Keyword research is the least glamorous part of SEO, and it’s the part beginners skip first — usually because the tools everyone recommends cost $100+ a month. Here’s the part the tool vendors don’t advertise: Google itself gives you almost everything you need to research keywords for free. No trial, no credit card, and in most cases no sign-up at all.
I’ve done keyword research both ways, and the honest truth is that paid tools mainly buy you one thing: precise search-volume numbers. For a new or small website, that precision is overrated. What actually moves the needle is finding the phrases real people type, checking that demand exists, and writing the best answer. Every method below does exactly that, and every one of them is free.
The 6 Free Methods
1. Google Autocomplete: Real Searches, Straight From the Source
Start typing anything into Google’s search box and it finishes your sentence. Those completions aren’t guesses — Google’s own documentation says autocomplete predictions reflect real searches that have been done on Google, adjusted for language, location, and trending interest. That makes the search box the fastest free keyword list on the planet.
Here’s how to milk it:
- Seed + space. Type your topic and add a space. “sourdough” gives you “sourdough bread recipe”, “sourdough starter”, and so on.
- The alphabet trick. Type your seed, a space, then each letter a through z. “email marketing a”, “email marketing b” — each letter unlocks a fresh batch of completions. Tedious, but it surfaces long-tail phrases no tool hands you.
- Question words. Append who, what, where, when, why, and how to your seed. These are pure informational intent — perfect for blog posts.
- Prepositions. Add for, with, without, vs, near me. “laptop for”, “laptop vs” reveal comparison and commercial intent.
Two caveats. First, predictions shift with your location and search history, so use a private window for a cleaner read. Second, autocomplete tells you a phrase is searched — it doesn’t tell you how many people search it. Pair it with method 3 or 5 before betting a whole article on one phrase.
2. People Also Ask + Related Searches
Search your seed topic and look at two free features on the results page.
The People Also Ask box shows the exact follow-up questions searchers ask. Click a question and it expands with an answer — and more questions appear. Keep clicking and Google hands you a whole FAQ outline written by real search demand. These make excellent article subheadings; search engines literally tell you what sections your article should have.
Scroll to the very bottom for Related searches: eight or so phrases Google considers semantically tied to your query. Search one of them and you get another page of PAA questions and another eight related phrases. One seed topic, followed patiently, can generate dozens of keyword ideas in fifteen minutes.
The real power move: compare the questions across several related searches and note the ones that repeat. A question that appears under three different queries is a question with real demand behind it.
3. Google Trends: Validate Demand and Spot Rising Terms
Google Trends is completely free and needs no account. Type a term and it shows how search interest changed over time — plus, scrolling down, the two boxes that matter most for keyword research: Related topics and Related queries, each with a Top tab (most popular) and a Rising tab (fastest growing).
Use it for three jobs:
- Direction check. Is interest in your topic rising, flat, or dying? A keyword with falling interest is a bad bet no matter how good the article.
- Rising queries. The Rising tab is where new demand shows up first. A query marked “Breakout” grew enormously in the selected period — these are often underserved topics where a new article can rank fast.
- Term shootouts. Compare up to five terms side by side (“sofa” vs “couch” vs “settee”) and see which phrasing your audience actually uses. Write with the winner’s vocabulary.
The honest limitation: Trends shows relative interest on a 0–100 scale, not absolute search counts. A score of 100 doesn’t mean a hundred searches or a hundred thousand — it means the peak of that term’s own interest. Use it to compare terms and spot direction, not to count searches.
Read Google’s own guide to getting started with Trends if the interface is new to you.
4. Search Console’s Performance Report: Your Site’s Own Keyword Data
If you own a website, your best free keyword data is already sitting in Google Search Console’s Performance report — completely free for any verified site owner. It shows the actual queries your pages appeared for, plus clicks, impressions, click-through rate, and average position for each one.
This is gold for two reasons. First, Google tells you which queries almost work for you: sort by impressions and look for queries where you rank on page two (average position roughly 8–20) with decent impressions. Those pages are one content upgrade away from page one — rewrite the section that answers that query, and watch the position move.
Second, it reveals the vocabulary your audience uses, which often differs from yours. You might call it “email automation” while your visitors search “automatic email sender”. Write in their words and you stop fighting the algorithm.
Note: Search Console only records data from the day you verify your site — there’s no backfill. Set it up on day one of any new site so the data is waiting when you need it.
5. Google Keyword Planner: Real Volume Data, Free With One Catch
Keyword Planner is Google’s own keyword tool, and it’s free to use — the catch is that it lives inside Google Ads, so you need a Google Ads account. You do not need to run ads or spend money: create the account, skip the campaign setup, and open Tools → Keyword Planner.
Its Discover new keywords mode takes a seed term (or even your website’s URL) and returns hundreds of related keyword ideas with average monthly searches, competition level, and bid ranges. It’s the closest thing to a paid tool’s database that costs nothing.
The catch within the catch: accounts without ad spend see search volumes as broad ranges (like 1K–10K) instead of precise numbers. Treat the ranges as directional — they still reliably tell you which keywords are big, medium, and small, and that’s all you need to prioritize a content plan.
6. The Workflow: Turning Free Data Into a Content Plan
Methods are useless without a process. Here’s the one I’d hand a beginner, doable in a spreadsheet in an afternoon:
- Seed. Write down 5–10 topics your site is genuinely qualified to cover. Relevance beats volume — a small site wins by depth in a narrow lane.
- Expand. Run each seed through autocomplete (method 1) and the PAA/related-searches loop (method 2). Collect every phrase that fits your lane.
- Validate. Check each phrase’s direction in Trends (method 3) and its relative size in Keyword Planner (method 5). Drop anything clearly dying or irrelevant.
- Group by intent. Sort the survivors into clusters where one article could answer the whole cluster — “how to clean a coffee grinder”, “coffee grinder cleaning brush”, “descale coffee grinder” all belong on one page.
- Prioritize. Start with clusters where the current top results look weak — thin content, outdated posts, forums. That’s where a new page can actually win.
Do this once per quarter and you’ll never stare at a blank editorial calendar again.
What Free Methods Can’t Do
Honesty matters here, so let’s name the limits. Free methods won’t give you exact monthly search volumes — only ranges and relative interest. They won’t show you a competitor’s traffic or backlinks. And none of them, free or paid, tells you whether you can rank: that judgment comes from opening the top results for a keyword and asking whether you can genuinely write something better. If the top ten are all thin, outdated, or off-topic, that’s your opening. If they’re all authoritative and excellent, pick a different keyword — no tool changes that.
Frequently Asked Questions
Is free keyword research enough for a new website?
Yes — arguably it’s the right level of research for a new site. Paid tools add precision (exact volumes, competitor gaps), but a new site’s bottleneck is never “I didn’t know the exact search volume.” It’s “I didn’t know what to write.” The free methods above answer that question directly, from Google’s own data.
Is Google Keyword Planner really free?
Yes. It requires a Google Ads account, which is free to create, and you don’t need to run ads or spend anything. The trade-off: without ad spend, you see volume ranges (like 1K–10K) rather than exact numbers. For prioritizing topics, ranges are enough.
Can I do keyword research without signing up for anything?
Yes. Google Autocomplete, People Also Ask, Related searches, and Google Trends all work with no account and no sign-up. You only need accounts for Search Console (needs a Google account plus a website you own) and Keyword Planner (needs a Google Ads account).
How do I pick which keywords to write about first?
Start with keywords where three things are true: the topic fits what your site genuinely covers, the demand is real (autocomplete shows it, Trends isn’t declining), and the current top results are beatable (thin, outdated, or not quite answering the question). One strong article on a beatable keyword beats ten articles chasing competitive terms you’ll never rank for.
Keyword research gets you the right topics — but topics only rank on a technically healthy site. Make sure your robots.txt isn’t blocking anything it shouldn’t and that you’ve submitted your sitemap to Google before you publish your next article.
