Best Free Keyword Research Tool: 8 Options Compared

What the best free keyword research tool needs to do

Keyword research involves three separate jobs, and no free tool does all three well:

1. Finding ideas. Discovering the phrases people actually type, especially specific long-tail phrases.
2. Measuring demand. Estimating how often each phrase is searched and whether interest is growing.
3. Judging competition and intent. Working out what kind of page ranks and how hard it would be to beat.

Paid SEO suites bundle all three into one interface, which is what you pay for. Free tools usually specialise in one job. That is why "best free keyword research tool" has no single answer, and why searchers keep narrowing the question. Google's suggestions for this phrase include "best free keyword research tool for amazon kdp", "best free keyword research tool for youtube", "best free keyword research tool for etsy" and "best free ai keyword research tool". The right tool depends on where your audience searches.

When judging any free option, check four things: where its data comes from, whether it shows search volume, whether it needs an account, and how much it limits free use.

Best free keyword research tools compared

The table below summarises the main free options at the time of writing. Freemium limits change often, so confirm current terms on each tool's official site.

The sections below explain when each one is worth your time.

Free search engine tools: Google and Bing

Google Keyword Planner

Keyword Planner lives inside Google Ads and is free to use with an account. It suggests related keywords and gives search volume estimates straight from Google, which makes it a widely used free source of demand data. It was built for advertisers, so it also shows bid estimates and competition levels that refer to ads, not organic rankings. Volumes are frequently displayed as broad ranges rather than exact numbers.

Google Search Console

If your site is already live, Search Console is one of the most useful free tools. Its performance report shows the actual queries your pages appeared for, with impressions, clicks and average position. Queries with many impressions but few clicks are often your quickest wins. It cannot help with a site that has no content yet.

Google Trends

Trends shows how interest in a term changes over time and across regions, on a relative 0 to 100 scale. It is ideal for spotting seasonality and comparing two phrasings, but it does not give absolute search counts. You can also switch the search type to YouTube Search, which helps video creators see how interest differs between Google and YouTube.

Bing Webmaster Tools

Bing offers its own Webmaster Tools for site owners, which requires an account. Its reports and features change over time, so check Bing's official documentation for what keyword and search data it currently provides. It is worth a look if part of your audience uses Bing.

Autocomplete tools for long-tail keyword ideas

Autocomplete predictions come from the search engines themselves and reflect phrases people really search, which makes them a useful free source of keyword ideas. Their weakness is that they show which phrases exist, not how often they are searched.

Egosaru is a free tool that collects suggestions from Google, Bing, YouTube, Amazon, Rakuten, Yahoo! and DuckDuckGo in one go. It also queries the keyword plus each letter A to Z and each digit 0 to 9, so one search returns a long list of long-tail variations. Results can be copied, or downloaded as CSV or PDF, and no registration is required. You can see the suggestions for "best free keyword research tool" as an example. The interface is in Japanese, with an English toggle.

Because it covers more than Google, Egosaru is useful for the platform-specific searches above. Amazon sellers and KDP authors can check Amazon suggestions for a product term such as "journal", and YouTubers can do the same with YouTube suggestions. Etsy is not one of its sources, so for Etsy use the search bar on Etsy itself.

AnswerThePublic is another tool people use for question-style content ideas, for example when planning FAQ sections. What its free use includes, such as any volume data and usage limits, can change, so check its official site for current terms.

Developers who want suggestion data in their own scripts can use the free Egosaru Suggest API, which returns the same data as JSON once you issue an API key after logging in.

Freemium SEO suites and AI keyword tools

Platforms such as Ahrefs and Semrush are mainly paid products. Whether they offer free tools, trials or free accounts, and what limits apply, differs by vendor and changes often, so check each official site for current pricing and free allowances. Where free access exists, it can help with an occasional check of keyword difficulty or a competitor's top pages, but it is rarely enough to be your only tool.

Interest in AI is clear from the suggestion data, which includes "best free ai keyword research tool" and "best free keyword research tool chatgpt". AI chat assistants are good at:

• brainstorming seed keywords for a new topic
• grouping a long exported keyword list by intent
• suggesting article angles and outlines

They are not a substitute for search data. Unless an assistant is connected to a live keyword source, its volume and difficulty figures may be guesses. Use AI to organise real data from the tools above, not to generate the data.

Keyword research for blog posts with free tools

Here is a free workflow that covers ideas, demand and competition for a blog:

1. Pick a seed topic your readers care about.
2. Collect long-tail phrases with an autocomplete tool and export them to a spreadsheet.
3. Remove irrelevant phrases and group the rest by intent: questions, how-tos, comparisons.
4. Check rough demand for each group's main phrase in Google Keyword Planner, and seasonality in Google Trends.
5. Search each main phrase and look at the top results. If they are big brands with in-depth pages, choose a more specific variation.
6. Write one post per intent group, using the main phrase in the title and closely related phrases as subheadings.
7. Review Search Console after a few weeks to find new queries your post appears for, and update it to cover them.

This routine uses only free tools and is often enough for blogs and small business sites that are starting out.

How to choose the best free keyword research tool for you

Recommendations on forums such as Reddit can point you to tools worth testing, but they reflect individual experience and go out of date as free plans change. Test two or three options on a topic you know well and keep the ones whose data matches what you see in the search results.

Conclusion

There is no single best free keyword research tool, but there is a practical free combination for most people: an autocomplete tool for ideas, Google Keyword Planner for demand, Google Trends for timing, and Google Search Console once your site has traffic. If an SEO suite offers free access, use it for occasional competitor checks, and use an AI assistant to organise your lists. Together, these handle ideas, demand and timing reasonably well, but competition analysis remains the weak spot of free tools.

The trade-off is time. Free tools make you move data between tabs and spreadsheets yourself, while paid suites do that for you. If keyword research becomes a weekly task, or you need competitor data regularly, a paid plan may pay for itself. Until then, pick one seed topic, run it through the free workflow above and judge the tools by how useful the resulting list is.