Introduction: Why Keyword Research Still Matters More Than Ever
Let me be honest with you. When I first started writing content — back when I was hunched over a laptop in a flat in Manchester, trying to figure out why nobody was reading my blog — I had no idea what keyword research even meant.
I thought good writing was enough. It wasn’t.
Then I moved to the US for a few years, worked with digital marketing teams in New York and Austin, and slowly came to understand something that changed everything: it doesn’t matter how good your content is if nobody can find it.
Keyword research is the backbone of SEO. It tells you what real people are typing into Google, what questions they’re asking, and what problems they’re trying to solve. When you know that, you can write content that shows up exactly when someone needs it.
The good news? You don’t need to spend hundreds of dollars a month on fancy tools. There are genuinely powerful free keyword research tools out there — and in this guide, I’m going to walk you through every single one worth your time.
Whether you’re a blogger, a small business owner, a freelancer, or just someone trying to grow an audience online, this guide is for you.
What Is Keyword Research and Why Do You Need It?
Before we dive into the tools, let’s get one thing straight: keyword research is simply the process of finding out what words and phrases people use when they search online.
When someone in Birmingham types “how to fix a leaky tap” or someone in Chicago searches “best running shoes for flat feet,” they’re using keywords. If you write content around those exact phrases, your page has a chance of appearing in front of those people.
Without keyword research, you’re essentially guessing. And guessing in SEO is expensive — you waste months writing content that never ranks.
With the right keywords, even a brand new website can attract hundreds or thousands of visitors per month. Free tools make this possible for anyone.
What Makes a Keyword Research Tool Actually Good?
Not every tool that calls itself a “keyword research tool” is worth your time. Here’s what I look for — and what you should look for — in a genuinely useful free keyword tool:
- Search volume data — how many people are searching for that keyword per month
- Keyword difficulty — how hard it is to rank for that keyword
- Related keyword suggestions — ideas for other keywords you might not have thought of
- Search intent signals — is this keyword informational, commercial, or transactional?
- SERP overview — what’s currently ranking on page one?
Now let’s get into the tools themselves.
1. Google Keyword Planner — The Original Free Tool
Best for: Beginners, bloggers, business owners
Let’s start with the most obvious one. Google Keyword Planner has been around since the early days of Google Ads, and despite being technically built for advertisers, it remains one of the most reliable free keyword research tools available.
What It Does
You type in a keyword or a website URL, and Google gives you a list of related keyword ideas along with estimated monthly search volumes and competition levels.
What I Like About It
The data comes directly from Google itself — which means it’s as close to the truth as you’re going to get without paying for a premium tool. You can filter results by country, language, and date range. You can also see seasonal trends, which is incredibly useful if you’re planning content calendars.
The Catch
To access the full search volume data (not just ranges like “1K–10K”), you technically need to run an active Google Ads campaign. However, even with the range estimates, it’s still highly useful for identifying high-volume keyword opportunities.
How to Use It
Go to ads.google.com, create a free account, navigate to Tools → Keyword Planner, and start with “Discover new keywords.” Type in your main topic or a competitor’s URL and let Google do the rest.
Pro tip: Look for keywords with high monthly searches but low competition. These are your golden opportunities.
2. Google Search Console — Probably the Most Underrated Tool
Best for: Existing website owners, content optimisers
If you already have a website with some traffic, Google Search Console is hands-down one of the most powerful free tools available — and most people barely scratch the surface of what it can do.
What It Does
Search Console shows you exactly which keywords your website is already ranking for, how many impressions and clicks those keywords are getting, and your average position in search results.
Why It’s a Goldmine
Here’s something I learned working with a content team in Austin: the keywords you’re already ranking for on page two or three are your easiest wins. You’re already visible — you just need a small push to get to page one.
Search Console tells you precisely which keywords are in positions 11–20. Update those pages with better content, more depth, and stronger internal links, and you can often move them to the top five without creating anything new.
How to Access It
Go to search.google.com/search-console. You’ll need to verify your website. Once connected, go to Performance → Search Results, and filter by “Queries.” Sort by position to find your page two opportunities.
3. Ubersuggest — Neil Patel’s Free SEO Powerhouse
Best for: Content creators, small business owners, bloggers
Ubersuggest is one of my personal favourites for free keyword research, and I’ve recommended it to dozens of clients over the years — both in the UK and in the US.
What It Does
Type in any keyword, and Ubersuggest gives you:
- Monthly search volume
- SEO difficulty score
- Paid difficulty (for PPC)
- Cost per click (CPC)
- Related keyword ideas
- Content ideas based on what’s already ranking
- Backlink data for top-ranking pages
What Makes It Special
The content ideas section is genuinely brilliant. It shows you real blog posts that have ranked for your keyword and tells you how many backlinks and social shares they got. This helps you understand not just what to write about, but how much effort it’ll take to compete.
Free Tier Limitations
Ubersuggest offers three free searches per day without signing in, and more if you create a free account. For light keyword research, this is usually plenty.
How to Use It
Go to neilpatel.com/ubersuggest. Type in your seed keyword. Start with the Overview tab, then move to Keyword Ideas to find long-tail variations.
Long-tail keywords (phrases with three or more words) are where beginner websites win. They have lower competition and more specific intent.
4. AnswerThePublic — Understand What People Are Really Asking
Best for: Content strategists, bloggers, anyone writing educational content
AnswerThePublic is one of those tools that completely changes the way you think about content. I first used it in a coffee shop in London when I was trying to plan a content strategy for a health and wellness client, and I’ve been hooked ever since.
What It Does
You type in a keyword, and AnswerThePublic pulls real questions, comparisons, prepositions, and related searches that people are actually typing into Google. The visual “wheel” layout might look a bit overwhelming at first, but the data underneath it is gold.
For example, type in “coffee” and you’ll get questions like:
- “Why does coffee make me tired?”
- “How does coffee affect sleep?”
- “Coffee vs tea for energy”
- “Coffee without milk”
These aren’t made-up questions. These are real things real people are searching for.
Why This Matters for SEO
Google’s algorithm increasingly rewards content that directly answers specific questions. This is partly because of voice search (people ask full questions when they speak) and partly because of Google’s “helpful content” updates that prioritise depth and relevance.
AnswerThePublic essentially hands you a list of H2 headings for your articles.
Free Tier
The free version allows a limited number of searches per day — typically three. That’s enough for planning one or two pieces of content at a time. The paid version removes the limit, but for most bloggers and small businesses, free is fine.
5. Keyword Surfer — The Chrome Extension That Changes Everything
Best for: Anyone who does research directly in Google
Keyword Surfer is a free Chrome extension, and it’s one of those tools you install once and immediately wonder how you ever lived without it.
What It Does
Once installed, Keyword Surfer overlays keyword data directly onto your Google search results page. Every time you do a Google search, you’ll see:
- Monthly search volume for your query
- Similar keywords in the sidebar with their own search volumes
- Word count and estimated organic traffic for each result on the page
Why It’s Brilliant for Researchers
You never have to leave your search page to get keyword data. You’re browsing Google, you see a topic, you instantly know how many people search for it. It makes the whole process feel natural and effortless.
This is especially useful for writers and journalists who do a lot of research and want to spot keyword opportunities as they browse.
How to Install It
Search “Keyword Surfer Chrome extension” and install it from the Chrome Web Store. It’s completely free.
6. Soovle — Multi-Platform Keyword Research in One Place
Best for: Creators who publish on multiple platforms (YouTube, Amazon, Bing, etc.)
Most keyword tools focus exclusively on Google. Soovle is different — and that’s exactly why it deserves a spot on this list.
What It Does
Soovle pulls autocomplete suggestions from multiple platforms simultaneously:
- YouTube
- Bing
- Amazon
- Wikipedia
- eBay
You type a keyword in the middle of the screen, and suggestions from all these platforms appear around it in real time.
Why This Is Useful
If you’re a YouTuber, knowing what YouTube users search for is more valuable than knowing Google data. If you sell on Amazon, knowing what Amazon shoppers search for is priceless. Soovle gives you all of this in one place, for free.
The Limitation
Soovle doesn’t show search volumes — just autocomplete suggestions. So you’ll want to pair it with another tool (like Ubersuggest or Google Keyword Planner) to validate the volume behind those suggestions.
7. Google Trends — Timing Your Content Perfectly
Best for: Seasonal content, trending topics, news-based content
Here’s something a lot of SEOs overlook: timing matters. Publishing a piece of content at the wrong time — even if the keyword is great — can mean it peaks in search interest before your page has had time to rank.
Google Trends solves this problem.
What It Does
Google Trends shows you how interest in a particular keyword has changed over time. You can see seasonal spikes, long-term growth or decline, and compare multiple keywords against each other.
Real-World Examples
If you’re writing about “Christmas gift ideas,” you can see that searches spike dramatically in November and December. That means you should publish your content in October to give it time to rank before the surge hits.
If you’re comparing “Instagram vs TikTok,” you can see how search interest in each platform has grown or declined over the past five years.
Extra Features
Google Trends also shows:
- Related rising queries (emerging topics you can get ahead of)
- Geographic data (which regions search for something the most)
- Breakout trends (searches that have increased by 5000%+ recently)
For UK and US content creators: You can filter by country, which is incredibly useful if you’re targeting a specific market.
8. Ahrefs Free Keyword Generator — Premium Quality, Free
Best for: Anyone who wants serious keyword data without paying
Ahrefs is one of the most respected names in SEO. Their full tool costs hundreds of dollars per month. But their free keyword generator is genuinely impressive — and completely free.
What It Does
Go to ahrefs.com/keyword-generator, type in a keyword, select your country, and you’ll get up to 150 keyword ideas, each with:
- Monthly search volume
- Keyword difficulty score
- Whether it’s a question-based keyword
Why the Difficulty Score Matters
Ahrefs has one of the most reliable keyword difficulty scores in the industry. A score of 0–10 means low competition — great for new websites. A score above 30 starts to get competitive. Above 50, you’ll need serious backlinks to rank.
As a new or small website, targeting keywords with difficulty below 20 gives you the best chance of ranking on page one.
Limitation
The free version shows the first 100–150 keywords and doesn’t include the full SERP analysis or backlink data. But for keyword discovery, it’s excellent.
9. Moz Keyword Explorer — 10 Free Searches Per Month
Best for: Intermediate SEOs, small business owners
Moz is another heavyweight in the SEO world, and their Keyword Explorer tool offers 10 free searches per month — which is actually quite generous for light users.
What It Does
Each search gives you:
- Monthly search volume
- Difficulty score
- Organic CTR (click-through rate — how often people actually click the result)
- Priority score (a combined metric that factors everything together)
- Keyword suggestions and SERP analysis
The CTR Insight
This is something unique to Moz that I find really valuable. Some keywords get a lot of searches but low click-through rates — often because Google answers the question directly in the search results (through featured snippets, knowledge panels, etc.). Knowing the CTR helps you avoid keywords where even ranking #1 might not bring much traffic.
10. AlsoAsked — Map the Full Content Landscape
Best for: Content strategists, pillar page builders
AlsoAsked is a brilliant free tool built around Google’s “People Also Ask” feature — those question boxes that appear in almost every Google search result.
What It Does
Type in a keyword, and AlsoAsked maps out all the related questions people ask, organised into a visual tree that shows how questions branch out from your main topic.
This is incredibly useful for building topic clusters — a modern SEO strategy where you create one main “pillar” page about a broad topic and then create multiple supporting pages about subtopics, all linking back to the pillar.
Free Tier
Three free searches per day. Enough for planning purposes.
How to Use These Tools Together — A Simple Workflow
Having ten tools is great, but you need a system. Here’s the workflow I use and recommend:
Step 1: Brainstorm seed keywords Write down 5–10 broad topics related to your niche. These are your starting points.
Step 2: Expand with Ubersuggest and Ahrefs Free Generator Plug your seed keywords into both tools. Collect 30–50 keyword ideas.
Step 3: Check questions with AnswerThePublic and AlsoAsked Find the specific questions people ask around your topic. These become your H2 subheadings and FAQ sections.
Step 4: Validate with Google Keyword Planner Check monthly search volumes to prioritise which keywords to tackle first.
Step 5: Check timing with Google Trends Make sure your target keywords aren’t seasonal topics you’re publishing at the wrong time of year.
Step 6: Install Keyword Surfer Keep it running in the background while you research, so you’re always getting data passively.
Step 7: Track with Google Search Console Once your content is published, monitor it in Search Console. Look for keywords where you’re on page two and optimise those pages over time.
Common Keyword Research Mistakes to Avoid
In my years of working with writers and businesses on both sides of the Atlantic, I’ve seen the same mistakes over and over.
Chasing high-volume keywords as a new site. If you have a new website, targeting keywords with 50,000+ monthly searches is a waste of time. You’ll never rank. Go for keywords under 1,000 monthly searches with low difficulty. These are easier to rank for, and they add up.
Ignoring search intent. A keyword like “running shoes” could be someone wanting to buy, someone wanting advice, or someone looking for local shops. Make sure your content matches what the searcher actually wants.
Targeting one keyword per page. Modern SEO rewards content that covers a topic comprehensively. One page can rank for dozens of related keywords. Write for humans, cover the topic well, and you’ll naturally rank for many variations.
Never revisiting old content. Your search rankings change over time. Older posts that rank on page two can often be revived with a content refresh. Use Search Console regularly to find these opportunities.
Final Thoughts: Free Tools Are More Than Enough to Start
When I look back at my early days — struggling to get traffic, not understanding why my articles weren’t ranking — I wish someone had handed me this list.
The truth is, you don’t need to spend a single penny to do effective keyword research. The free tools covered in this guide — Google Keyword Planner, Search Console, Ubersuggest, AnswerThePublic, Ahrefs Free Generator, Keyword Surfer, Google Trends, Soovle, Moz, and AlsoAsked — give you everything you need to build a solid SEO strategy from scratch.
The key is consistency. Pick a few tools that fit your workflow, use them regularly, and keep learning. SEO isn’t a one-time thing — it’s an ongoing process of publishing, measuring, adjusting, and improving.
Start small. Target the easy keywords. Build your authority over time. And remember: the best time to start keyword research was yesterday. The second-best time is right now.
Quick Reference: Best Free Keyword Research Tools at a Glance
| Tool | Best For | Search Volume | Difficulty Score | Free Limit |
|---|---|---|---|---|
| Google Keyword Planner | Beginners | ✅ (ranges) | ❌ | Unlimited |
| Google Search Console | Existing sites | ✅ | ❌ | Unlimited |
| Ubersuggest | All-around use | ✅ | ✅ | 3/day |
| AnswerThePublic | Question keywords | ❌ | ❌ | 3/day |
| Keyword Surfer | In-SERP research | ✅ | ❌ | Unlimited |
| Soovle | Multi-platform | ❌ | ❌ | Unlimited |
| Google Trends | Timing & trends | ✅ (relative) | ❌ | Unlimited |
| Ahrefs Free Generator | Keyword ideas | ✅ | ✅ | 150 results/search |
| Moz Keyword Explorer | Intermediate SEO | ✅ | ✅ | 10/month |
| AlsoAsked | Content mapping | ❌ | ❌ | 3/day |