The best free keyword research tools in 2026 are Google’s own: Search Console for the queries you already rank for, Keyword Planner for rough volume, Trends for seasonality, and autocomplete plus People Also Ask for real phrasing. Add Bing Webmaster Tools, Ahrefs Webmaster Tools and its free keyword generator, a free Semrush account, AnswerThePublic, Moz’s free keyword tool and Ubersuggest, and you can research a whole site without paying.
The catch is the limits. Most free tiers cap you at a few searches a day. So stop asking which tool is best. Ask which free tool fits which job.
A quick disclosure. Nobody paid to be on this list and I don’t use affiliate links here. It’s based on features and on how I actually run keyword research for small sites. I checked every free limit below on the vendor’s own site on October 5, 2026, and I left out any tool whose free tier I couldn’t confirm.
What Most Free Tool Lists Get Wrong
Most lists rank tools by database size or how many keyword ideas they spit out. That’s the wrong test. A free tier that shows you 1,000 ideas but only three searches a day won’t get you through a real project.
The other common mistake is trusting one tool’s volume number as fact. Every free tool estimates volume its own way, and Google Trends doesn’t show volume at all. When two tools disagree by a factor of ten, neither is lying. They’re measuring different things.
What decides it is the job. Finding ideas, checking volume, spotting seasonal swings and seeing what you already rank for are four different jobs, and no single free tool does all four well. In my experience, people who say free tools “don’t work” picked one tool and asked it to do everything.
The 4 Conditions That Decide Which Free Tool You Need
- Does your site already get impressions? If yes, Search Console beats every third-party tool, because it shows your real queries. If the site is brand new, you start with idea tools.
- Do you need volume numbers or just ideas? Ideas are easy to get free. Volume estimates are what free tiers ration hardest.
- How many lookups a day? Three searches a day is fine for one blog post. It’s useless for mapping a 50-page site.
- Are you researching competitors? Free tiers are thin here. A few daily lookups in Semrush or Ubersuggest is about as far as free goes.
The 12 Free Keyword Research Tools, Compared
| Tool | Free limit (as the vendor states it) | Best job |
|---|---|---|
| Google Search Console | Free; rare queries hidden; 1,000 rows in the UI | Queries you already rank for |
| Google Keyword Planner | Free; needs Google Ads billing setup | Rough volume ranges |
| Google Trends | Free; relative 0 to 100 scale | Seasonality, comparing terms |
| Google autocomplete | Free, no account | Real phrasing |
| People Also Ask | Free, no account | Question keywords |
| Bing Webmaster Tools | Free account | Second opinion on volume |
| Ahrefs Webmaster Tools | Free for verified sites | Keywords your site ranks for |
| Ahrefs Keyword Generator | Free; up to ten seed words or phrases | Quick idea lists |
| Semrush free account | 10 queries a day per core tool | Competitor spot checks |
| AnswerThePublic | 3 searches a day | Question and comparison ideas |
| Moz Keyword Research | Free tool; no daily cap stated on the page | Difficulty and intent check |
| Ubersuggest | 3 searches or reports a day | Small sites, light use |
Google Search Console: Best for Sites That Already Rank
If your site has been live for a few months, start here. Search Console shows the exact queries people typed before your pages appeared, with clicks, impressions and average position. No other free tool shows you your own data.
The limits are real, though. Google’s Search Central blog on Search Console performance data explains that some queries are anonymized for privacy, that the report interface shows up to 1,000 rows, and that about 16 months of data is kept. And it only knows queries you already appear for. It can’t tell you about the ones you’re missing. My step-by-step method is in Google Search Console keyword research.
Google Keyword Planner: Best for Rough Volume
Keyword Planner lives inside Google Ads and costs nothing to use. You don’t have to run ads. But Google’s Keyword Planner help page says you must finish account setup by entering billing information before you can use “Get ideas for new keywords”.
I use it for one thing. Scale. Is this a keyword with ten searches a month or ten thousand? The numbers are estimates built for advertisers who want to plan ad budgets, not for writers deciding which blog post to write next, so treat them as direction. Don’t plan a content calendar around the exact figure.
Google Trends: Best for Seasonality
Trends doesn’t show search counts. Google’s Trends FAQ explains that each data point is divided by total searches for that place and time, then scaled from 0 to 100. So two terms can both hit 100 and still have very different real volumes.
Its strength? Timing. If “pool cleaning” peaks every May in your country, you publish in March. I also use it to compare two phrasings head to head before picking one for a page title.
Google Autocomplete and People Also Ask: Best for Real Phrasing
Type a seed into Google and read the predictions. Google’s autocomplete help page says they “reflect real searches that have been done on Google.” Add a letter after your seed, “a”, “b”, “c”, and you’ll get dozens more.
People Also Ask is the question box in the results. Click one question and more appear. These are my favourite free sources for blog topics, and I walk through the full method in keyword research for blog posts. Neither gives you volume. Both give you the words real people use, which matters more than most tools admit.
Bing Webmaster Tools: Best Free Second Opinion
Bing’s Keyword Research tool is free with a Bing Webmaster Tools account. According to Bing’s help pages, it suggests related keywords and shows how often they’re searched, the trend over time and a breakdown by country.
The data comes from Bing, not Google. Different audience, different volumes. Still, when Keyword Planner gives me a vague range, Bing’s numbers are a useful sanity check on whether a term has any demand at all.
Ahrefs Webmaster Tools and Keyword Generator: Best Free Ahrefs Data
Ahrefs has two free options. Ahrefs Webmaster Tools is free for websites you verify you own. Its Site Explorer shows the keywords and backlinks for your site, with up to 1,000 visible at once, and Site Audit gets 5,000 crawl credits per month per project.
The free Keyword Generator is separate and needs no site. Ahrefs says you can enter up to ten words or phrases, and it covers Google plus other engines such as YouTube, Bing and Amazon. Honestly, for a quick idea list on a new topic, I reach for this before anything else.
Semrush Free Account: Best for Competitor Spot Checks
A free Semrush account needs no credit card. Semrush’s knowledge base lists 10 queries a day for Domain Overview, Keyword Research, Competitor Research and Backlinks, plus 10 tracked keywords in Position Tracking and a Site Audit allowance of 100 pages a month.
Ten a day disappears fast. Very fast. I spend them on competitor domains, because that’s the data the Google tools can’t give me. My process for that lives in how to find competitor keywords.
AnswerThePublic: Best for Question Ideas
AnswerThePublic’s help center says free accounts get up to 3 searches a day, resetting daily. Each search loads the full report, covering Google, Bing, YouTube, TikTok, Instagram, Amazon, ChatGPT and Gemini.
Catches? Two. Search volume and CPC show for only two branches per report, and exports stop at 30 keywords. I use it for the question and comparison wheels, then check volume elsewhere.
Moz Keyword Research: Best for a Quick Difficulty and Intent Read
Moz’s free keyword research tool shows monthly volume, organic CTR, difficulty, the minimum Domain Authority of ranking pages and a primary search intent label. That’s a useful bundle for a single keyword you’re unsure about.
The page doesn’t state a daily or monthly cap, and full Keyword Explorer access sits behind a Moz Pro trial. So check your allowance when you sign in. Remember that difficulty scores differ between tools, which I explain in keyword difficulty.
Ubersuggest: Best for Light Use on Small Sites
Ubersuggest’s knowledge base lists a free account limit of 3 searches or reports a day, one project, 25 tracked keywords per project with weekly desktop updates, and up to 3 keyword lists of 30 keywords each.
Its pricing page only promotes a 7-day trial, so the free account is easy to miss unless you go looking for it in the help center, which is exactly where I found the limits above. Small site, a few checks a week? Enough. For anything bigger, the Google tools do more.
Which Free Tool Wins for Each Job?
| Job | Pick | Runner-up | Why |
|---|---|---|---|
| Find ideas for a new site | Ahrefs Keyword Generator | Autocomplete | Fast idea lists, no site needed |
| Find question keywords | People Also Ask | AnswerThePublic | Unlimited and straight from Google |
| Check rough volume | Keyword Planner | Bing Webmaster Tools | Google’s own estimates |
| Spot seasonality | Google Trends | Keyword Planner | Built for change over time |
| See what you already rank for | Search Console | Ahrefs Webmaster Tools | Your real queries |
| Peek at a competitor | Semrush free | Ubersuggest | 10 daily queries beats 3 |
| Judge one keyword’s difficulty | Moz | The live results page | Difficulty and intent in one view |
My Verdict on Free Keyword Research Tools
For most small business sites, Search Console plus Keyword Planner plus autocomplete is the best free keyword research setup. However, if your site is brand new, start with the Ahrefs Keyword Generator and People Also Ask, because Search Console has nothing to show you yet.
Why Google first? Because the data comes from the search engine you’re trying to rank in, and the daily caps are generous or nonexistent. Third-party free tiers are best treated as samplers. Each one gives you a slice of its paid product, usually a few lookups a day.
My own workflow on a small site runs in this order. Search Console for existing queries, autocomplete and People Also Ask for phrasing, Keyword Planner for rough volume, Trends for timing. Then I spend Semrush’s daily queries on two or three competitors. Here’s how that looks on a brand new site, as an illustrative example. Say a home bakery wants to blog. Search Console is empty, so I’d type “sourdough” into Google and note the predictions, open People Also Ask for the questions, run the best ten phrases through the Ahrefs generator for more ideas, and check two of them in Trends to see whether interest rises in winter. Twenty minutes, zero cost.
That covers the full keyword research process without a subscription.
When the Answer Flips
- If you’re researching more than about 100 keywords a week, free caps will slow you down so much that a paid tool, or paying someone, is cheaper than your time.
- If competitors are your main source of ideas, free tiers run out fast. Competitor data at scale is what paid tools really sell.
- If you need to group hundreds of keywords, none of these tools cluster for free in a useful way. See my roundup of keyword clustering tools instead.
- If you sell on Amazon or YouTube, a tool that covers those engines, like the Ahrefs generator or AnswerThePublic, matters more than Google-only data.
Should You Do It Yourself or Hand It Off?
If you have a few hours and one site, these free tools are enough. I’d honestly rather you spend a weekend learning Search Console, Keyword Planner and the results page properly than pay a monthly fee for a dashboard you open twice and then forget about.
If you’d rather skip the daily caps, my team does this as a keyword research service. You can try it with 5 keywords free before paying anything.
Frequently Asked Questions
What Is the Best Free Keyword Research Tool?
For a site that already gets traffic, Google Search Console, because it shows the real queries your pages appear for. For a brand new site, a free idea tool like the Ahrefs Keyword Generator plus Google autocomplete gets you further, since Search Console has no data yet.
Is Google Keyword Planner Really Free?
Yes, it costs nothing and you don’t have to run ads. Google does require you to finish your Google Ads account setup, including billing information, before you can get new keyword ideas. Its volumes are estimates, so use them as a rough guide.
Can You Do Keyword Research Without Paid Tools?
Yes. Search Console, Keyword Planner, Trends, autocomplete and People Also Ask cover every step of a normal keyword research project for a small site. Paid tools mainly save time on competitor research and large lists.
How Many Free Searches Do Tools Like Semrush and Ubersuggest Allow?
As of October 2026, Semrush’s free account lists 10 queries a day for its core research tools. Ubersuggest and AnswerThePublic each list 3 searches a day on free accounts. Vendors change these limits often, so check their help pages before you plan around them.
Last updated: October 2026 by Mizanur Rahman
