Free Keyword Research Tools (2026): What's Actually Free

You don’t need to pay for keyword research to start — but you do need to know exactly where each tool’s “free” ends, because most cap you within about three searches a day. After eleven years doing this, here’s the honest list: what’s genuinely free in 2026, the exact limit on each, which ones quietly stopped being free, and a complete workflow that costs nothing.

The free limits, at a glance

This is the table I wish existed when I was starting. Limits change often — these were checked in July 2026, and I’d re-check any figure you’re about to depend on.

Free keyword research tools and their exact 2026 limits

Tool	Free limit	Best for
Google Search Console	Unlimited, free forever	The real queries you already rank for — start here
Google Keyword Planner	Unlimited, but volume in ranges	Volume and CPC across any niche, straight from Google
Google Trends	Unlimited	Seasonality and whether a topic is rising or dying
Keyword Surfer (Chrome)	Unlimited, genuinely free	Volumes overlaid on Google as you browse
Ahrefs Free Keyword Generator	~100 ideas per search, no login	Fast idea dumps with volume and difficulty
Ahrefs Webmaster Tools	Free for sites you verify	Up to 1,000 of your own keywords and backlinks
Semrush free account	10 searches/day, 10 results each	Sampling real KD, intent and clustering	Try the free account→
Bing Webmaster Tools	Free	Actual volume data plus your own Bing performance
AnswerThePublic	3 searches/day	Question and modifier discovery
AlsoAsked	3 credits/day	People Also Ask trees and intent mapping
Ubersuggest	3/day web, ~40/day extension	Casual lookups via the extension

The details that actually matter

A few limits are more subtle than a number, and getting them wrong wastes your time:

• Google Keyword Planner shows ranges, not real numbers — unless you’re actively spending on ads. Without a live, spending campaign you see buckets like “1K–10K.” That’s deliberate tiering, not a bug. It’s still useful for relative comparison; it’s useless for forecasting.
• Google Search Console is the most underrated free keyword tool there is. If you have a site with any history, it shows the queries you actually rank for — including everything sitting on page two, ready to be pushed up. That’s the single highest-return free data source, and it’s your own data, not an estimate.
• Ahrefs Webmaster Tools is the most underrated free tier, full stop. Verify a site you own and you get up to 1,000 keywords and 1,000 backlinks — vastly more than the public free checker.
• Semrush’s free account is 10 searches per day across all tools combined, not per tool. The gotcha: clicking a keyword from the Keyword Magic Tool through to Keyword Overview burns two of your ten. Plan your clicks.
• KeywordTool.io gives you suggestions, not volume. Search volume, CPC and competition are paid-only. It’s widely mis-described as a free volume tool.
• Bing Webmaster Tools is consistently overlooked and includes genuine keyword research with real volume figures. Bing is small, but the data is free and the trends usually track Google.

One that changed: Keywords Everywhere, for years the free extension, moved to a paid credit model back in 2023. Plenty of “free tools” lists still include it. It’s a decent tool — it just isn’t free, and a single Google search can burn 20–30 credits.

Can you use ChatGPT for keyword research?

Partly — and the distinction matters, because this is where a lot of 2026 advice is quietly wrong.

What AI chatbots are genuinely good at: generating seed ideas, grouping a messy keyword list into clusters, labelling search intent, drafting question variations, and spotting angles you hadn’t considered. For that, they’re free and fast.

What they’re bad at — and you must not trust: search volume, keyword difficulty, CPC. Ask an LLM for the monthly search volume of a term and it will produce a confident, specific, invented number. There’s no live search-volume database behind it. Use AI for the thinking, never for the metrics.

Worth noting too: keyword research itself is shifting, because a growing share of searches are answered without a click. Before committing to a term, it’s now worth checking whether the results are dominated by an AI Overview — I covered the consequences of that in will AI Overviews kill affiliate sites? and how the discipline is changing in how AI is changing keyword research.

The free tools I built

While we’re on free: I make a small set of free tools aimed at the newer half of search — getting found by AI answer engines, not just Google. Not classic keyword-volume tools, but a genuinely useful complement:

• The Citability Scorer grades how quotable a page is for ChatGPT, Perplexity and friends.
• The GEO Tool Finder points you to the right AI-visibility tool in about a minute.
• The AI Crawler Checker tells you whether the AI bots can even reach your site.

All free, no signup.

A complete zero-cost workflow

Free tools work fine if you sequence them properly. This is the order I’d actually use:

1. Seed from your own data. Google Search Console for an existing site; Google Autocomplete and Trends for a brand-new one.
2. Expand the list. Ahrefs Free Keyword Generator (~100 ideas per search) plus your 10 daily Semrush searches, spent deliberately.
3. Harvest the questions. AlsoAsked and AnswerThePublic (3/day each) plus the live People Also Ask box.
4. Collect volume passively. Keep Keyword Surfer running while you browse Google — unlimited, no cap, no clicks wasted.
5. Sanity-check the numbers. Cross-reference Keyword Planner ranges and Bing Webmaster Tools. Expect the tools to disagree; use them for relative ordering, never absolute forecasts.
6. Judge difficulty by reading the SERP yourself. Free KD scores are unreliable. Look at who actually ranks — if page one is forums, Reddit and thin pages, you can win it regardless of what a score says.
7. Confirm intent from the SERP format. If page one is all product pages, don’t write a blog post.
8. Mine Reddit for real phrasing. It’s how people actually describe the problem, and AI engines cite Reddit heavily.
9. Track it in a free Google Sheet and measure results in Search Console.

That covers the vast majority of what a growing site needs, for nothing.

Where paying starts to pay off

Free tools give you ideas; paid tools give you prioritisation. The specific things no free tool does well:

• Reliable keyword difficulty at scale
• Competitor content-gap analysis (what they rank for and you don’t)
• Clustering hundreds of keywords into a content plan automatically
• Historical trend data

Daily caps of 3–10 searches are workable for a 20-post plan and hopeless for a 500-page site. When you cross that line, one paid tool saves hours a week. The one I use is Semrush — and its free account lets you test the depth before paying. Its Keyword Magic Tool is where free lists turn into a real content plan.

Try the free Semrush account→

For the competitor side — seeing exactly what rivals rank for — see the Organic Research guide. If you’re weighing whether a paid plan is worth it at all, how to use Semrush for free covers what you can do without paying a cent.

Frequently asked questions

What is the best free keyword research tool in 2026?

For a site with existing content, Google Search Console is the best free option — it shows the real queries you already rank for, using your own data rather than estimates. For brand-new sites, Google Keyword Planner plus the Ahrefs Free Keyword Generator is the strongest free combination, and Keyword Surfer is the best genuinely unlimited free tool.

Is Google Keyword Planner free, and why does it show ranges?

It is free with a Google Ads account, but it only shows broad volume ranges such as "1K–10K" unless you have an active, spending ad campaign. That is deliberate tiering by Google, not a fault. The ranges are fine for comparing keywords relatively but not for forecasting traffic.

Can ChatGPT do keyword research?

Partly. AI chatbots are genuinely useful for generating seed ideas, clustering keywords, labelling search intent and drafting question variations. They are not reliable for search volume, keyword difficulty or CPC — there is no live volume database behind them, so they will invent confident but fabricated numbers. Use AI for thinking, not for metrics.

Is Ubersuggest still free?

Partly. The free web tier is limited to about 3 searches a day, while the Chrome extension allows roughly 40. For anything heavier it is a paid tool.

Are Keywords Everywhere and AnswerThePublic still free?

Keywords Everywhere is no longer free — it moved to a paid credit model in 2023, though many outdated lists still include it. AnswerThePublic still has a free tier but limits you to about 3 searches per day, refreshed daily.

Can I do keyword research without paying at all?

Yes. Combining Google Search Console, Keyword Planner, Google Trends, Keyword Surfer, the Ahrefs free generator and a question tool such as AlsoAsked covers most of what a growing site needs. You only need a paid tool once you want reliable keyword difficulty at scale, competitor gap analysis or automatic clustering.

Does Semrush have a free version?

Yes — a free account with 10 searches a day across all tools, 10 results per report and one project, with no credit card required. It is limited, but enough to sample real keyword difficulty, intent data and the Keyword Magic Tool before deciding whether a paid plan is worth it.