If you are just starting out with SEO, keyword research is the very first skill you need to master. But most of the popular tools — like Ahrefs and SEMrush — cost anywhere from $99 to $449 per month. That is a tough bill for a beginner.
The good news? There are genuinely powerful free keyword research tools that can get you ranking on Google without spending a single dollar. In this guide, I have tested and ranked the best free keyword research tools available in 2025 so you know exactly which ones are worth your time.
What Is Keyword Research and Why Does It Matter?
Keyword research is the process of finding the exact words and phrases people type into Google when they are looking for something. When you write blog posts or create website content around those specific phrases, Google is much more likely to show your page in the search results.
For example, instead of writing a blog post titled “My Tips for Cooking”, you would research and find that people actually search for “easy dinner recipes for beginners” — and write your post around that phrase instead.
Good keyword research means more organic traffic, more ad revenue, and more readers — all for free.
What to Look for in a Free Keyword Research Tool
Before diving into the list, here is what makes a keyword research tool genuinely useful for beginners:
- Search volume data — how many people search for that keyword per month
- Keyword difficulty score — how hard it is to rank on page 1
- Related keyword suggestions — so you can find easier variations
- Search intent insights — whether people want information, a product, or a service
- Ease of use — a clean interface that does not overwhelm beginners
Now, let’s get into the tools.
1. Google Keyword Planner — Best Overall Free Tool
Best for: Getting real search volume data straight from Google
Google Keyword Planner is the most reliable free keyword research tool available because the data comes directly from Google itself. It was built for Google Ads advertisers, but bloggers and SEO beginners can use it completely free.
What You Can Do With It
- Discover new keyword ideas based on a seed keyword or your website URL
- See monthly search volume ranges for any keyword
- Find related keywords you might not have thought of
- Check which keywords have high advertiser competition (a sign of commercial value)
Pros
- 100% free with a Google account
- Data comes directly from Google — the most accurate available
- Shows keyword trends over time
- Covers every country and language
Cons
- Search volumes are shown as ranges (e.g., 1K–10K) unless you run an active ad campaign
- Does not show keyword difficulty scores
- Interface is designed for advertisers, not bloggers
How to Access It
Create a free Google account, go to ads.google.com, click “Tools” and select “Keyword Planner”. You do not need to spend any money on ads to use it.
Verdict: The best starting point for any beginner. Always check a keyword here before writing about it.
2. Ubersuggest — Best for Beginners Who Want All-in-One Data
Best for: Getting keyword difficulty, volume, and content ideas in one place
Ubersuggest, created by Neil Patel, is one of the most beginner-friendly keyword tools available. The free version gives you a limited number of daily searches but includes enough data to do solid keyword research without paying anything.
What You Can Do With It
- Get keyword suggestions, search volume, and difficulty scores
- See the top-ranking pages for any keyword and analyse why they rank
- Find content ideas based on what is already performing well
- Check your own website’s SEO health for free
Pros
- Very clean and easy-to-understand interface
- Shows keyword difficulty as a simple score out of 100
- Displays CPC (cost per click) data — useful for AdSense targeting
- Gives competitor analysis data
Cons
- Free plan limits you to 3 searches per day
- Some data can be slightly less accurate than paid tools
- Advanced features require a paid subscription
Verdict: The best all-in-one free tool for absolute beginners. Start here if you want keyword difficulty scores without paying.
3. Google Search Console — Best for Existing Websites
Best for: Discovering keywords your website already ranks for
If your website has been live for more than a few weeks, Google Search Console is an absolute goldmine. It shows you the exact keywords people are already using to find your website — including ones you did not even target deliberately.
What You Can Do With It
- See which keywords are bringing visitors to your site
- Check your average position for each keyword
- Identify keywords where you rank on page 2 (positions 11–20) — these are easy wins
- Monitor your site’s overall health and indexing status
Pros
- Completely free with no usage limits
- Data comes directly from Google — 100% accurate
- Shows click-through rates for each keyword
- Helps you find “almost ranking” keywords to optimise further
Cons
- Only works for your own website
- Does not help you find new keywords you have never targeted
- Requires ownership verification of your site
Verdict: Essential for any website owner. Use it alongside Keyword Planner for the best results.
4. AnswerThePublic — Best for Finding Question-Based Keywords
Best for: Discovering what questions people are actually asking on Google
AnswerThePublic visualises all the questions, comparisons, and prepositions people type around a topic. It is incredibly useful for writing blog posts because question-based keywords (“how to”, “what is”, “why does”) tend to have low competition and high search intent.
What You Can Do With It
- Find hundreds of question-based keyword variations instantly
- Discover “vs” and “comparison” keywords (great for software review posts)
- Identify preposition keywords like “keyword research for beginners” or “keyword research without tools”
- Export results as a CSV or image
Pros
- Free plan gives 3 searches per day
- Brilliant for generating blog post ideas
- Visualisation makes it easy to spot patterns
- No account required for basic use
Cons
- No search volume data on the free plan
- Limited to 3 searches per day
- Some suggestions are obscure or irrelevant
Verdict: Perfect for content ideation. Use it when you need fresh blog post ideas or want to find long-tail question keywords.
5. Keyword Surfer (Chrome Extension) — Best for Quick On-the-Go Research
Best for: Getting keyword data right inside Google search results
Keyword Surfer is a free Chrome extension that shows search volume data directly inside Google’s search results page. You do not need to open a separate tool — just search on Google and the data appears alongside the results.
What You Can Do With It
- See monthly search volume for any keyword as you search
- Get related keyword suggestions in a sidebar
- View estimated traffic for any ranking page
- Check word count and on-page data for competitor articles
Pros
- Completely free with no daily limits
- Works passively while you browse Google
- Shows related keyword ideas in a sidebar
- No need to leave Google to do research
Cons
- Chrome only — does not work on Firefox or Safari
- Volume estimates are less accurate than dedicated tools
- No keyword difficulty scores
Verdict: Install this extension today. It makes every Google search a mini keyword research session.
6. Moz Keyword Explorer (Free Plan) — Best for Keyword Difficulty Scores
Best for: Getting reliable keyword difficulty scores without paying
Moz is one of the most trusted names in SEO, and its free plan gives you 10 keyword searches per month with full keyword difficulty scores, organic CTR data, and priority scores.
What You Can Do With It
- Get Moz’s keyword difficulty score (0–100)
- See organic CTR estimates — how likely people are to click on an organic result
- Find keyword suggestions with difficulty scores included
- Save keyword lists for later analysis
Pros
- Moz’s difficulty scores are highly respected in the SEO industry
- Includes organic CTR data most tools do not offer
- Saves keyword lists for organisation
- Clean and professional interface
Cons
- Only 10 free searches per month — very limited
- Requires a free account registration
- Best features require a paid subscription
Verdict: Use your 10 monthly searches wisely. Best reserved for checking difficulty on your most important target keywords.
7. Seo helping tools Keyword Density Tool — Best for On-Page Optimisation
Best for: Checking how well your content is optimised after writing
Once you have chosen your keyword and written your blog post, you need to check whether you have used it enough times — and not too many times. Our free Keyword Density tool does exactly this.
What You Can Do With It
- Paste any text and instantly see your keyword density percentage
- Check whether your main keyword appears at the ideal 1–2% frequency
- Identify over-optimised content that could trigger a Google penalty
- Analyse competitor content to see how they structure their keyword usage
Pros
- Completely free with no account required
- Instant results — no waiting
- Available directly on seohelpingtools.com
- Works for any language
Cons
- Analyses content you paste in — does not crawl live URLs
- Does not provide search volume data
Verdict: Use this after writing every blog post to make sure your keyword density is in the ideal range.
How to Use These Free Tools Together — A Beginner Workflow
Here is the exact step-by-step process for finding and validating a keyword completely for free:
Step 1 — Generate ideas with AnswerThePublic Type your broad topic (e.g., “keyword research”) and collect 10–20 question-based keyword ideas.
Step 2 — Check volume with Google Keyword Planner Paste your keyword ideas into Keyword Planner to see which ones get the most monthly searches.
Step 3 — Check difficulty with Ubersuggest Use your 3 daily free searches to check keyword difficulty. Target keywords with a difficulty score below 40.
Step 4 — Browse Google with Keyword Surfer active Search your chosen keyword on Google with the Keyword Surfer extension on. Look at what the top results are doing.
Step 5 — Write your content Write a blog post targeting your chosen keyword. Aim for at least 1,000 words.
Step 6 — Check density with seohelpingtools.com Paste your finished post into the Keyword Density tool and confirm your keyword appears at the right frequency.
Quick Comparison: Free Keyword Research Tools at a Glance
| Tool | Search Volume | Difficulty Score | Daily Limit | Best For |
| Google Keyword Planner | Yes | No | Unlimited | Volume data |
| Ubersuggest | Yes | Yes | 3 searches | All-in-one |
| Google Search Console | Yes (your site) | No | Unlimited | Existing sites |
| AnswerThePublic | No | No | 3 searches | Content ideas |
| Keyword Surfer | Yes | No | Unlimited | Passive research |
| Moz Keyword Explorer | Yes | Yes | 10/month | Difficulty scores |
| seohelpingtools.com | No | No | Unlimited | On-page checking |
Frequently Asked Questions
Is Google Keyword Planner really free?
Yes, completely. You need a free Google account and technically a Google Ads account, but you do not need to spend any money on ads to access Keyword Planner.
How many keywords should I target in a single blog post?
For beginners, focus on one primary keyword and 2–3 related secondary keywords per post. Trying to target too many keywords in one post often results in ranking for none of them.
What keyword difficulty score should beginners target?
As a beginner, aim for keywords with a difficulty score of 40 or below (on a 0–100 scale). Scores below 20 are the easiest wins for new websites.
How long should a blog post be for SEO?
Google tends to rank longer, more comprehensive content. Aim for a minimum of 1,000 words, with 1,500–2,500 words being the sweet spot for most SEO topics.
Can I do keyword research without any tools?
Yes — Google’s autocomplete feature and “People Also Ask” section are technically free keyword research tools. They show you exactly what people are searching for right now.
Final Thoughts
You do not need to spend hundreds of dollars to do effective keyword research. The free tools listed above — especially Google Keyword Planner, Ubersuggest, and Google Search Console — give you everything you need to find keywords, check competition, and start ranking on Google.
The key is to use them together in the workflow described above, rather than relying on just one tool. Each has its strengths, and combining them gives you a free toolkit that rivals many paid subscriptions.Start with Google Keyword Planner today, install the Keyword Surfer extension, and run your first blog post through our Keyword Density Tool once you are done writing.
