5 Best Keyword Research Tools for SEO

5 Best Keyword Research Tools for SEO

Keyword research is a key step in SEO as it allows you to find, analyze and use the best words or expressions that your target audience is looking for in search engines. The goal is, of course, to increase your traffic and your conversion rate. For this, you need to use a keyword research tool, but as there are many online, the choice can be complicated. In this article, we will present to you the 5 best keyword research tools to help you find yours.

What is a Keyword Research Tool?

Before getting to the heart of the matter, you need to know what a keyword research tool is and how it works.

A keyword research tool helps you find the words and expressions your target audience is searching for on search engines. Once you have found your SEO keywords, you can use them to optimize your existing content or simply create new content to rank for these keywords. Thus, this type of tool can help you come up with new content ideas based on your target audience’s queries.

With a keyword research tool, you can also see which keywords and long-tail keywords your competitors are ranking for at the top of the SERPs. You can then adapt and improve your strategy by using these keywords in your content to rank higher than them and steal their traffic. Therefore, a keyword research tool is also a great way to analyze the competition.

Which Keyword Research Tool Should You Use? 

By now, you know that keyword research tools are essential multipurpose tools for building your SEO strategy. But which one should you use? Let’s take a look at 5 of the best keyword research tools in 2021!

Google Keyword Planner

Google Keyword Planner is a popular and powerful keyword research tool from Google included in Google Ads. To use this free tool, you must have a Google Ads account.

With Google Keyword Planner, you can analyze a lot of data about a keyword, such as related searches, accurate search volume as it comes directly from Google, and Cost per Click (CPC) values. So, if you are an advertiser and want to run your ad on Google, this tool is the tool you need! 

Answer the Public

Answer the Public is an easy-to-use tool that generates keywords, questions, and related searches based on Google’s Autocomplete feature. 

By entering a keyword, you get a list of long-tail keywords in the form of a graphical representation. You can then analyze the questions users ask online related to your keyword. Answer the Public also displays prepositions and comparisons related to your keyword.

As you can see, this is a powerful and useful tool not only for improving your content and making sure it meets users’ needs, but also for coming up with new content ideas. And it’s free, so make sure to take advantage of it!


KWFinder is an intuitive keyword analysis tool that helps you find long-tail keywords with low SEO difficulty, as explained on their website.

This tool provides you with a lot of data about the keyword you want to rank for, such as search volume or keyword difficulty, which tells you how hard it is to rank for that keyword. With KWFinder, you can also see your competitors’ rankings by entering their domain or URL. You can then adapt your strategy and use their keywords to rank higher than them.

This tool is multifunctional and helps you improve your SEO strategy by analyzing various valuable data. KWFinder is not free, but you can get a 10-day free trial, and depending on your specific needs, three paid packages are available. 


Now we come to the fourth tool in our 5 best keyword research tools for SEO. Let’s talk about one that has been in the market for over 10 years: SEMrush

SEMrush is a popular tool among SEO experts because it is a complete platform for your online marketing strategy. You can analyze keywords with insightful data, run technical SEO audits, track your SERP positions, get content ideas, analyze your competition, and create an effective social media strategy. 

In short, a powerful tool for your SEO plan. It’s a paid resource, but you can get a free 7-day trial to try it out.


Last but not least, Ahrefs has become a high-performance and vital tool for SEO. It is considered the best alternative to SEMrush because both tools offer similar features. 

Ahrefs is a toolset for SEO. In addition to keyword research, you can optimize your website by auditing it, analyze your competitors and backlinks, and track your ranking progress. 

Ahrefs is a very powerful resource that is supported by a strong online community. It is also a paid tool, but like the others, you get a free trial period to test it before committing.

Keyword research tools are a key part of your SEO strategy. Not only do they provide you with keywords specific to your business, but they also help you analyze your competition and come up with new content ideas. There are hundreds of tools out there, but you need to find one or more that work for you to be the best in the SERPs.