Free SEO Tool for Keyword Research: Best Tools to Find Keywords in 2026

Finding the right keywords is one of the most important steps in SEO. Whether you run a website, write blogs, manage an online business, or create YouTube videos, choosing the right keywords can help your content reach more people through search engines. However, you do not always need to spend money on expensive SEO software to find useful keywords. There are several free SEO tools for keyword research that can help you discover search terms, understand what people are looking for, check keyword ideas, and plan your website content.

A free keyword research tool makes it easier to find keywords related to your topic without spending a large amount on SEO subscriptions. Tools such as Google Keyword Planner, Ahrefs Free Keyword Generator, Semrush, Ubersuggest, WordStream, and Keyword Tool offer different features for discovering keyword ideas. Some tools provide search volume estimates, while others help you understand keyword difficulty, related searches, and competitor keywords.

Choosing the right keywords is important, but having an SEO-friendly website also plays an important role in building a strong online presence.

In this guide, we will explore the best free keyword research tools, explain how to use them, compare their features, and help you choose the right tool for your SEO needs. Whether you are a beginner, blogger, website owner, or digital marketer, you will learn how to find relevant keywords and use them naturally in your content.

Free SEO Tool for Keyword Research: What Is It and Why Do You Need It?

A free SEO tool for keyword research is an online tool that helps you find the words and phrases people type into Google and other search engines. These tools show keyword suggestions and, depending on the platform, provide information about monthly search volume, keyword difficulty, competition, search trends, and related topics.

For example, suppose you have a website about digital marketing and want to publish an article about SEO. You may start with the keyword "SEO tips". A keyword research tool can suggest other useful terms, such as:

• Best SEO tools for beginners
• Free keyword research tool
• How to find SEO keywords
• Google keyword planner tool
• Keyword analysis tools
• Best keyword search tool for blogs

These suggestions help you understand what your audience wants to learn.

Why is keyword research important for SEO?

Keyword research helps you:

• Find topics that people are actively searching for.
• Understand what your target audience needs.
• Discover keywords with good search volume.
• Identify low-competition keyword opportunities.
• Plan blog topics and website pages.
• Understand your competitors' keyword strategies.
• Improve website visibility in Google search results.
• Create useful content instead of choosing topics randomly.

You do not need to purchase expensive SEO software when you are just starting. You can begin with free keyword research tools and gradually move towards advanced platforms as your website grows.

Best Free Keyword Research Tools for SEO in 2026

There are many keyword research tools available online, but not every tool provides the same information. Some focus on keyword suggestions, while others provide search volume, keyword difficulty, competitor research, and content ideas.

Here are some of the best free keyword research tools that beginners, bloggers, website owners, and SEO professionals can use.

1. Google Keyword Planner Tool Free

Google Keyword Planner is one of the most useful options for people looking for a keyword planner free Google solution. It is a Google Ads tool that helps users discover new keyword ideas and understand how frequently people search for particular terms.

You can use this Google keyword research tool for SEO content planning, even if your main goal is organic website traffic rather than paid advertising.

Main features of Google Keyword Planner:

• Discover new keyword ideas related to your business.
• View average monthly search estimates.
• Check advertising competition.
• Find keyword suggestions using a website URL.
• Review estimated advertising costs.
• Filter keywords according to location and language.

How to use Google Keyword Planner for SEO:

1. Open Google Ads and sign in with your Google account.
2. Complete the required account setup.
3. Navigate to Tools and select Keyword Planner.
4. Select "Discover new keywords".
5. Enter your primary keyword or website URL.
6. Choose your target country and language.
7. Click on Get Results.
8. Review the keyword suggestions and download the relevant data.

One important thing to understand is that Google Keyword Planner primarily focuses on advertising research. Its competition metric refers to paid advertising competition, not organic SEO difficulty. Search volume may also appear in ranges rather than exact numbers, depending on your account and data access. Google requires billing information to complete account setup and access basic keyword discovery features.

2.Ahrefs Free Keyword Generator

Ahrefs Keyword Generator is another useful free keyword tool for bloggers, SEO professionals, and website owners. It helps you find related search terms and discover new content opportunities.

You can enter a keyword and select a search engine such as Google, Bing, YouTube, or Amazon. The tool generates relevant keyword ideas based on your selected platform.

Main features:

• Discover up to 100 keyword ideas in the free generator.
• Find related search phrases.
• Explore question-based keywords.
• Check estimated search volume and keyword difficulty where available.
• Research keywords for different platforms.
• Find long-tail keyword opportunities.

How to use Ahrefs free keyword research:

1. Visit the Ahrefs Keyword Generator.
2. Enter your main keyword.
3. Select the search engine.
4. Choose your target country.
5. Click on Find Keywords.
6. Review the suggested keywords.
7. Select relevant keywords for your content.

For example, if you enter "food licence", you may find related topics such as food business registration, food safety certificate, food licence application, and food registration requirements.

Ahrefs also offers a separate free account with additional features for verified websites. However, its full Keywords Explorer is a paid feature.

3. Semrush Free Keyword Tool

Semrush is a popular platform for keyword research, competitor analysis, website auditing, and SEO performance tracking. Its free keyword tool is useful when you want to discover related keywords without immediately purchasing a subscription.

The free keyword tool provides keyword suggestions and important metrics such as search volume, keyword difficulty, CPC, and search intent. Its advanced Keyword Magic Tool offers more detailed keyword research and filtering options.

Main features of Semrush for keyword research:

• Discover related keyword suggestions.
• Check estimated monthly search volume.
• Understand keyword difficulty.
• Identify search intent.
• Find long-tail keyword opportunities.
• Explore keyword variations.
• Research topics for SEO content.

How to use Semrush free keyword tool:

1. Open the Semrush keyword research page.
2. Enter your primary keyword.
3. Select your target location.
4. Generate keyword suggestions.
5. Review volume, difficulty, and search intent.
6. Select keywords that match your website topic.

For example, if your main keyword is "free SEO tools", Semrush can help you explore related phrases such as free SEO tools for content writing, free keyword analysis, SEO keyword search, and competitor keyword research.

Semrush also provides a limited free experience of its Keyword Magic Tool. Its free trial is currently advertised as seven days for eligible toolkits. Always check the current offer and subscription conditions before signing up.

4. Ubersuggest Free Keyword Research Tool

Ubersuggest is a keyword research tool developed by Neil Patel. It is designed to make SEO research easier for beginners and small businesses.

If you are looking for a free keyword analysis tool, Ubersuggest can help you discover new keyword ideas and understand how competitive a particular search term may be.

Main features:

• Keyword suggestions and related search terms.
• Estimated monthly search volume.
• Keyword difficulty estimates.
• Content ideas.
• Competitor website analysis.
• Basic backlink information.
• Website traffic estimates.

How to use Ubersuggest:

Enter your keyword into the search box, select your target country, and open the keyword overview. You can then review keyword ideas, search volume, and difficulty estimates.

The free account has usage restrictions. Its published limits include three searches or reports per day, one project, and limited keyword tracking. The free account does not have a fixed expiry date, although its features are restricted.

5. WordStream Free Keyword Tool

WordStream offers a free keyword tool that helps users find related keywords for SEO and paid advertising campaigns. It is particularly useful for people who want to explore keyword ideas based on a topic or website.

You can enter a keyword or website URL and select an industry and location to receive more relevant suggestions.

Main features:

• Related keyword suggestions.
• Search volume estimates.
• Competition information.
• Estimated CPC data.
• Industry-based keyword research.
• Location-based keyword ideas.
• CSV keyword exports.

WordStream displays the first 25 keyword results directly. You can provide your email address to receive the complete keyword list as a CSV file.

6. Google Trends for Keyword Analysis

Google Trends is a useful free keyword analysis tool when you want to understand whether interest in a topic is increasing, decreasing, or remaining stable.

Unlike traditional keyword research tools, Google Trends mainly shows relative search interest over time rather than exact monthly keyword search volumes.

Main features:

• Compare multiple keywords.
• Check interest over time.
• Explore regional search interest.
• Discover related topics.
• Identify seasonal search patterns.
• Find rising and popular search queries.

For example, you can compare "online food business" and "food licence" to understand how search interest changes over time. This information can help you decide which topics to publish during a particular season.

7. Keyword Tool: Free Keyword Generator

Keyword Tool is a useful option for people looking for a free keyword generator. It uses autocomplete suggestions to discover phrases that people may search for on different platforms.

You can use it for Google, YouTube, Amazon, Bing, Instagram, and other supported platforms.

Main features:

• Generate long-tail keyword ideas.
• Discover question-based searches.
• Find YouTube keyword suggestions.
• Explore Amazon product search terms.
• Research keywords for different platforms.
• Generate content ideas from autocomplete.

The free version mainly provides keyword suggestions. Advanced search volume, competition, and trend information may require a paid subscription.

8. Moz Free Keyword Explorer

Moz Keyword Explorer is another option for keyword research. It helps SEO professionals understand keyword opportunities before creating website content.

You can use it to explore related search terms, understand keyword difficulty, and identify terms that may be suitable for your website.

Its useful research metrics include:

• Monthly search volume estimates.
• Keyword difficulty.
• Organic click-through rate estimates.
• Keyword suggestions.
• SERP analysis.
• Keyword prioritisation.

Moz provides limited free access, while more extensive research requires a paid plan.

Free Keyword Research Tool for YouTube: Find Keywords for Videos

A free YouTube keyword tool helps content creators understand what viewers search for before uploading a video. YouTube SEO is slightly different from traditional website SEO because people often search using questions, tutorials, product names, and step-by-step phrases.

For example, if you create videos about digital marketing, your seed keyword could be "SEO". You can discover related searches such as:

• SEO tutorial for beginners
• How to do keyword research
• Best SEO tools for YouTube
• Free keyword research tool
• SEO tips for small businesses

Some useful free YouTube keyword research tools include:

1. Ahrefs YouTube Keyword Tool: Helps discover YouTube keyword ideas and related searches.

2. Keyword Tool for YouTube: Generates autocomplete-based keyword suggestions and long-tail phrases.

3. YouTube Search Suggestions: Enter a topic into the YouTube search bar and review the suggestions that appear.

4. Google Trends: Compare topics and explore search interest, including YouTube Search where available.

How to find YouTube keywords for free:

1. Choose the topic of your video.
2. Enter the topic into YouTube search.
3. Note the autocomplete suggestions.
4. Check related keywords using Ahrefs or Keyword Tool.
5. Select phrases that closely match your video.
6. Use the main keyword naturally in the video title and description.

Remember that keyword selection alone cannot guarantee video views. Your video quality, relevance, thumbnail, and viewer engagement also matter.

Free Keyword Difficulty Checker: How to Find Easy-to-Rank Keywords

A free keyword difficulty checker helps you understand how difficult it may be to rank a particular keyword in Google's organic search results. Before writing a blog, it is important to understand whether your website has a realistic chance of competing for that keyword.

For example, a new website may find it difficult to rank for a highly competitive keyword such as "SEO tools". However, a more specific keyword such as "best free SEO tools for small businesses" may offer a better opportunity.

Some useful keyword difficulty tools include:

• Ahrefs Keyword Difficulty Checker: Provides a keyword difficulty score from 0 to 100.
• Semrush Keyword Overview: Helps you understand keyword difficulty, search volume, and search intent.
• Ubersuggest: Provides keyword difficulty estimates and related keyword suggestions.
• Moz Keyword Explorer: Offers keyword difficulty and opportunity metrics.

Ahrefs calculates its keyword difficulty score mainly by analysing referring domains pointing to top-ranking pages. However, keyword difficulty scores are estimates, not guarantees of ranking success.

Tips for finding low-competition keywords:

1. Start with a broad keyword related to your website.
2. Find more specific keyword variations.
3. Check their estimated search volume.
4. Compare keyword difficulty scores.
5. Search the keyword on Google.
6. Review the websites already ranking.
7. Choose keywords that match your website's content and authority.

Do not select a keyword only because its difficulty score is low. It should also be relevant to your website and useful to your visitors.

Free Keyword Analysis Tool for Competitor Research

Competitor keyword research is an important part of SEO. It helps you understand which keywords other websites are targeting and what type of content is bringing them organic traffic.

A free competitor keyword research tool can help you identify keyword opportunities that you may have missed.

For example, suppose you have a website about food business registration. You can analyse other websites in the same industry and look for topics such as:

• Food business registration process
• Food safety certificate
• Food licence documents
• Online food registration
• Food business compliance
• Food licence renewal process

Best tools for competitor keyword analysis:

How to find competitor keywords free:

1. Identify three to five websites in your industry.
2. Open Ahrefs, Semrush, or Ubersuggest.
3. Enter a competitor's website URL.
4. Review available organic keyword information.
5. Identify topics relevant to your website.
6. Create better and more useful content around those topics.

You can also use Google Keyword Planner by entering a competitor website URL to discover related keyword ideas. However, the suggestions are not necessarily a complete list of that competitor's ranking keywords.

Free Amazon Keyword Tool: Find Keywords for Product Listings

Amazon keyword research is important for sellers who want their products to appear when customers search on Amazon. A free Amazon keyword tool helps sellers understand how buyers search for products and what phrases they may use while comparing different items.

For example, if you sell handmade products, you may research keywords such as:

• Handmade gift items
• Handmade home decoration
• Organic skincare products
• Handmade jewellery
• Customised gift products

Some useful options include:

• Ahrefs Amazon Keyword Generator.
• Keyword Tool for Amazon.
• Amazon search autocomplete.
• Amazon product search suggestions.

How to find Amazon keywords:

1. Select the product you want to sell.
2. Enter its main name into Amazon search.
3. Review the suggested search terms.
4. Use a keyword generator to discover additional variations.
5. Select relevant phrases for your product title and description.

Always use keywords that accurately describe your product. Adding unrelated popular terms can confuse customers and reduce the quality of your product listing.

Best Free Keyword Research Tools: Comparison Table

If you are confused about which keyword research tool to use, the following comparison can help you make a better decision.

Which free keyword research tool should you choose?

• For Google search volume estimates, start with Google Keyword Planner.
• For keyword ideas, try Ahrefs Keyword Generator.
• For competitor research, explore Semrush and Ubersuggest.
• For YouTube keyword suggestions, use Ahrefs or Keyword Tool.
• For seasonal topics, use Google Trends.
• For keyword ideas with downloadable results, try WordStream.

You do not need to use every tool. Start with two or three tools that provide the information you need.

How to Do Keyword Research for SEO Step by Step

Finding keywords is only the first part of keyword research. The next step is selecting the right keywords and using them properly in your website content.

Here is a simple keyword research process that beginners can follow.

Step 1: Choose your primary keyword

Start by selecting a topic that matches your website or business. For example, if you have a website about digital marketing, your primary keyword could be "free SEO tool for keyword research".

Step 2: Find related keywords

Use a free keyword generator to discover similar phrases. You can use Google Keyword Planner, Ahrefs, or WordStream to find additional keyword ideas.

Step 3: Check search volume

Free keyword volume checkers can help you understand how frequently people search for a particular phrase. Select keywords that have meaningful search demand in your target location.

Remember that search volume is an estimate and may differ between tools.

Step 4: Analyse keyword difficulty

Use a free keyword difficulty checker to understand the competition. If your website is new, consider targeting specific long-tail keywords instead of focusing only on broad, highly competitive terms.

Step 5: Understand search intent

Search intent means understanding why someone is searching for a particular keyword.

There are four common types:

• Informational: Users want to learn something.
• Navigational: Users want to find a particular website.
• Commercial: Users want to compare products or services.
• Transactional: Users are ready to purchase or take action.

For example, "what is keyword research" is informational, while "best keyword research tools" is commercial.

Step 6: Check the Google search results

Search your selected keyword on Google. Review the pages already ranking and understand what information they provide.

Look for missing information, common questions, content formats, and topics that you can explain more clearly.

Step 7: Create a keyword list

Prepare a spreadsheet with your selected keywords and their available metrics.

These are example priorities, not measured keyword rankings or search-volume figures.

Step 8: Use keywords naturally in your content

Add your primary keyword in the title, introduction, relevant headings, URL, and meta description. Use related keywords naturally throughout the article.

Avoid repeating the same keyword unnecessarily. Your main goal should be to answer the reader's question.

After completing keyword research, businesses should focus on creating a professional website that presents their services clearly and provides a good user experience.

Free Keyword Planning Tools: How to Organise Keywords for Blog Writing

Free keyword planning tools help you organise your keyword list before writing content. Instead of writing separate articles for every similar keyword, you can group related search terms into meaningful topics.

For example, consider these keywords:

• Free keyword research tool
• Free keyword generator
• Free keyword search tool
• Keyword analysis tools
• Best keyword research tools
• Google Keyword Planner tool free

These keywords share a similar topic and can be included in one detailed article if their search intent overlaps.

However, keywords such as "free YouTube keyword tool" and "Amazon keyword tool for free" may need separate sections or articles because they target different platforms.

Simple keyword grouping method:

• Main keyword: The primary topic of your article.
• Related keywords: Similar search terms.
• Long-tail keywords: More specific search queries.
• Question keywords: Questions people ask about the topic.
• Commercial keywords: Search terms used to compare tools or services.

You can organise these keywords in Google Sheets or Excel without purchasing expensive software.

Semrush Free vs Paid Plans: Is It Worth Paying for Keyword Research?

Semrush offers different subscription options for users who need advanced SEO and digital marketing features. If you are searching for Semrush free, Semrush Pro, Semrush Guru plan, or Semrush pricing, it is important to understand the difference between its free and paid features.

Semrush free version

The free experience is suitable for basic keyword discovery. It allows you to explore limited keyword suggestions and some important keyword metrics.

Semrush Pro

The Pro plan is designed for users who need more keyword research, website tracking, competitor analysis, and SEO reporting capabilities.

Semrush Guru

The Guru plan offers more advanced features for larger content projects, agencies, and businesses that manage multiple SEO activities.

Semrush free trial

Semrush currently advertises a seven-day free trial for eligible toolkits. The availability and conditions can vary, so check the official offer before registering.

Should you pay for Semrush?

If you manage one small website or publish blogs occasionally, free keyword tools may be enough to begin with. However, if you manage multiple websites, work with competitors regularly, or need detailed reports, a paid SEO platform may save time.

Free SEO Tools for Content Writing and Website Optimisation

Keyword research is not the only activity required to improve your website's SEO performance. After selecting the right keywords, you also need to create useful content and make sure your pages are properly optimised.

Here are some additional free SEO tools for content writing and website optimisation.

1. Google Search Console

Visit Google Search Console

Google Search Console helps website owners understand how their pages perform in Google Search. You can review search queries, clicks, impressions, average positions, indexing issues, and other performance information.

2. Google Trends

Visit Google Trends

Use Google Trends to discover popular topics and understand changes in search interest.

3. Ahrefs SEO Toolbar

Explore Ahrefs SEO Toolbar

The Ahrefs SEO Toolbar provides useful on-page SEO information, page details, and other browser-based SEO features.

4. Google PageSpeed Insights

Visit PageSpeed Insights

This tool helps you check website speed and understand performance issues that may affect the user experience.

5. Google Analytics

Visit Google Analytics

Google Analytics helps you understand website visitors, traffic sources, engagement, and user behaviour.

Combining keyword research tools with these resources can help you build a more complete SEO strategy.

For online businesses planning to sell products, a well-designed ecommerce website can help improve their online presence and customer experience.

Common Keyword Research Mistakes You Should Avoid

Even when you use the best free SEO keyword tools, some common mistakes can affect your content strategy.

1. Choosing keywords only by search volume

A keyword with high search volume is not always the best choice. It should be relevant to your website and audience.

2. Ignoring keyword difficulty

If your website is new, targeting only highly competitive keywords may make it harder to achieve visibility.

3. Repeating keywords unnecessarily

Adding your primary keyword in every paragraph can make your content difficult to read. Use related terms naturally.

4. Ignoring search intent

A blog should answer the question behind the search. If people want a tutorial, simply publishing a product page may not satisfy their needs.

5. Depending on one keyword research tool

Different SEO platforms use different databases and estimation methods. Compare information from more than one source when possible.

6. Ignoring long-tail keywords

Specific phrases may attract visitors who are looking for exactly what your website offers.

7. Forgetting to update keyword research

Search behaviour changes over time. Review your keyword performance regularly and update your content when needed.

Frequently Asked Questions About Free SEO Tools for Keyword Research

1. What is the best free SEO tool for keyword research?

Google Keyword Planner, Ahrefs Free Keyword Generator, Semrush, Ubersuggest, and WordStream are useful options. The best choice depends on whether you need keyword suggestions, search volume, difficulty, or competitor research.

2. Is Google Keyword Planner completely free?

Google Keyword Planner is available without a separate subscription fee. However, you need to complete Google Ads account setup, including billing information, to access its basic keyword discovery features.

3. How can I find keywords for free?

You can find keywords by using Google Keyword Planner, Ahrefs Keyword Generator, Google Trends, Ubersuggest, and Google search suggestions.

4. Which is the best free keyword generator?

Ahrefs Free Keyword Generator is a good option for discovering keyword ideas. WordStream and Keyword Tool are also useful alternatives.

5. Is Ahrefs keyword research free?

Ahrefs offers a free Keyword Generator that provides keyword suggestions. Its advanced Keywords Explorer features require a paid subscription.

6. Is Semrush free to use?

Semrush provides limited free keyword research features. It also offers paid subscriptions and currently advertises a seven-day free trial for eligible toolkits.

7. What is the difference between search volume and keyword difficulty?

Search volume estimates how frequently people search for a keyword, while keyword difficulty estimates how challenging it may be to rank organically for that keyword.

8. Which free keyword tool is best for beginners?

Google Keyword Planner and Ahrefs Keyword Generator are good starting points because they help beginners discover relevant keywords without needing an advanced SEO subscription.

9. Can I do keyword research without paid tools?

Yes. You can perform basic keyword research using Google Keyword Planner, Google Trends, Google autocomplete, and free keyword generators.

10. How can I find low-competition keywords?

Use a keyword difficulty checker, explore long-tail keywords, analyse Google search results, and select topics that match your website's expertise.

11. Which is the best free keyword tool for YouTube?

Ahrefs YouTube Keyword Tool, Keyword Tool, and YouTube autocomplete are useful for discovering video keyword ideas.

12. Can I use Google Keyword Planner for SEO?

Yes. Although Google Keyword Planner is designed for Google Ads, you can also use its keyword suggestions and search estimates to plan organic SEO content.

13. What is a long-tail keyword?

A long-tail keyword is a specific search phrase, usually containing several words. For example, "best free keyword research tool for beginners" is a long-tail keyword.

14. How many keywords should I use in one blog?

There is no fixed number. Choose one primary keyword and include relevant secondary and long-tail keywords where they naturally fit the topic.

15. What is the best free competitor keyword research tool?

Ahrefs, Semrush, and Ubersuggest offer competitor research features with different free-access limitations. Google Keyword Planner can also generate ideas using competitor website URLs.

16. Is Ubersuggest free?

Ubersuggest offers a free account with limited daily searches and restricted features. You can use it for basic keyword and website research.

17. What is a free keyword volume checker?

A free keyword volume checker estimates the number of monthly searches for a particular keyword. Google Keyword Planner, Ahrefs, and WordStream offer keyword volume information with different limitations.

18. Are free keyword research tools accurate?

Free keyword research tools provide useful estimates, but their data may differ because each platform uses its own database and calculation methods. Always consider search intent and actual Google results alongside these estimates.

Conclusion: Choose the Right Free Keyword Research Tool for Better SEO

Choosing the right free SEO tool for keyword research can make your content planning easier and more effective. You do not need an expensive subscription to start finding useful keywords for your website. Tools like Google Keyword Planner, Ahrefs Free Keyword Generator, Semrush, Ubersuggest, WordStream, and Google Trends can help you discover search terms and understand what your audience wants.

If you are a beginner, start with Google Keyword Planner and Ahrefs. If you want to explore competitor keywords, try Semrush or Ubersuggest. For YouTube content, use YouTube autocomplete and Ahrefs' YouTube keyword research features.

Most importantly, do not select keywords only because they have high search volume. Focus on relevant search terms, understand user intent, check competition, and create helpful content around your chosen topics.

With the right keyword research strategy and consistent SEO efforts, you can improve your website's chances of reaching the right audience through organic search.

Whether you are starting a new business or improving your existing online presence, investing in professional corporate website design and development can support your long-term digital growth.