---
title: "Best Free 20 Keyword Research Tools"
description: "Compare 20 free or free-tier keyword research tools, including practical use cases, access limits, official sources, and when a paid plan may matter."
answer_summary: "Compare 20 free or free-tier keyword research tools, including practical use cases, access limits, official sources, and when a paid plan may matter."
canonical: "https://nqz.ai/blog/best-free-20-keyword-research-tools"
published_at: "2026-08-02T06:48:33.381Z"
updated_at: "2026-09-12T13:09:43.708Z"
author: "nqzai Editorial Team"
category: "GEO"
tags: ["geo","aeo","ai-search","tools","comparison"]
image: "https://nqz.ai/blog/covers/best-free-20-keyword-research-tools.webp"
---

# Best Free 20 Keyword Research Tools

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Google Keyword Planner, Google Trends, and Google Search Console remain genuinely free with no hard search limits, though Keyword Planner only shows broad volume ranges unless you have active ad spend. Bing’s Keyword Research tool reports exact search volumes for free with no ad-spend gate. Ahrefs’ free Keyword Generator has no daily search cap but limits each search to roughly 100–150 ideas with rough volume only, while Semrush’s free account caps keyword tracking at 10 keywords and a handful of report requests per day — both push toward paid plans (Ahrefs from $29/month, Semrush from roughly $130/month) for full data.

The article’s core verdict: choose the most narrowly focused free tool based on the specific decision you need to make—Google’s properties for first-party search volume data, Bing’s tool for unlimited Bing-ecosystem research, and the paid-tier trials only when you need cross-engine competitive analysis or higher query quotas. For high-value pages, always validate free-tool findings against official documentation or your own analytics before acting.

Free tools are useful when they turn a keyword research question into evidence and a next action. “Free” can mean a public utility, a verified-owner plan, a limited quota, or a trial, so this comparison makes that distinction visible.

The cards below are designed for a lean team: each one states the best-fit job, the access model, the main limitation, and the point at which a paid workflow may become useful.

## Quick Answer

- If you're looking for first-party search volume data from Google → use Google Keyword Planner, Google Trends, or Google Search Console, because they remain genuinely free with no hard search limits.
- If you need unlimited free keyword data for the Bing ecosystem → use Bing Keyword Research, because it is the only major search engine with a truly unrestricted free tier.
- If you need deeper keyword data than the free tiers allow → move to Ahrefs (paid plans from $29/month) or Semrush (paid plans from roughly $130/month), because free access there is capped by per-search result limits or daily and keyword-tracking quotas, not by an unlimited free tier.

## How to choose a free keyword research tool

Direct answer: Start with the decision you need to make, then choose the narrowest tool that can answer it. Validate important findings against first-party data or official documentation before changing a high-value page or workflow.

01## Google Keyword Planner

Best for: keyword ideas and rough search volume

Google Ads' planning tool for keyword ideas and volume estimates; setup requires a Google Ads account but not an active ad campaign.

Access modelFree to use once a Google Ads account exists; without active ad spend, search volumes show as broad ranges rather than exact numbersResearch checkVerified against Google Ads' own help documentationEvaluate nextWhether broad volume ranges are precise enough, or you need a paid tool for exact figuresSource: Google Keyword Planner official site[Visit official site ↗](https://ads.google.com/home/tools/keyword-planner/)02## Google Trends

Best for: spotting rising and seasonal search interest

Shows relative search interest over time and by region, useful for catching rising topics before they show up in volume-based tools.

Access modelCompletely free, no account required, no paid tierResearch checkVerified against Google's own productEvaluate nextThat Trends shows relative interest, not absolute search volume, so pair it with a volume toolSource: Google Trends official site[Visit official site ↗](https://trends.google.com/)03## Google Search Console

Best for: finding queries your site already ranks for

Shows the exact queries driving impressions and clicks to your existing pages, including terms you did not intentionally target.

Access modelCompletely free for any verified site owner; no paid tier existsResearch checkVerified against Google's own product documentationEvaluate nextThat this only surfaces queries for pages you already rank on, not net-new keyword ideasSource: Google Search Console official site[Visit official site ↗](https://search.google.com/search-console/about)04## Bing Keyword Research

Best for: exact Bing search volumes, no ad spend

Bing Webmaster Tools' built-in keyword tool reports exact monthly search volumes from real Bing queries, without gating data behind ad spend.

Access modelCompletely free for any verified Bing Webmaster Tools user; no paid tierResearch checkVerified against Microsoft's own product documentationEvaluate nextWhether Bing's smaller query volume still represents your audience's search behaviorSource: Bing Keyword Research official siteVisit official site ↗05## Ahrefs Keyword Generator

Best for: quick keyword ideas with difficulty scores

Public tool returning up to 100-150 keyword ideas per search with rough volume and a difficulty score, no account required.

Access modelCompletely free, no login required; full filtering, export, and intent data require the paid Keywords ExplorerResearch checkConfirmed on Ahrefs' own free tool pageEvaluate nextWhether rough volume ranges are enough or you need exact numbers and export from the paid toolSource: Ahrefs Keyword Generator official site[Visit official site ↗](https://ahrefs.com/keyword-generator)06## Semrush Keyword Magic Tool

Best for: large keyword lists inside a broader SEO suite

Generates large, clustered keyword lists with intent and difficulty data, part of the broader Semrush platform.

Access modelFree account limits keyword tracking to 10 keywords and caps daily report requests; paid plans remove these limitsResearch checkConfirmed on Semrush's own free-account documentationEvaluate nextWhether the free account's daily report cap is enough for anything beyond a first lookSource: Semrush Keyword Magic Tool official site[Visit official site ↗](https://www.semrush.com/analytics/keywordmagic/)07## Moz Keyword Explorer

Best for: keyword scoring by difficulty and opportunity

Scores keyword ideas by difficulty, opportunity, and priority from a database of more than a billion suggestions.

Access modelFree account allows a limited number of queries per month; a paid Moz Pro plan removes the capResearch checkCross-checked Moz's own site against third-party reviews; the exact free query count varies by source, so confirm current limitsEvaluate nextWhether the monthly query cap is enough for occasional lookups versus ongoing researchSource: Moz Keyword Explorer official site[Visit official site ↗](https://moz.com/explorer)08## Ubersuggest

Best for: budget keyword and content ideas

Provides keyword suggestions, content ideas, and basic competitor data in one dashboard aimed at solo marketers and small teams.

Access modelFree plan limits users to a small number of searches per day; paid plans remove the daily capResearch checkConfirmed on Ubersuggest's own pricing pageEvaluate nextWhether a handful of free searches per day covers your research cadenceSource: Ubersuggest official site[Visit official site ↗](https://neilpatel.com/ubersuggest/)09## Keywords Everywhere

Best for: search volume overlay inside Google or YouTube

Browser extension that overlays search volume, CPC, and competition data directly onto Google, YouTube, and other sites you already browse.

Access modelNot free; runs on prepaid annual credits rather than a monthly plan, though a few minor features work without creditsResearch checkConfirmed on Keywords Everywhere's own pricing pageEvaluate nextWhether your keyword volume justifies buying an annual credit bundle instead of using a per-lookup free toolSource: Keywords Everywhere official site[Visit official site ↗](https://keywordseverywhere.com/)10## Keyword Tool

Best for: long-tail suggestions across many platforms

Pulls autocomplete-based long-tail keyword suggestions from Google, YouTube, Bing, Amazon, and the App Store in one search.

Access modelFree version returns keyword suggestions with no account required, but hides search volume, CPC, and competition data behind a paid Pro planResearch checkConfirmed on the tool's own siteEvaluate nextWhether keyword ideas alone are enough, or you need volume data badly enough to paySource: Keyword Tool official site[Visit official site ↗](https://keywordtool.io/)11## AnswerThePublic

Best for: visualizing question-based search queries

Turns autocomplete data into a visual map of questions, comparisons, and prepositions people search around a keyword.

Access modelFree plan allows a small number of searches per day with no signup, though the free tier has narrowed over time; paid plans add volume and CPC data plus more searchesResearch checkConfirmed on AnswerThePublic's own help documentationEvaluate nextWhether a few free searches per day are enough for occasional use versus ongoing researchSource: AnswerThePublic official site[Visit official site ↗](https://answerthepublic.com/)12## AlsoAsked

Best for: mapping People Also Ask question trees

Visualizes nested People Also Ask questions several levels deep, useful for structuring FAQ content and headings.

Access modelFree tier allows a small number of searches per day with image-only export; paid plans unlock CSV export and longer historyResearch checkConfirmed on AlsoAsked's own pricing pageEvaluate nextWhether image-only exports are workable, or you need CSV data badly enough to paySource: AlsoAsked official site[Visit official site ↗](https://alsoasked.com/)13## QuestionDB

Best for: finding real questions people ask online

Searches a database of real questions pulled from forums and Q&A sites to surface content ideas beyond standard autocomplete.

Access modelFree plan exists but is tightly capped (a handful of searches per month with limited results shown); paid plans raise bothResearch checkConfirmed on the tool's own pricing pageEvaluate nextWhether the free plan's low monthly search cap fits an occasional research cadenceSource: QuestionDB official site[Visit official site ↗](https://questiondb.io/)14## Keyword Surfer

Best for: search volume without leaving Google

Chrome extension that shows search volume and related keywords directly inside the Google results page, with no separate dashboard needed.

Access modelCompletely free, no account required for its core keyword-research featuresResearch checkConfirmed on Surfer's own extension documentationEvaluate nextWhether in-SERP volume data is enough, or you need bulk export and clusteringSource: Keyword Surfer official site[Visit official site ↗](https://surferseo.com/keyword-surfer-extension/)15## LowFruits

Best for: finding low-competition keyword gaps

Analyzes SERP weaknesses, such as forums or low-authority pages ranking, to surface keywords that may be easier to rank for than their volume suggests.

Access modelNo permanent free plan; pay-as-you-go credits or a subscription are required for real use, though a limited first analysis may be offeredResearch checkConfirmed on LowFruits' own pricing pageEvaluate nextWhether pay-as-you-go credits or a subscription fit your search volume betterSource: LowFruits official site[Visit official site ↗](https://lowfruits.io/)16## WordStream

Best for: keyword ideas plus PPC-focused metrics

Free tool that returns keyword ideas with volume and CPC data, aimed at advertisers building or auditing Google Ads campaigns.

Access modelCompletely free to use; requires an email address, and results nudge toward WordStream's paid managed servicesResearch checkConfirmed on WordStream's own tool pageEvaluate nextThat the free report is also a lead-generation tool, so expect follow-up sales contactSource: WordStream official site[Visit official site ↗](https://www.wordstream.com/keywords)17## Soovle

Best for: quick autocomplete ideas across engines

Aggregates autocomplete suggestions from Google, YouTube, Bing, Amazon, and other engines side by side for fast idea generation.

Access modelCompletely free, no account or signup neededResearch checkConfirmed via the current seo.com-hosted version of the tool after its domain moveEvaluate nextThat it has no volume or difficulty data, so pair it with a metrics-based toolSource: Soovle official site[Visit official site ↗](https://soovle.com/)18## Keyword Sheeter

Best for: bulk-generating thousands of keyword ideas fast

Continuously pulls Google autocomplete suggestions from a seed keyword, generating large volumes of long-tail ideas in seconds.

Access modelCore keyword generation is free with no signup; optional paid reports and bundles exist for saving or exporting larger listsResearch checkConfirmed on the tool's own siteEvaluate nextWhether you need the free generator alone or also want paid export and reportingSource: Keyword Sheeter official site[Visit official site ↗](https://keywordsheeter.com/)19## Exploding Topics

Best for: spotting trends before they peak

Surfaces emerging products, topics, and search terms before they become mainstream, based on tracked growth curves.

Access modelFree plan gives a limited, curated view of trending topics; a paid Pro plan (with a short free trial) unlocks the full databaseResearch checkConfirmed on Exploding Topics' own pricing pageEvaluate nextWhether the free curated list is enough, or you need the full searchable databaseSource: Exploding Topics official site[Visit official site ↗](https://explodingtopics.com/)20Recommended## nqzai

Best for: connecting keyword research to content output

Connect AI-search research, content decisions, visibility measurement, and GTM follow-through in one operating context.

Access modelPay-as-you-go tokens; new accounts start with a free token balance, not a flat subscriptionResearch checkConsistent with nqzai's own product and billing pagesEvaluate nextWhether a pay-as-you-go token model fits your usage pattern better than a flat subscriptionSource: nqzai official site[Explore nqzai ↗](https://nqz.ai/capabilities)## A practical keyword research workflow

1. Define one business question and the evidence that would change your decision.
2. Run the smallest free check that can answer that question.
3. Record the source URL, access model, date checked, and material limitation.
4. Validate important findings with a second source before implementation.
5. Prioritize changes by business impact, not by the number of warnings.

Category research: we screened relevant software-directory categories on G2 , used Product Hunt to surface newer products, and then linked each card to the product’s official source. BuiltWith is used only where technology-stack signals are relevant, such as competitive intelligence and prospecting. Listings are not paid placements, and inclusion is not an endorsement.

## Research methodology

Direct answer: This comparison groups tools by use case and links each card to an official product or documentation page. We distinguish free public utilities, free tiers, verification-gated access, and trials. The order reflects practical usefulness for a lean team: evidence quality, access friction, relevance to keyword research, clarity of limits, and how easily a result becomes a next action.

We do not treat an automated score as a guarantee of traffic, conversions, rankings, or AI citations. Product names, quotas, pricing, and capabilities change, so recheck the official source before relying on a current limit or making a purchase decision. Research checked August 2, 2026.

## Frequently asked questions

### Are these keyword research tools completely free?

Not always. This list includes public utilities, free plans, limited quotas, verification-gated access, and trials. Check the official source linked on each card for current access terms.

### Is a free keyword research tool enough for a small team?

Often, yes for a focused first workflow or a small data set. Teams usually need a paid plan when they require larger limits, history, automation, permissions, exports, or support.

### How should I compare two keyword research tools?

Compare the job each tool performs, the evidence it produces, the data it can export, its integrations, privacy terms, and the limit that will matter first—not only the headline feature list.

### What should I verify before adopting one?

Confirm the current pricing page, quota, retention policy, security terms, cancellation process, and whether the free tier permits the workflow you intend to run. Validate important outputs before using them for a high-impact decision.

## Conclusion

Direct answer: The best free keyword research stack is small and explicit. Pick tools based on the question at hand, preserve the evidence trail, and upgrade only when scale, history, automation, or collaboration justifies the additional cost.

Keyword research becomes much more useful when location is part of the search intent. If you're researching terms for a local business, these local SEO tools can help turn generic keyword ideas into location-specific opportunities.

Search intent isn't limited to Google, either. YouTube is the second-largest search engine on its own, so if video is part of your content mix, these YouTube SEO tools apply the same keyword-research discipline to video titles, descriptions, and tags.