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Which free tool is best for keyword research?

Author:Semrush Team
1 min read
Sep 16, 2025

Semrush's Keyword Magic Tool is the best free tool for keyword research because it provides the most comprehensive keyword data and analysis features compared to other free options.

Unlike basic free tools that offer limited suggestions, Keyword Magic Tool delivers extensive keyword lists with search volumes, difficulty scores, and competitive insights that rival many paid tools.

Here's why Keyword Magic Tool outperforms other free options:

  • Massive keyword database. Generates thousands of related keywords from any seed term, far more than Google Keyword Planner or other free alternatives
  • Essential SEO metrics included. Shows search volume, keyword difficulty, and competition data that most free tools don't provide
  • Advanced filtering options. Lets you sort by search volume, difficulty, or keyword type to find the best opportunities quickly
  • No Google Ads account required. Unlike Google Keyword Planner, you can access full functionality without setting up ad campaigns

To maximize your free keyword research, use Keyword Magic Tool as your primary tool to get comprehensive data, then supplement with other free tools like Google Search Console or Google Keyword Planner to fill specific gaps.

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The Semrush Team brings together AI visibility experts, SEO specialists, data analysts, and product practitioners to help businesses grow and manage their online visibility. We publish research, experiments, and practical guidance grounded in real data from the Semrush platform, covering search, content marketing, and the broader digital marketing landscape.

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