You do not need an expensive subscription to learn what your customers are typing into Google. Free keyword research tools can show you the exact phrases people use to find businesses like yours, which questions they ask, and which searches are worth building a page around. For most small business owners, the free options are more than enough to get started.
This guide walks through the best free tools, what each one is actually good at, and a simple order to use them in. If you are brand new to the topic, it pairs well with our plain-English overview of keyword research for small business.
Why free tools are enough when you are starting out
Paid tools shine when you are managing dozens of pages or tracking competitors at scale. But when you run a plumbing company, a bakery, or a law office, you mostly need to answer three questions. What do people search for? How often? And can I realistically rank for it?
Free tools answer all three, as long as you know which tool to reach for. The trick is not finding one perfect tool. It is stacking a few of them, because each one sees a slightly different slice of what people search.
Tip: Start with one seed phrase that describes what you sell, like "emergency plumber" or "gluten free bakery." Run that same seed through every tool below and collect the ideas in a spreadsheet. You will be surprised how quickly a list of 50 to 100 real searches comes together.
The best free keyword research tools
Google itself (autocomplete and related searches)
The most underrated free keyword research tool is the Google search bar. Start typing your service and watch the suggestions drop down. Those are real, popular searches, ranked by how often people use them. Scroll to the bottom of any results page and you will also find "People also search for" and "Related searches," which are gold for finding variations you would never think of.
Google's "People also ask" boxes are just as useful. They show the questions searchers want answered, which is exactly what you want to know when you write content that ranks and gets quoted by AI answer engines.
Google Keyword Planner
Keyword Planner lives inside Google Ads and is free to use even if you never run an ad. It gives you search volume ranges and shows related terms straight from Google's own data. The one catch is that volumes are shown in broad ranges (like 1K to 10K) unless you are running an active campaign, but for picking between two ideas, ranges are plenty.
It is the closest thing to Google telling you directly how many people search for something each month.
Google Search Console
Once your site is live, Google Search Console becomes your best keyword tool, because it shows the searches you are already appearing for. The Performance report lists real queries, how many times you showed up, and where you rank. Look for terms where you sit on page two. A small push often moves those onto page one.
Google Trends
Google Trends does not give raw volume, but it shows whether interest in a topic is rising, falling, or seasonal. That matters for a landscaper deciding when to publish a leaf-cleanup page, or a retailer planning around holidays. You can also compare two terms side by side to see which phrasing wins.
AnswerThePublic and free question tools
Tools like AnswerThePublic turn a single seed word into a map of questions, comparisons, and prepositions people search. The free version limits how many searches you get per day, but even a handful reveals the "how," "why," and "near me" phrases that make great blog topics and FAQ sections.
Free tiers of the big SEO platforms
Several well-known paid platforms offer limited free versions or browser extensions. Many give you a small number of free lookups per day, showing volume and difficulty for a keyword. You will not get unlimited access, but a few checks a day is enough for a small site. If you eventually outgrow them, we cover when an upgrade makes sense in our guide to paid keyword research tools.
How the free tools compare at a glance
| Tool | Best for | Shows volume? |
|---|---|---|
| Google autocomplete | Quick idea generation | No (ranked by popularity) |
| Keyword Planner | Volume ranges and related terms | Yes (ranges) |
| Search Console | Terms you already rank for | Impressions and position |
| Google Trends | Seasonality and comparisons | Relative interest |
| AnswerThePublic | Questions and phrasing | No |
A simple free workflow to follow
- Write down a few seed phrases that describe what you sell. Our guide to seed keywords shows how to build that starting list.
- Expand each seed with Google autocomplete and Keyword Planner. Collect every reasonable phrase in a spreadsheet.
- Add question-style terms from "People also ask" and AnswerThePublic.
- Check Google Trends for anything seasonal so you publish at the right time.
- Sort your list by intent, keeping the phrases where someone sounds ready to buy or hire.
From there, the goal is to match each phrase to a page. That is where keyword mapping comes in, giving every page one clear target so you never have two pages fighting over the same term.
What to look for in each keyword
A long list is only useful if you know which entries to keep. Three things matter most.
- Intent. Does the searcher want to buy, hire, or just learn? Match the phrase to the right kind of page. Our guide to search intent breaks this down.
- Realistic difficulty. Broad terms are crowded. Specific phrases are easier to win. Learn to read keyword difficulty before you commit.
- Local and long-tail angles. "Plumber Austin" beats "plumber," and long-tail keywords like "emergency water heater repair near me" bring in ready buyers.
Frequently asked questions
Are free keyword research tools accurate enough for a small business?
Yes. Search volumes from any tool, free or paid, are estimates anyway. For a local or small-scale business, the ranges and trends free tools provide are accurate enough to make good decisions. Search Console is especially reliable because it shows your own real data, not an estimate.
Do I need to know keyword volume to pick a good keyword?
Not always. Volume helps you compare two similar options, but intent matters more. A phrase searched 40 times a month by people ready to hire you is worth more than one searched 4,000 times by people just browsing. Focus on relevance first, then use volume as a tiebreaker.
How many keywords should I start with?
Start small. Pick one keyword for your homepage and one for each main service or product page, then a handful for future blog posts. A tight list you actually act on beats a giant spreadsheet you never touch. Our guide to finding keywords your customers search for shows how to prioritize.