SEO Keyword Analysis Tools

Top 3 Free SEO Keyword Analysis Tools

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If you are just starting out in SEO (or even if you’ve been doing it for a while), the price tags on premium tools like Ahrefs or Semrush can be scary. Paying $100+ a month just to see search volume feels like a lot.

The good news? You don’t actually need to pay that much.

In my experience, you can get 90% of the job done by combining three powerful free tools. These are the top 3 tools I personally use for my projects, and how I balance them to get the best results without spending a dime.

Google keyword planner interface

This is the “OG” of keyword research. Since it comes directly from Google, it is often considered the source of truth for search data.

My Experience: I generally use this when I want raw, reliable data. It’s built for advertisers, but it’s a goldmine for SEOs if you know where to look.

Pros:
  • Most Accurate Data: The data comes straight from the search engine itself, not a third-party estimate.

  • Totally Free: You just need a Google Ads account (you don’t actually have to run a campaign).

  • Great for Commercial Intent: It shows “Bid” prices, which tells you if a keyword is profitable. If advertisers are paying high amounts for a click, it’s a “Money Keyword.”

Cons:
  • Vague Volume Ranges: If you don’t spend money on ads, Google sometimes only shows ranges (e.g., “1k – 10k”) rather than exact numbers.

  • Ad-Focused UI: The interface is cluttered with metrics like “Ad Impression Share” which are useless for organic SEO.

Pros:

Most Accurate Data: The data comes straight from the search engine itself, not a third-party estimate.

Totally Free: You just need a Google Ads account (you don’t actually have to run a campaign).

Great for Commercial Intent: It shows “Bid” prices, which tells you if a keyword is profitable. If advertisers are paying high amounts for a click, it’s a “Money Keyword.”
Cons:

 

Vague Volume Ranges: If you don’t spend money on ads, Google sometimes only shows ranges (e.g., “1k – 10k”) rather than exact numbers.

 

Ad-Focused UI: The interface is cluttered with metrics like “Ad Impression Share” which are useless for organic SEO.

Best For:

 

Validating Search Volume. Use this when you have a list of keywords and you want to check if people are actually searching for them.

Link to the Tool:  Google Keyword Planner

2. Ubersuggest

ubersuggest interface

This is my favorite tool for “on-the-go” analysis. While the website is great, I specifically recommend using the Chrome Extension.

My Experience: I use this to analyze search results in real-time. When I type something into Google, the extension overlays data right on top of the results page. It feels like having “X-ray vision” for Google.

Pros
  • Live SERP Analysis: You can see the Domain Authority (DA) and estimated traffic for every website ranking on the first page.

  • Keyword Suggestions: It shows related keywords and their volume in a sidebar next to your search results.

  • User-Friendly: Much prettier and easier to understand than Google’s tools.

Cons
  • Daily Limits: The free version limits how many searches you can do per day.

  • Upselling: You will see a lot of pop-ups asking you to upgrade to the paid plan.

Pros:

 

Live SERP Analysis: You can see the Domain Authority (DA) and estimated traffic for every website ranking on the first page.

 

Keyword Suggestions: It shows related keywords and their volume in a sidebar next to your search results.

 

User-Friendly: Much prettier and easier to understand than Google’s tools.

 

Cons:

 

Daily Limits: The free version limits how many searches you can do per day.

 

Upselling: You will see a lot of pop-ups asking you to upgrade to the paid plan.

Best For:

 

Competitor Analysis & SERP Research. Use this to see who is ranking and why. If you see a website with low Domain Authority ranking on page 1, that’s your green light to target that keyword.

Link to the Tool: UbersSuggest

3. WordStream Free Keyword Tool

wordstream interface

WordStream is owned by LocaliQ and is technically a PPC (Pay-Per-Click) tool, but it is fantastic for quick SEO brainstorming.

My Experience: I use WordStream when I have “writer’s block.” If I need a quick list of related topics or variations of a keyword without logging into a complex dashboard, this is my go-to.

Pros:

 

Fast & Simple: No complex setup. You just type a word and get a list.

 

Niche Grouping: It does a great job of suggesting related industries or niches you might not have thought of.

 

Opportunity Score: It gives a simple score to help you identify “low hanging fruit.”

Cons

 

Limited Data: It doesn’t give as much deep technical data (like backlink analysis) as Ubersuggest.

 

One-Dimensional: It’s strictly for finding keywords, not for analyzing competitors or site health.

Pros
  • Fast & Simple: No complex setup. You just type a word and get a list.

  • Niche Grouping: It does a great job of suggesting related industries or niches you might not have thought of.

  • Opportunity Score: It gives a simple score to help you identify “low hanging fruit.”

Cons
  • Limited Data: It doesn’t give as much deep technical data (like backlink analysis) as Ubersuggest.

  • One-Dimensional: It’s strictly for finding keywords, not for analyzing competitors or site health.

Best For:

 

Quick Brainstorming. Use this when you are in the early stages of a blog post and need to generate a list of 10-20 topic ideas fast.

Link to the Tool: Wordstream

Which one should you use?

If you want to…

Get new topic ideas fast – WordStream

Check if a keyword makes money (Ads) – Google Keyword Planner

 Analyze competitors on Page 1 – Ubersuggest


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