You don’t need a paid subscription to find good keywords
Paid suites are faster and they bundle everything into one screen, but almost every number they sell you is built on top of free, public data that you can reach directly. If your budget is zero — or you just want to validate an idea before committing to a tool — the seven methods below will get you real search-term data, real demand signals, and a usable list of topics. The trade-off is honest: free methods take more clicks, give you fewer metrics at once, and rarely hand you a clean keyword difficulty score. What they lack in polish they make up for in being free and, in two cases, more authoritative than anything you can buy.
A quick note on how to use this. Methods 1–2 give you data straight from Google about your own and others’ demand. Methods 3–5 are idea-generation engines — they tell you what people actually ask. Method 6 borrows the paid tools’ own numbers without paying, and method 7 covers the two search engines marketers forget. Run them in roughly that order and you’ll have a strong list without spending anything.
1. Google Keyword Planner — first-party volume, for free
Keyword Planner lives inside Google Ads, and you can use it without ever running an ad. Create a free Google Ads account, switch to Expert mode (don’t let it push you into building a campaign), and open Tools → Keyword Planner. The “Discover new keywords” box takes a seed like cold brew coffee and returns a few hundred related terms; “Get search volume and forecasts” takes a list you already have and sizes it.
The catch worth knowing up front: accounts with no ad spend see volume as broad ranges — 10K–100K rather than a precise figure — and the “Competition” column measures advertiser bidding, not how hard a term is to rank for organically. People misread that constantly. What makes it indispensable anyway is that the numbers come from Google’s own query logs, not a third party’s estimate, and the top-of-page bid ranges are a genuinely useful read on commercial intent. We cover the nuances in our comparison of dedicated tools like Semrush, but as a free demand check, nothing beats it.
Do: use it to confirm a term has real volume before you build a page. Don’t: treat the Competition rating as a difficulty score — it’s about ads.
2. Google Search Console — the keywords you already rank for
This is the most underused free source there is, and it’s the only one reporting on your site specifically. If you have any site at all, verify it in Search Console and open the Performance report. The Queries tab shows the exact searches that already bring you impressions and clicks, with real position and click-through data — not an estimate.
The gold is hiding in a specific filter. Sort by impressions, then look for queries where you get lots of impressions but a low average position (say, 8–20) or a weak click-through rate. Those are terms Google already associates with you but where you’re not winning yet — the cheapest wins in all of SEO. A page ranking 12th for how to descale an espresso machine that you barely mention is a clear signal to write a dedicated piece. You can also spot the long, specific phrases you never targeted on purpose; those are some of the best long-tail keywords you’ll find anywhere because you already have proof of relevance.
3. Google Autocomplete — mining real query fragments
The suggestions that drop down as you type are aggregated from real searches, which makes them a free, live feed of demand. Type your seed and watch what completes it: cold brew coffee yields cold brew coffee ratio, …recipe, …vs iced coffee, and so on.
Two tricks multiply the output. First, append a letter — cold brew coffee a, then b, c — to force fresh suggestions for each. Second, use the wildcard: put an asterisk where a word would go, like cold brew coffee * water, and Google fills the gap. Prepositions are powerful too — cold brew coffee for, cold brew coffee without, cold brew coffee with each surface a different cluster of intent. It costs nothing and the data is as real as it gets; the only limit is that you get phrases, not volumes.
4. People Also Ask — the question goldmine
Run a search and you’ll usually see a “People also ask” box with expandable questions. Click one and it loads more, so a single query can unfurl into dozens of real questions Google has clustered around your topic — for example, searching cold brew coffee surfaces Is cold brew stronger than regular coffee? and How long does cold brew last in the fridge?
These map directly to subheadings, FAQ sections, and entire articles, and because Google groups them by topic, they’re a free read on how the search engine understands the subject. Pay attention to the phrasing — the exact wording of a PAA question is often a better H2 than anything you’d write yourself, because it mirrors how people actually ask. This is where understanding search intent pays off: a “how” question wants instructions, a “best” question wants comparison, and matching that shape is half the battle.
5. Google Trends — direction, seasonality, and breakouts
Trends doesn’t give absolute volume; it gives relative interest over time on a 0–100 scale, and that’s exactly what the other methods miss. Use it for three jobs. First, compare two terms head-to-head — cold brew versus nitro coffee — to see which way the wind is blowing. Second, read seasonality: cold brew predictably spikes every summer, which tells you when to publish. Third, and most valuable, scroll to Related queries and switch from “Top” to Rising. Terms marked “Breakout” are surging with little established competition — the closest thing to a free early-warning system for emerging topics.
Do: set the timeframe to at least 12 months so you don’t mistake a blip for a trend. Don’t: use Trends to decide whether a term has enough volume to bother with — that’s Keyword Planner’s job.
6. Free tiers of paid tools — borrowing their numbers
Most commercial tools offer a capped free tier or a free account, and stacked together they give you difficulty scores and volume estimates the methods above can’t. The usual approach is to use each one’s daily free allowance for spot-checks rather than bulk research.
| Free option | What you realistically get | Best for |
|---|---|---|
| Browser autocomplete extensions | Volume/CPC overlaid on Google searches (free credits, then paid) | Quick checks while you browse |
| Question-research tools (free searches per day) | Visual maps of questions and prepositions around a seed | Content briefs and FAQs |
| SEO suite free accounts | A limited number of keyword lookups with difficulty and volume per day | Sanity-checking a shortlist |
The honest limitation is the daily cap — free tiers are designed to be just generous enough to make you want the paid version. That’s fine for validating ten or twenty candidates a day. If you find yourself bumping the limit constantly, that friction is the signal that a paid plan would pay for itself; the gentlest on-ramp tends to be an affordable suite like Mangools, and our roundup of the best keyword research tools compares where the free tiers end and the paid value begins.
7. YouTube and Amazon autocomplete — the platforms marketers skip
Google isn’t the only search box with a suggestion engine, and the other two are arguably more valuable because their suggestions carry clearer intent.
YouTube
YouTube is the second-largest search engine, and its autocomplete reflects what people want to watch, which skews heavily toward how-to and tutorial intent. Type cold brew into the YouTube search bar and you’ll get cold brew recipe, cold brew at home, cold brew vs iced coffee — phrasing that often differs from Google and signals demand for video. Even if you never make a video, these terms tell you which sub-topics people prefer to learn visually, which is useful for any content plan.
Amazon
Amazon’s autocomplete is pure buyer intent — nobody types into Amazon to read an article. Seed it with cold brew and you’ll see cold brew maker, cold brew concentrate, cold brew coffee filter: product-shaped, transactional phrases. For anyone selling physical goods, running affiliate content, or writing commercial reviews, this is the fastest free way to find terms attached to a wallet. The suggestions are ranked by what shoppers actually search and convert on, so the order itself is a signal.
Putting the free stack together
No single free method is complete, but the gaps line up neatly. Use Autocomplete, People Also Ask, and Trends to generate ideas and questions; use YouTube and Amazon to add video and buyer intent; then run the survivors through Keyword Planner for first-party volume and a free tool tier for a difficulty read. Finally, let Search Console tell you which of those terms you’re already close to winning. That sequence costs nothing and produces a prioritized list that’s well within striking distance of what a paid workflow delivers.
The one thing free methods won’t do is save you time at scale. When you’re researching dozens of topics a week and clicking through five tabs per keyword starts to hurt, that’s the moment a paid tool earns its fee — not a day sooner. Start free, learn what the data looks like, and upgrade only when the friction, not the marketing, tells you to.