What are free tools for keyword research?

Updated October 2026 · How we answer

Short answerGoogle Keyword Planner, Google Trends, AnswerThePublic, and Ubersuggest are popular free options. Each has limits, but they can help you find keyword ideas and estimate demand.

Google's own tools

Google Keyword Planner is designed for Google Ads, but you can use it for SEO research. It shows search volume ranges and keyword ideas. You need a Google Ads account, but you don't have to run ads. Google Trends shows relative interest over time and by region, which helps you spot seasonal or rising topics.

Google Search Console is another free tool that shows which queries your site already appears for. It's invaluable for finding keywords you're close to ranking for and optimizing existing content.

Third-party free tools

AnswerThePublic visualizes questions people ask around a keyword, which is great for finding long-tail and question-based keywords. Ubersuggest offers limited free searches per day and provides keyword suggestions, volume, and difficulty scores.

Other options include Keyword Surfer (a Chrome extension), Soovle, and WordStream's free keyword tool. These tools often have daily search limits or show limited data, but they can still spark ideas.

  • Google Keyword Planner: search volume ranges and keyword ideas
  • Google Trends: relative interest over time and by region
  • AnswerThePublic: question-based and long-tail keywords
  • Ubersuggest: limited free searches with volume and difficulty
  • Google Search Console: queries your site already ranks for

How to use them effectively

Start with a broad topic, then use these tools to expand into specific keywords. Look for keywords with decent search volume but low competition, especially if your site is new. Combine data from multiple tools to get a fuller picture, since free tools often have limited or estimated data.

Don't rely solely on volume; consider relevance and intent. A keyword with lower volume but high relevance can bring more valuable traffic than a high-volume but vague term.

Common mistakes

  • Assuming free tools provide exact search volume; most give ranges or estimates that can be off.
  • Only looking at search volume and ignoring keyword difficulty and relevance to your audience.
  • Forgetting to check Google Search Console for keywords you already have a chance to rank for.
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