in depth in topically relevant backlinks.

A one-page topical authority scorecard

Put the signals together and you get a simple monthly report. Here is the layout I suggest. Fill in the baseline before you start, then add a column each month.

Signal	Metric	Where it comes from	Healthy direction
Cluster traffic	Clicks, impressions, distinct queries, pages with impressions	Search Console with regex filters	Rising across most pages, not just one
Coverage	% of topic keywords in top 10; count in top 3	Rank tracker with your saved keyword set	Steady growth; more top 3 positions
Share of voice	Your estimated share of topic traffic vs competitors	Keyword or rank tracking tool	Closing the gap with the leader
Speed of new pages	Median days to first impressions and to position 20	Search Console, per URL	Getting shorter for later batches
Branded topic searches	Count of distinct brand + topic queries	Search Console query regex	More variety each quarter
AI visibility	% of topic prompts mentioning or citing you; Bing citations	Prompt log; Bing Webmaster Tools	Rising mention and citation rate
Topical links	New same-topic and adjacent referring domains; mentions	Backlink tool; Search Console links	Growing share from relevant sites

Don’t combine these into one invented “score”. If you do, a strong month in one area can hide a problem in another. Read them together: when four or five signals move the right way for a few months, you can be fairly confident the topic is getting stronger.

How long before the numbers should move

There is no official timeline. Google’s SEO Starter Guide puts the uncertainty plainly:

“Some changes might take effect in a few hours, others could take several months.”

— Google Search Central, SEO Starter Guide

Ahrefs, in its topical authority guide, suggests expecting 6 to 12 months before significant movement, with coverage built in months 1 to 3, early ranking gains in months 4 to 6 and compounding gains after that. Its separate study, How Long Does It Take to Rank in Google? (updated in 2025), found that only 1.74% of newly published pages in its sample reached the top 10 within a year, and that the average number one page was 5 years old. That is a sobering reminder that rankings for competitive terms take time.

Here is how I set expectations with clients:

• First 1–3 months: look at Signal 1 (impressions and distinct queries) and Signal 3 (speed of indexing and first impressions).
• Months 4–6: coverage and top 10 rankings should start to climb for long-tail keywords.
• Months 6–12: share of voice, top 3 positions, branded topic searches and AI mentions become meaningful.

A new site will usually move slower than an established one. If that is your situation, read my guide to building topical authority on a new or small website for a more realistic pace.

Questions about measuring topical authority

Does Google have a topical authority score?

Google has not published any topical authority score for websites, and you can’t see one anywhere. Google did describe a “topic authority” system for news in a May 2023 Search Central blog post, but that is about news publishers and topics, not a number you can check. Anything labeled a topical authority score comes from a third-party tool and is an estimate.

What is the single best metric for topical authority?

If I had to pick one, it would be the share of your target topic’s keywords where you rank in the top 10, tracked over time. But one number can mislead you. Pair it with cluster-level clicks from Search Console so you know the rankings are bringing real visitors.

How long does it take to see topical authority in the data?

Ahrefs suggests expecting 6 to 12 months before significant movement. Early signs, like new pages getting impressions faster, can appear sooner. Google itself says some changes take effect in hours and others take several months, so measure monthly and judge trends over quarters.

Can I measure topical authority in AI assistants?

Partly. You can run a fixed set of topic prompts each month and record whether your brand is mentioned or cited. Bing Webmaster Tools also has an AI Performance report showing citations in Copilot and Bing AI summaries. Google includes AI Overviews and AI Mode traffic inside the normal Web data in Search Console, without a separate filter.

Are third-party topical authority scores useless?

No, they are useful for comparing yourself with competitors inside the same tool. Just don’t treat them as Google’s view of your site, and don’t compare scores from different tools, because each one is calculated differently.

Setting up your first topical authority report this month

In brief: there is no magic score, but there is plenty you can measure. Define your topic, save the keyword, URL and competitor lists, and set up regex views in Search Console. Then track coverage, the speed of new pages, branded topic searches, AI visibility and topical links each month. Read the signals together, and judge them over quarters, not weeks.

If you start today, the most useful thing you can do is record a baseline. Six months from now, that baseline is what turns “I think it’s working” into a clear answer. For the basics of reading the report, my guide to the Search Console Performance report is a good companion.

If you would like us to set up this tracking for you, or to build the cluster that it measures, have a look at our SEO services or get a quote. We are happy to look at your topic and tell you honestly where you stand.

Our complete topical authority guide series

This article is part of a series. Start with the main guide, then read the parts you need:

1. Topical Authority: What It Is and How to Build It Step by Step
2. How to Create a Topical Map for Your Website (With a Free Template Layout)
3. How to Measure Topical Authority (Without a Magic Score) (you are here)
4. Building Topical Authority on a New or Small Website
5. Topical Authority vs Domain Authority: What's the Difference?
6. Topical Authority in AI Search: Why LLMs Favor Focused Brands
7. Content Depth vs Breadth: What to Publish First to Build Authority
8. Internal Linking for Topic Clusters: Rules That Build Topical Authority
9. Topically Relevant Backlinks: Why Link Context Matters More Than Metrics
10. Does Off-Topic Content Hurt SEO? When to Publish Outside Your Niche

Sources for measuring topical authority

1. Topical Authority: What It Is, How Google Measures It, and How to Build It (Ahrefs)
2. How Long Does It Take to Rank in Google? And How Old Are Top Ranking Pages? (Ahrefs)
3. A guide to Google Search ranking systems (Google Search Central)
4. Understanding news topic authority (Google Search Central Blog, May 2023)
5. Creating helpful, reliable, people-first content (Google Search Central)
6. AI features and your website (Google Search Central)
7. SEO Starter Guide (Google Search Central)
8. Performance report (Search results): Overview and basic setup (Search Console Help)
9. Regular expression filter support coming to Google Search Console performance reports (Search Engine Land)
10. Bing’s Improved AI Performance Section (Practical Ecommerce, June 2026)