How to Use Google Trends to Pick Blog Topics: A Practical Guide for Small Business Blogs
Google Trends helps you pick blog topics by showing whether interest in a topic is rising, falling, or seasonal, and how it compares with related topics, before you spend time writing about it. Use it to compare candidate topics, check timing, and confirm that real people are actually searching for the thing you plan to write about.
TL;DR / Key Takeaways
- Google Trends shows relative search interest, not absolute search counts, so use it to compare topics rather than to measure exact demand.
- Compare several candidate topics side by side before committing to one, and favour topics with steady or rising interest over one-off spikes.
- Check the trend over a long period first, then zoom into recent months to see whether interest is still alive.
- Look at regional interest and related queries to find angles and phrasing your customers actually use.
- Treat a spike with suspicion: check whether it reflects a real event, a seasonal pattern, or noise before building a post around it.
- Combine Trends with your own customer questions and your site's search data, because Trends alone cannot tell you whether a topic will bring enquiries.
What Google Trends Is, and What It Is Not
Google Trends is a free tool from Google that shows how interest in a search term changes over time and across regions. According to Google's own FAQ about Trends data, the tool provides access to a largely unfiltered sample of actual search requests made to Google, anonymised, categorised, and aggregated, displayed from global level down to city-level geography. That description matters, because it sets the limits of what the tool can tell you.
The most important limit is normalisation. Google's Trends FAQ explains that each data point is divided by the total searches for its geography and time range, and the results are scaled from 0 to 100 based on a topic's proportion of all searches. A score of 100 means the peak of interest for that term in the period you selected, not a count of searches. Two terms with the same score in different regions do not necessarily have the same total search volume, as the FAQ also notes. This is why Trends is a comparison tool, not a counting tool. If you need an estimate of how many people search for a term, you need a keyword tool that reports search volume; Trends tells you the shape of interest, not its size.
Trends is also not a poll. Google's FAQ states this directly: Trends data is not scientific polling and should not be confused with it, and a spike in a topic does not mean the topic is popular or winning, only that many users appear to be searching for it for some unspecified reason. A spike can reflect a news event, a celebrity mention, a seasonal moment, or, for low-interest queries, statistical noise that Google deliberately adds to protect privacy. The FAQ warns that one-off spikes on low-interest queries should not be interpreted as real search activity. For a small business, the practical lesson is simple: never pick a topic from a single spike. Pick topics from patterns.
Finally, Trends only shows data for terms with enough searches. The FAQ notes that search terms with low volume appear as zero. A zero in Trends does not mean nobody ever searches for the term; it means the term is below the threshold the tool reports. For very local or very niche service topics, that is common, and it is a reason to combine Trends with other evidence rather than treating a zero as a verdict.
Why Trends Matters for Topic Picking
Most small business blogs fail at topic selection, not at writing. A well-written post on a topic nobody searches for will quietly earn nothing, and a post on a topic whose interest peaked three years ago will arrive after the audience has moved on. Trends helps with both problems at low cost: it takes minutes to check a candidate topic, and it can save hours of writing on a topic with no living audience.
Trends is especially useful for three decisions. First, choosing between similar topics: should you write about "emergency plumber" or "burst pipe repair," about "wedding photography" or "elopement photography"? A side-by-side comparison shows which topic has steadier interest and which is a passing curiosity. Second, timing: some topics are seasonal, and publishing a seasonal post weeks before the peak gives it time to be discovered and indexed before demand arrives. Google's SEO Starter Guide notes that changes in search can take weeks to show effect, so timing a post ahead of its season is not just good planning, it is a practical necessity. Third, finding angles: the related queries section surfaces the phrasing people actually use around a topic, which often reveals a better, more specific post than the one you started with.
None of this replaces knowing your customers. Trends tells you what people search for; your enquiry emails, phone calls, and frequently asked questions tell you what your customers struggle with. The best topics usually sit at the overlap: a topic with living search interest and a question your customers genuinely ask. Our guide on how to choose blog topics customers actually search covers that overlap in more detail, and Trends is one of the fastest ways to test whether a customer question also has search demand behind it.
How to Use Google Trends, Step by Step
Step 1: Start with a seed list, not a single idea
Write down five to ten candidate topics before opening the tool. These should come from your services, your customer questions, and your existing keyword research. Starting with a list matters because Trends is most useful comparatively: a single term in isolation tells you little, while five terms side by side immediately show which ones have life and which are flat. Include at least one broader term and one specific term for each theme, because the comparison between them often reveals whether the audience searches broadly or specifically.
Step 2: Compare topics over a long period first
Enter your candidate terms together and look at the longest useful period first, such as the past five years. This view separates durable topics from fads. A topic with a steady baseline and gentle rises is usually a safer blog investment than a topic with one tall spike and silence elsewhere. Watch for decline as well: a topic that has fallen steadily for years may still be worth one post if your customers ask about it, but it is a poor foundation for a whole series. Note the shape, not just the latest value.
Step 3: Zoom into the recent period to check current life
After the long view, narrow the range to the past twelve months, and then to the past ninety days if the topic is time-sensitive. This answers a different question: is interest still alive right now? A topic can look healthy over five years and be quiet for the past six months, and a post built on the long view alone would miss that. Conversely, a topic that looks flat over five years may be waking up in recent months. Both views together give you the trend and the current state, and you need both before committing writing time.
Step 4: Check seasonality before you schedule
If the graph shows a regular annual pattern, note when the peak falls and plan backwards. For a seasonal topic, publish ahead of the peak so the post has time to be crawled, indexed, and found, rather than publishing at the peak when demand is already passing. If you run a content calendar, mark the seasonal peaks on it and assign the writing work to the weeks before them. Seasonal topics also make good evergreen content candidates when the underlying question repeats every year: the post can be refreshed and reused rather than rewritten.
Step 5: Read the regional breakdown
Trends shows interest by region and, for larger countries, by city or metro area. For a local service business, this is genuinely useful: a topic that is strong nationally but weak in your service area may be a poor use of your time, while a topic with concentrated regional interest near you may deserve priority. For a business that serves customers online, the regional view can suggest which markets to write for first, or which spelling and phrasing to use. Treat regional scores as relative within the tool, not as headcounts, but use the ranking of regions as a real signal about where interest sits.
Step 6: Mine related queries for angles and phrasing
The related queries section lists terms that people also search for alongside your topic, and it often contains the best post ideas on the page. A broad topic like "loft conversion" may surface specific queries about cost, planning permission, timelines, and room types, and each of those can become a focused post that answers a real question. Pay attention to the wording: related queries show how searchers phrase their questions, which is often different from how professionals phrase the same topic. Use that phrasing in your headings and introductions where it fits naturally, because it matches the language of the person you are trying to help.
Step 7: Separate rising topics from breakout noise
Trends marks some related queries as breakout, meaning their growth is unusually large. Breakout queries deserve a second look, not an automatic yes. Ask what event or season explains the growth, and whether that explanation will still hold in a few months when your post is live. A breakout driven by a news story will fade; a breakout driven by a new product, a rule change, or a lasting shift in behaviour may become a durable topic. If you cannot explain the breakout, do not build a post on it alone. Check it against your customer questions and your site's own search data first.
Step 8: Cross-check before you commit
Before writing, confirm the topic in at least one other source. Check whether your own site already ranks for related terms, whether customers have asked about it, and whether a keyword tool reports any volume for it. A topic that passes Trends and one other check is a much safer investment than a topic that passes Trends alone. This cross-check also prevents duplication: you may find you already have a post covering the topic, in which case refreshing it is usually better than writing a competing one.
Common Mistakes When Using Google Trends
| Mistake | What goes wrong | Fix |
|---|---|---|
| Reading scores as search counts | A score of 80 is treated as a volume estimate | Compare terms relatively; use a keyword tool for volume |
| Building on a single spike | Post published after a news-driven peak fades | Check the long view and explain the spike before committing |
| Ignoring low-volume zeros | Niche local topics dismissed as having no demand | Cross-check with customer questions and keyword tools |
| Checking only one time range | Long-term decline or recent revival missed | Look at five years, then twelve months, then recent weeks |
| Copying related queries blindly | Posts chase breakout noise with no lasting audience | Ask what explains the growth and whether it will last |
| Using Trends as the only evidence | Topics chosen with no link to real customers | Confirm every topic against customer questions or site data |
How This Looks on Rankenza
The typical manual way to use Trends is to open the tool, type one idea, glance at the graph, and either write the post or abandon it. That approach wastes the tool's main strength, which is comparison, and it leaves the decision resting on a single chart that may reflect a spike, noise, or a term phrasing your customers never use.
Rankenza's way treats topic selection as research rather than a glance. Each article begins with research into the top ten results on the search results page for the target topic, so the topic is tested against what readers actually find for it, not just against a trend line. An intent filter checks that the topic matches what searchers are trying to do, which catches topics whose trend looks healthy but whose results serve a different purpose than your business. The draft is reviewed by a human before it reaches you, and internal links are drawn from your own site's sitemap, so the finished post connects to your existing pages. Your first article is free, then articles cost $3.60 each or $89 for 50, as listed on the Rankenza pricing page.
Trends still has a role in that workflow, and it is one you can do yourself before ordering: use it to shortlist topics, compare candidates, and spot seasonal timing, then bring the shortlist to the article brief. A topic that shows steady or rising interest, matches a real customer question, and fits your services is a strong candidate. A topic that only shows a spike, or that nobody in your business has ever been asked about, is a weak one however attractive the chart looks.
Yes. Google Trends is a free tool, and you can compare topics, time ranges, regions, and related queries without an account for basic use. It is one of the cheapest research steps a small business can take before committing to a blog post, and it pairs well with the topic-picking process in our guide on keyword research for small business websites.
A zero usually means the term's search volume is below the threshold the tool reports, not that nobody searches for it. Google's Trends FAQ explains that terms with low volume appear as zero. For local or niche service topics this is common. Try a broader version of the term to see the shape of interest, and cross-check the specific term with a keyword tool or with your own customer questions before dismissing it.
No. Trends shows relative interest on a 0 to 100 scale, normalised for time and location, as Google's Trends FAQ describes. It is designed for comparing topics and tracking change over time, not for counting searches. If you need volume estimates, use a keyword research tool and read its figures alongside the Trends shape, and see our long-tail keyword and seed keyword explainers for how to build a topic list worth checking.
Usually not. Google's helpful-content guidance warns against writing about things simply because they seem trending when you would not otherwise write about them for your existing audience. A trending topic outside your services may bring a brief visit, but it rarely brings an enquiry, and it dilutes the focus of your site. Favour topics at the overlap of search interest and your actual expertise.
Sources
- Google Trends Help, "FAQ about Google Trends data" — sampling, normalisation to a 0 to 100 scale, low-volume terms showing as zero, noise on low-interest queries, and the warning that Trends is not polling data: https://support.google.com/trends/answer/4365533
- Google Search Central, "SEO Starter Guide: The Basics" — changes taking weeks to show effect, and anticipating the words readers use to search: https://developers.google.com/search/docs/fundamentals/seo-starter-guide
- Google Search Central, "Creating Helpful, Reliable, People-First Content" — the warning against writing about topics merely because they seem trending: https://developers.google.com/search/docs/fundamentals/creating-helpful-content
- Google Search Central, "In-Depth Guide to How Google Search Works" — how pages are discovered, indexed, and served for relevant queries: https://developers.google.com/search/docs/fundamentals/how-search-works
To test topic ideas against real search demand, try the long-tail generator and read how to choose blog topics customers actually search.