10 Free Keyword Research Tools

Free keyword research tools help you find what people search for, how often, and how competitive it is — without paying for Ahrefs or Semrush. Below are 10 tools that cover keyword generation, search volume, tracking, and bulk research, each with its actual free-tier limits so you know what you’re getting before you sign up.

• Google Keyword Planner
• Ahrefs Free Keyword Generator
• Ubersuggest
• Google Trends
• Google Search Console
• Keyword Surfer
• Answer The Public
• Keyword Sheeter
• Wordtracker Free Keyword Tool
• Moz Keyword Explorer (Free Tier)

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Comparison at a Glance

Google Keyword Planner

Google Keyword Planner is Google’s own free keyword generator, built into Google Ads. Type in a seed keyword or a URL and it returns related terms with monthly search volume ranges, competition level, and suggested bid — useful even if you never run an ad. It’s one of the few free tools pulling volume data straight from Google itself, which is why it’s still the baseline most SEOs check first.

• Search volume shown as a range (not exact), unless you’re running active ad spend
• Filters by location and language, useful for local SEO research
• Requires a free Google Ads account to access, but you don’t need to spend anything

Ahrefs Free Keyword Generator

This is the tool people mean when they search “ahrefs free keyword tool” or “free ahrefs keyword tool” — Ahrefs’ no-signup Keyword Generator pulls up to 150 keyword ideas per search, split across Google, Bing, YouTube, and Amazon. It shows exact search volume for your seed term and the first 10 related ideas, then blurs the rest behind a paid plan.

• Covers four separate search engines from one query
• Includes keyword difficulty score alongside volume
• No account needed, but daily searches are rate-limited

Ubersuggest

Ubersuggest is a solid answer to “free keyword generator” and “free keyword search volume tool” searches — it returns volume, SEO difficulty, paid difficulty, and cost-per-click for any seed keyword, plus a list of related and question-based variations. Neil Patel’s tool also shows the top-ranking pages for that keyword, which helps you gauge what kind of content is already winning.

• 3 free searches per day without creating an account, more with a free account
• Content ideas tab shows top-performing articles for a keyword
• SERP analysis included for the top 10 ranking pages

Google Trends

Google Trends shows relative search interest over time rather than raw volume, which makes it the right tool for spotting rising or seasonal keywords before competitors do. It compares up to five terms at once and breaks results down by region, which is genuinely useful for deciding which keyword variant to target in a specific market.

• Free and completely unlimited
• Region and time-range filters for local or seasonal keyword planning
• Related queries panel surfaces rising searches you wouldn’t think to check manually

Google Search Console

Google Search Console (GSC) is the free keyword tracker most people already have and don’t fully use. Unlike the tools above, GSC shows you the exact queries your own pages already rank for, along with real clicks, impressions, average position, and click-through rate — the same data used to write this update.

• 100% free, no volume limits since it’s your own site’s data
• Performance report shows which queries get impressions but no clicks — a signal to fix titles or content
• URL Inspection tool lets you request re-indexing after updates

Keyword Surfer

Keyword Surfer is a free Chrome extension that shows monthly search volume, CPC, and keyword suggestions directly inside the Google search results page, so there’s no separate tool to open. It’s what people mean by “free keyword tool extension” — you search normally and the data appears alongside the results.

• Search volume shown for over 50 countries
• Related keywords appear in a sidebar next to organic results
• Free forever, made by Surfer SEO as a lead-in to their paid platform

Answer The Public

Answer The Public turns a seed keyword into the actual questions, prepositions, and comparisons people type into search engines, visualized as a wheel of related phrases. It’s the best free option for finding long-tail, conversational keywords that a standard volume-based tool won’t surface.

• Groups results into questions, prepositions, comparisons, and alphabetical
• Export to CSV for building a content calendar
• Free tier limits you to a couple of searches per day

Keyword Sheeter

Keyword Sheeter is the closest thing to a free bulk keyword tool — it pulls thousands of Google autocomplete suggestions in seconds, with no daily search limit. It doesn’t show search volume on its own, but you can paste the exported list into Keyword Planner or Ubersuggest afterward to filter by volume.

• Genuinely unlimited scraping, no account required
• Negative keyword filter removes irrelevant suggestions automatically
• Best paired with a volume tool since it doesn’t estimate demand itself

Wordtracker Free Keyword Tool

Wordtracker’s free tool returns search volume and a competition score for a seed keyword, pulled from its own search database rather than Google’s. It’s a fast way to sanity-check a keyword idea when you’ve already used up your daily searches on other free tools.

• Volume and competition shown side by side
• Related keyword suggestions included in the same results page
• Free results are capped, with the full list gated behind a paid account

Moz Keyword Explorer (Free Tier)

Moz’s Keyword Explorer combines search volume, a proprietary difficulty score, organic CTR estimate, and a priority score that blends all three into one number. The free account includes 10 queries a month, which is enough for occasional spot-checks even if it won’t replace a paid tool for ongoing research.

• Priority score simplifies “should I target this keyword” decisions
• SERP analysis shows page authority of top-ranking competitors
• Free tier resets monthly, no credit card required to sign up

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How to Choose the Right Free Keyword Tool

Different tools answer different questions, so most SEOs end up using two or three together rather than relying on one. Match the tool to what you actually need to know before picking one:

• Need raw search volume? Google Keyword Planner, Ubersuggest, or Wordtracker
• Need bulk keyword ideas fast? Keyword Sheeter, paired with a volume tool afterward
• Need to track your own site’s rankings? Google Search Console
• Need question-based, long-tail keywords? Answer The Public
• Need to research without leaving Google’s results page? Keyword Surfer

For a deeper look at where keyword research fits into overall SEO strategy, see our guide on on-page SEO vs. off-page SEO and our roundup of the best tools every on-page SEO expert uses.

Free vs. Paid Keyword Research Tools

Free tools are enough for most small sites and blogs, especially if you combine two or three from this list to cover volume, tracking, and bulk ideas. Paid tools like the full Ahrefs or Semrush plans mainly add historical data, competitor gap analysis, and higher search limits — worth it once you’re managing multiple sites or running competitive research at scale, but not a requirement to get started.

Once you’ve picked your target keywords, the next step is making sure the pages built around them actually rank and convert. Our guide on improving website speed for better SEO rankings and tracking conversions with Google Analytics cover what happens after the keyword research is done.

Conclusion

The right free keyword research tools depend on what you’re trying to find — search volume, bulk ideas, question-based phrases, or your own site’s real rankings. Google Keyword Planner, Ahrefs’ free generator, and Ubersuggest cover volume and difficulty, Keyword Sheeter and Answer The Public handle bulk and long-tail discovery, and Google Search Console tracks how your own pages actually perform once published. Using two or three of these together, free, gets you research quality close to a paid subscription without the monthly cost.

If you’d rather have a website already structured to rank for the keywords you find, see how we approach it on our SEO-friendly blog layout guide or check what’s holding your current website back from bringing in leads.

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