Best Free Keyword Research Tools 2026

Keyword research is the foundation of every Google Ads campaign, every SEO content plan, and every YouTube channel that actually grows. The good news is you do not need to pay for an expensive subscription to find profitable keywords in 2026. The free keyword research tools available right now, combined with AI and your own search data, give you everything you need to build out a real keyword list. This guide walks through the best free keyword research tools I actually use, which ones are fully free versus freemium, and how to combine them into a workflow that works for SEO, PPC, YouTube, and Amazon.

1Why Free Keyword Research Tools Are Enough in 2026

The keyword research industry has been built on the idea that you need a $130 a month subscription to do real research. That has not been true for a while, and it is even less true now. The combination of Google's own free tools, AI prompts, and free tiers of paid platforms covers almost everything you actually need.

Keywords are also not as one-dimensional as they used to be. People still type keywords into Google, but they are also asking questions to AI tools, watching YouTube tutorials, and browsing Reddit. The hard part right now is more searches, less clicking through to an answer. So the goal is not just to find a high volume keyword. The goal is to find topics where you can answer the question while making people actually watch your video, read your article, or click through to your site.

This post walks through the free keyword research tools I use to do exactly that, in the order I would use them when starting a new project from scratch.

2Watch the Full Free Keyword Research Tools Walkthrough

If you want to see each tool in action, I walk through every one of these free keyword research tools in the video below. The video covers Google Keyword Planner, Google Trends, Google Search Console, AI prompts, Reddit mining, and the freemium tools like Answer The Public and Semrush.

3Google Keyword Planner (100% Free)

Google Keyword Planner is the leader of the free keyword research tools and the one I start with on every project. When you create a Google Ads account, you do not even need an active campaign to see data. You will see ranges for average monthly searches like 100 to 1K or 10K to 100K, and that is enough for most decisions. You do not need to know the exact number of searches per month. You just need to know that the keyword has enough volume to be worth targeting.

You can search up to 10 seed keywords at a time. If you start with terms like Google Ads, Google Ads training, Google Ads tutorial, and Google Ads 4, you will go from 747 keyword ideas to over 1,700 keyword ideas in a single search. That is a huge list to work from.

My favorite feature in Google Keyword Planner is the bid ranges. The low and high range columns show you what advertisers are actually bidding for each keyword. I prefer the low range because it shows the floor of what advertisers have to bid to get clicks. The high range can be skewed by one advertiser with a crazy manual bid. For example, Google Ads for lawyers shows a bid range of $52 to $156. That tells you exactly what the keyword is worth.

For local businesses, Google Keyword Planner is also useful because you can filter search volume data down to specific cities or DMA regions to see exactly how many people are searching in your area.

Question to Answer:

Have you created a Google Ads account to access Google Keyword Planner, even if you are not running campaigns yet?

4Google Trends (100% Free)

Google Trends is the free keyword research tool I use for anything trending and anything news-related. It is right in the name. The tool shows you whether interest in a topic is rising, falling, or staying flat over time.

The way I use it is to search for a topic like Google Ads and look at the interest level over the past five years. If a keyword is trending down, I might still create content about it because it is still searched, but I will weigh it differently than a keyword that is trending up. Local Services Ads, for example, is always trending up. That is a sign to create more content about it.

Google Trends has three sections I use the most:

• Top search terms: Shows the most popular related queries for your topic. For Google Ads, the top related terms include Google Ads Manager, Google Ads pricing, and Google Business Profile.
• Rising search terms: Shows queries that are growing quickly. Freelance Google ad specialist, AdWords consultant, and Google Ads specialist are all rising terms, which tells me there is real demand for individual experts.
• Suggested search terms: A newer feature where you enter your area of interest and Google suggests related search terms with their average interest levels. This works well for filling out a content calendar.

You can also adjust the search type. Google Ads as a topic on YouTube search returns a different set of trending queries than Google Ads on Google web search. That alone is worth checking when you are building out video content.

Question to Answer:

Have you checked your top three target keywords in Google Trends to see whether interest is rising, falling, or steady over the last five years?

5Google Search Console (100% Free)

Google Search Console is the most underrated free keyword research tool. The catch is that it only works once you have an established website with pages already getting impressions. Once you have that, it becomes one of the most valuable tools you have.

The reason is simple. Search Console shows you the exact search queries where your pages are getting impressions and clicks, along with your average position for each one. The most valuable view is the queries where your average position is in the 15 to 30 range. Those are the search terms where you are already showing up, but not yet ranking high enough to drive traffic. A small content improvement can push you from position 23 to position 8 and unlock real clicks.

From there, click on the specific query to see which pages are ranking for it. That tells you exactly which article or service page you need to improve. If the page Google is choosing to rank is not your best content for that query, you have a clear action item. Either improve that page, consolidate it with a better one, or create a new article that targets the query more directly.

Question to Answer:

Have you exported your top 50 striking distance keywords from Google Search Console and mapped them to specific pages on your website?

6AI Tools for Keyword Research (Free and Paid Plans)

AI is the keyword research tool I use the most now. The free versions of Gemini, ChatGPT, Claude, and Perplexity all give you enough usage to do meaningful keyword research. The paid plans (Gemini Pro, Claude Max, ChatGPT Pro, Perplexity Pro) give you more access, but the free tiers are enough to get started.

The prompt that works best for keyword research is simple. Something like:

"Give me 50 searches that people would do who are attempting to do their own Google Ads but struggling, with a seed short-tail keyword for each."

You get a list of 50 questions paired with the actual seed keyword behind each one. For Google Ads, that might look like "How do I track conversions in Google Ads?" with Google Ads conversion tracking as the seed keyword. Every one of those is a video topic, a blog post idea, or a service page you can create.

You can do this for any industry. I have used the same prompt structure for plumbers, tree services, and swimming pool companies. For a pool resurfacing company, I asked an AI tool for every type of pool resurfacing method, and it returned standard plaster, aggregate finishes, quartz, pebble, polished, full tile, fiberglass, thermoplastic coatings, vinyl liner replacement, and pool paint. That is 10 service pages you can build, all targeting specific high-intent keywords most competitors are not covering.

The advantage of using AI tools with web search (like Gemini Pro or Perplexity) is that they pull from real, current search behavior. They will give you topics that are actually being asked about right now, not just what your AI tool was trained on a year ago.

Question to Answer:

Have you run a simple AI prompt for your industry asking for 50 questions your potential customers are searching for, paired with seed keywords?

7Reddit and Community Mining (100% Free)

Reddit is one of the best free keyword research tools that nobody calls a keyword research tool. The reason is simple. The questions and complaints people post on Reddit are the exact phrases they would type into Google when they are looking for a solution.

The process I use is straightforward. Go to the relevant subreddit for your industry (r/GoogleAds, r/PPC, r/SEO, r/Plumbing, r/Trees, whatever fits). Sort by Top, then filter by the past year. Copy the top posts, then drop them into an AI tool and ask it to categorize the themes. You will get themes like budget burning without conversions, Performance Max confusion, sudden performance drops, setup mistakes, and hiring an agency questions.

Every theme is a content opportunity. Every specific question inside that theme is a video title, blog post, or service page idea. And because the questions come straight from real people in your industry, they tend to convert better than generic keyword research because the language matches how your customers actually talk.

You can do this weekly. Spend 10 minutes once a week mining Reddit for keyword and content ideas, and you will never run out of topics to create.

Question to Answer:

Which subreddits are your potential customers active in, and have you spent 10 minutes this week reading the top posts?

8Free Tier Tools: Semrush, Ahrefs, Moz, Ubersuggest, WordStream

The next category is freemium tools. These are paid platforms that give you a limited number of free searches per day or per month. They are not 100% free, but the free tier is enough to spot-check keywords and pull more accurate data than Google Keyword Planner gives you on a dormant account.

• Semrush Keyword Magic Tool (paid tool, 10 free queries/day): Pulls from a database of 27.9 billion keywords across 142 countries. You get exact search volumes, keyword difficulty scores, search intent tags (informational, navigational, commercial, transactional), and CPC data. The intent tagging alone is worth the daily limit. Semrush also has a Related AI Volume metric that tracks how often a keyword triggers Google AI Overviews.
• Ahrefs Free Tools (paid tool, 100 free keyword ideas per search): The Ahrefs Free Keyword Generator returns 100 keyword ideas per search, but only shows the keyword difficulty for the top 10. Ahrefs also has free tools for Google, YouTube, Amazon, and Bing keyword research. If you verify your website with Search Console, you can track up to 1,000 keywords for your own domain for free.
• Moz Keyword Explorer (paid tool, 10 free searches/month): Moz has the lowest free tier in this group but the most accurate organic difficulty scoring. The Organic CTR metric is the standout feature because it shows you how much of the traffic for a keyword is being stolen by ads, featured snippets, and AI Overviews. That tells you whether ranking for the keyword is even worth the effort.
• Ubersuggest (paid tool, 3 free searches/day): Combines SEO and PPC metrics in a single dashboard. The Content Ideas tab shows the exact URLs ranking for your target keyword along with their estimated traffic and backlinks, which is useful for competitive analysis.
• WordStream Free Keyword Tool (paid tool, free with email): Pulls directly from Google Ads and Bing Ads APIs. You get the top 25 results immediately and the full CSV by email. After the initial searches, it limits you to one free search per day, but the CSV export is fast for building Google Ads campaigns.

None of these are required. But pairing one of them with Google Keyword Planner gives you exact search volume data that the free Google Keyword Planner does not provide on its own.

Question to Answer:

Which one freemium tool from the list above would best complement your current free keyword research workflow?

9AnswerThePublic, Ask, Ryro, and Wordtracker

The next group of free keyword research tools focuses on question-based and long-tail keywords. These are the tools I use for finding content topics rather than commercial keywords.

• AnswerThePublic (paid tool, 3 free searches/day): Owned by Neil Patel Digital (NP Digital). The free version gives you three searches a day. It scrapes Google Autocomplete data to build a visual wheel of question-based queries (who, what, where, when, why, how) plus prepositions and alphabetical variations. It does not give you search volume, but the question discovery is unmatched. The Starter paid plan is low cost and gets you 100 searches per month if you need more.
• Ask.com keyword data (100% free): Type any keyword into Ask.com and you get a list of related questions at the bottom of the results. It is not a dedicated keyword tool, but it is a fast way to surface specific questions you may not have thought of.
• Ryro Keyword Tool (100% free): Enter a seed keyword and you get a wide list of related ideas. The results can be a little random (some of mine for Google Ads returned things like "Google Ads bar near me with billiards," which is clearly off), but you will find legitimate long-tail variations mixed in.
• Wordtracker (paid tool, limited free): Similar in structure to Google Keyword Planner. The free version is limited, but you can pull seed keywords and get a starting list quickly.
• SpyFu (paid tool, limited free): The Questions tab in SpyFu is what I use it for. I have targeted some of those questions specifically and they do drive traffic. Search queries like "why is my ad not showing" have surprising volume and converting a question into a blog post or video gives you a real shot at ranking.

If you are picking just one tool from this group to invest in, AnswerThePublic is the easiest to justify. The free version is enough to start, and the low-cost paid tier gives you everything you need for content planning.

Question to Answer:

Do you have a system for finding question-based long-tail keywords, or are you only researching commercial high-volume terms?

10Bonus: Free Keyword Research Tools for YouTube, Amazon, and App Stores

Most keyword research content focuses on Google. If you are creating YouTube videos, selling on Amazon, or publishing apps, you need different tools that pull data from those specific platforms.

• YouTube keyword tools (100% free): Google Trends has a YouTube search filter that shows you what is trending on YouTube specifically. YouTube Autocomplete itself is a free keyword tool. Type your seed keyword into the YouTube search bar and watch the suggestions. Those suggestions are pulled directly from real search behavior.
• VidIQ and TubeBuddy (paid tools, free Chrome extensions): Both have free Chrome extensions that show you search volume scores, competition, and related tags right inside YouTube. The free tier of each is enough for casual creators. I have used these for over 10 years on the Surfside PPC YouTube channel.
• Ahrefs YouTube Keyword Generator (paid tool, free version): Returns the top YouTube keyword suggestions with search volume ranges for the top results. Useful for video planning even if you do not have an Ahrefs paid account.
• Amazon keyword tools (100% free): Amazon Autocomplete is the free keyword research tool every Amazon seller should be using. Type a product term into Amazon and the suggestions show you the high-intent buying queries shoppers are typing. Pair it with the Ahrefs Amazon Keyword Generator for additional data.
• App Store and Play Store keyword research (paid tools with free tiers): Apps like Sensor Tower and Mobile Action have free tiers that show app store search terms. I have used these for app store keyword research before, and the free versions cover the basics.

If you are running a business that touches multiple platforms (e-commerce on Amazon, a YouTube channel, and a website), do not rely on one keyword tool for all of them. Each platform has its own free options that pull from real platform-specific data.

Question to Answer:

Which platforms outside of Google do your customers search on, and are you doing keyword research on those platforms specifically?

11Free Keyword Research Tools Comparison Table

Here is a quick reference comparing the main free keyword research tools covered in this post, along with their free tier limits and what they are best for.

The "100% Free" rows are the ones I would build my workflow around. The freemium tools are useful supplements, but you can do most of your keyword research with just the free tools and an AI subscription you may already be paying for.

12The Free Keyword Research Workflow I Use

No single free keyword research tool gives you the complete picture. Google Keyword Planner hides exact volume data on free accounts. AnswerThePublic does not give you competitive metrics. Moz and Semrush limit your daily searches. The way to win with free tools is to combine them in a specific order.

Here is the free keyword research workflow I actually use for a new project:

1. Start in Google Keyword Planner. Build your seed keyword list and pull baseline volume ranges. Use the bid range columns to identify high-value commercial keywords.
2. Layer in Google Trends. Check whether your top keywords are trending up, down, or flat. Pull related rising queries to add to your list.
3. Run AI prompts for question-based queries. Use Gemini, ChatGPT, Claude, or Perplexity to generate 50 questions your customers are actually asking, paired with seed keywords.
4. Mine Reddit for the questions AI missed. Spend 10 minutes in the relevant subreddit to find real complaints and questions in your customers' own words.
5. Check Google Search Console for striking distance keywords. If you have an existing site, this is where you find the keywords you can rank for fastest.
6. Use freemium tools for spot-checking. Drop your finalized list into Semrush, Ahrefs, or WordStream to get exact volumes and difficulty scores on the keywords that actually matter.

This workflow has zero recurring cost. If you want to add one paid tool, AnswerThePublic on the Starter plan or a single AI subscription will cover almost any gap.