Best Free Keyword Research Tools in 2026

Keyword research is the foundation of every successful SEO strategy. But you do not need to spend $99-299 per month on premium tools to find great keywords. These free tools provide everything you need to discover high-volume, low-competition keywords that drive real traffic.

1. SERPlyft Keyword Research Tool

SERPlyft's free keyword research tool generates keyword suggestions with search volume estimates, competition levels, and related terms. It integrates with our SEO audit so you can immediately see how well your site is optimized for target keywords. No subscription required.

Pros: Free, integrated with SEO audit, easy to use, provides actionable keyword suggestions.

Cons: Best suited for beginners and small-medium sites rather than enterprise-level research.

2. Google Keyword Planner

Google Keyword Planner is Google's own keyword research tool, originally designed for Google Ads campaigns. It provides search volume ranges, competition levels, and keyword suggestions directly from Google's data. You need a Google Ads account (free to create, no need to run ads) to access it.

Pros: Data directly from Google, shows CPC data, good for local keyword research.

Cons: Shows volume ranges instead of exact numbers (unless running ads), interface is ad-focused.

3. Google Trends

Google Trends shows the relative popularity of search terms over time. It is invaluable for identifying trending topics, seasonal patterns, and comparing keyword popularity across different regions. Use it to spot rising keywords before they become competitive.

Pros: Completely free, shows trends over time, regional data, real-time trending topics.

Cons: Shows relative popularity (not exact volume), limited to comparing 5 terms at a time.

4. Answer The Public

Answer The Public scrapes Google autocomplete and generates a visual map of questions, prepositions, and comparisons related to any keyword. It is fantastic for understanding what questions your audience asks and creating content that directly answers those questions.

Pros: Visual keyword maps, question-based keywords, great for content ideation.

Cons: Limited free searches per day, no search volume data in free version.

5. Ubersuggest (Free Tier)

Ubersuggest by Neil Patel offers 3 free searches per day. Each search shows keyword suggestions, search volume, SEO difficulty, paid difficulty, CPC data, and content ideas. It also provides a basic domain overview and backlink data for competitor analysis.

Pros: All-in-one data, includes competitor analysis, content ideas, shows difficulty score.

Cons: Only 3 free searches daily, data can be less accurate than premium tools.

6. Google Search Console

Google Search Console is not typically thought of as a keyword research tool, but it is one of the most valuable. It shows you the exact keywords your site already ranks for, how many impressions and clicks you get, and your average position. This is pure gold for finding keyword opportunities you are already close to ranking for.

Pros: Real data from Google, shows your actual rankings, completely free.

Cons: Only shows keywords you already rank for, limited to your own site data.

7. AlsoAsked

AlsoAsked scrapes Google's "People Also Ask" boxes and creates a hierarchical map of related questions. It helps you understand the full scope of questions around a topic, making it perfect for creating comprehensive FAQ sections and content that answers user intent at every level.

Pros: Maps related questions hierarchically, helps understand search intent depth.

Cons: Limited free searches, focused on questions only (no volume data).

How to Do Keyword Research (Step by Step)

1. Brainstorm seed keywords: Start with 5-10 broad terms related to your business or niche.
2. Expand with tools: Plug seed keywords into the tools above to generate hundreds of related terms.
3. Filter by intent: Categorize keywords as informational, commercial, transactional, or navigational.
4. Assess difficulty: Focus on keywords with reasonable competition you can realistically rank for.
5. Prioritize: Rank keywords by a combination of search volume, relevance, and difficulty. Target low-hanging fruit first.
6. Create content: Write comprehensive content optimized for your selected keywords.