9 Best Keyword Research Tools for SEO Success in 2025

執筆者 | 6月 28, 2025

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best keyword research tools

Are you trying to make your website more visible online?

Do you want more people to find your 仕事 through search engines?

It can be tough to know what words people actually search for.

This makes it hard to get your content seen.

But what if there were a way to find exactly what your audience is looking for?

Good keyword research tools can help you do just that. 

This article will show you the 9 best keyword research tools out there.

We’ll help you pick the right one to boost your SEO success in 2025!

What Are the Best Keyword Research Tools?

Finding the right keywords is crucial for your website to appear in search results.

But with so many tools out there, how do you pick the best one?

We’ve done the hard work for you.

Here’s our list of the top 9 tools to help you succeed.

1. Semrush (⭐️4.50)

Semrush is like a Swiss Army knife for SEO.

It helps you find keywords, check out what your competitors are doing, and even audit your website for problems.

It’s great for getting a full picture of your online marketing.

私たちの可能性を解き放ちましょう Semrush tutorial.

image 45

私たちの見解

Semrushロゴ

Seven million users saw a 152% increase in website traffic with Semrush. Could you be next? Explore it out to discover the secrets to online success.

主なメリット

  • A very broad range of marketing tools.
  • Offers excellent competitive analysis.
  • Provides a holistic approach to SEO.
  • Extensive keyword research.
  • Detailed site audit capabilities.

価格

All the plans will be billed annually.

  • Pro Plan ($117.33/month): Competitor analysis, keyword research, and website audit.
  • Guru Plan ($208.33/month): コンテンツ マーケティング ツールキットと履歴データ。
  • Business Plan ($416.66/month): 音声シェア、制限の拡張、API アクセス、PLA、分析。
Semrush Pricing

長所

  • 非常に完全なツールセット。
  • データは非常に正確です。
  • 競合他社の分析に最適です。
  • 深い洞察を提供します。
  • 優れたサイト監査。

短所

  • 圧倒される可能性があります。
  • 学習曲線は急峻です。
  • 一部の機能には追加料金がかかります。
  • レポートは複雑になる場合があります。

2. Surfer SEO (⭐️4.25)

Surfer SEO helps you write content that Google will love.

It analyzes what’s already ranking high and tells you what keywords to use.

It also suggests how long your content should be.

私たちの可能性を解き放ちましょう Surfer SEO tutorial.

surfer homepage

私たちの見解

サーファーSEO CTA

キーワード調査にかかる時間を半分に短縮!Surfer SEO はプロセスを効率化し、検索エンジンでコンテンツのパフォーマンスを向上させるキーワードを素早く見つけるのに役立ちます。

主なメリット

  • Focuses on on-page SEO.
  • Provides real-time content suggestions.
  • Offers data-driven recommendations.
  • Content Editor for live optimization.
  • Audit tool for existing content.

価格

All the plans are annually billed.

  • 不可欠: 月額79ドル
  • 規模: 月額175ドル
  • 企業: 価格についてはお問い合わせください。
surfer pricing

長所

  • 明確で実用的な洞察を提供します。
  • 明確な推奨事項を示します。
  • より良いコンテンツを書くのに役立ちます。
  • ウェブサイトのトラフィックを改善しました。
  • Google ドキュメントと統合します。

短所

  • 主にオンページ SEO に焦点を当てます。
  • 時々少し制限があるように感じます。
  • 創造的な文章を書くのにはあまり向いていません。
  • インターフェースが圧倒的になる可能性があります。

3. Ahrefs (⭐️4.00)

Ahrefs is super strong when it comes to checking out backlinks.

It helps you find what keywords your audience is searching for.

You can also see what content is doing well for others.

私たちの可能性を解き放ちましょう Ahrefs tutorial.

image 52

私たちの見解

Ahrefs

With Ahrefs, you can discover 28.7 billion keyword ideas and analyze 267.6 million domains. Stop guessing with your SEO strategy. Create your account today and see how Ahrefs can help you acquire organic traffic growth!

主なメリット

  • Industry-leading backlink data.
  • The second most active web crawler after Google.
  • Offers deep competitor insights.
  • Site Explorer for competitive analysis.
  • Keyword Explorer with traffic values.

価格

All the plans will be billed annually.

  • Lite: $108/month. You get 5 projects and 750 tracked keywords. This is for small businesses.
  • 標準: $208/month. You get 20 projects and 2,000 tracked keywords. This is great for growing websites.
  • Advanced: $374/month. This plan offers 50 projects and 5,000 tracked keywords. It’s for bigger teams.
Ahrefs Pricing

長所

  • Comprehensive data for SEO analysis.
  • Excellent keyword research capabilities.
  • Robust backlink analysis features.
  • User-friendly interface for navigation.
  • Great for competitor insights.

短所

  • Subscription plans can be costly.
  • Data sometimes has minor discrepancies.
  • Steep learning curve for beginners.
  • Some features lack full depth.

4. Ubersuggest (⭐️3.75)

Ubersuggest is a good tool for getting new keyword ideas.

It shows you how many people search for a term and how hard it might be to rank.

It’s pretty easy to use, even for beginners.

Unlock its potential with our Ubersuggest tutorial.

image 46

私たちの見解

Ubersuggest CTA

Ready to boost your traffic? Join 3 million users who trust Ubersuggest. Discover 1000s of new keywords and improve your SEO today. Create your account!

主なメリット

  • Very user-friendly interface.
  • One-time payment options are available.
  • Offers comprehensive keyword data.
  • Robust keyword research.
  • Website audit for quick fixes.

価格

  • Individual ($120/Lifetime)
  • Business ($200/Lifetime)
  • Enterprise ($400/Lifetime)
Ubersuggest Pricing

長所

  • Very affordable pricing.
  • Easy to understand.
  • Lifetime deal available.
  • Good for beginners.
  • Clear user interface.

短所

  • Fewer advanced features.
  • Not as comprehensive.
  • Customer support is slower.
  • Lacks some deep insights.

5. Moz (⭐️3.75)

Moz helps you explore keywords and see how hard it is to rank for them.

It also shows you what words your site already ranks for.

Plus, it gives you tips to make your content better.

Unlock its potential with our Moz tutorial.

image 47

私たちの見解

Moz CTA

Boost your SEO! Over 500,000 marketers trust Moz. Users like Tinuiti saw a 1,143% increase in keyword rankings. Ready to use Moz like an expert? Click to start improving your SEO today!

主なメリット

  • Industry-standard Domain Authority.
  • Strong focus on link analysis.
  • Offers detailed site crawl reports.
  • Keyword Explorer for insights.
  • Link Explorer for backlink data.

価格

All the plans will be billed annually.

  • Starter ($39/month)
  • Standard ($79/month)
  • Medium ($143/month)
  • Large ($239/month)
Moz Pricing

長所

  • Trusted Domain Authority.
  • The interface is appealing.
  • Excellent link analysis features.
  • Great for local SEO efforts.
  • Good educational resources provided

短所

  • The keyword database is smaller.
  • Competitor analysis is less in-depth.
  • Lacks content marketing features.
  • Some tools feel less robust

6. Content Raptor (⭐️3.50)

Content Raptor helps you make your existing content better for SEO.

It gives you tips on what to add to your articles.

It also connects with Google Search Console for real-time insights.

私たちの可能性を解き放ちましょう Content Raptor tutorial.

image 48

私たちの見解

content raptor cta

Discover how Content Raptor’s AI-driven entity optimization and integrated Google Search Console insights can streamline your SEO strategy. Access the detailed feature analysis.

主なメリット

  • Excellent for content optimization.
  • Integrates with Google Search Console.
  • Provides unique entity coverage score.
  • Content optimization engine.
  • Daily keyword rank tracking.

価格

  • Free ($0)
  • Pro ($47/month)
  • Enterprise (Contact them for custom pricing)
content raptor PRICING

長所

  • Very affordable pricing plans.
  • Excellent for content optimization.
  • The user interface is clean.
  • AI writing tools are helpful.
  • Quickly improves content quality.

短所

  • Limited general SEO features.
  • Less competitor analysis data.
  • No technical SEO audit.
  • Smaller keyword database.

7. SE Ranking (⭐️3.50)

SE Ranking is an all-in-one SEO tool.

It helps you track your keyword rankings and see what your competitors are up to.

It’s also great for checking your backlinks and making sure your website is healthy.

私たちの可能性を解き放ちましょう SE Ranking tutorial.

image 49

私たちの見解

SE Ranking logo

Join over 1 million SE Ranking users who track 10M+ keywords daily and save 3.6B+ positions yearly.

主なメリット

  • Precise keyword rank tracking.
  • Strong competitive research features.
  • Offers white-label reporting.
  • Comprehensive website audits.
  • Backlink monitoring and analysis.

価格

SE Ranking offers a variety of pricing plans to suit your needs & budget (Billed Annually)

  • Essential: $52.00/month. 1 manager seat, 5 projects, Rank Tracker.
  • Pro: $95.20/month. 3 Manager seats, 30 projects, On-page and SERP analysis, Share of voice metric.
  • Business: $207.20/month. 5 Manager seats, unlimited projects, Maximize data reach, Team Training, Data Insights.
SEランキング

長所

  • Comprehensive Feature Set
  • User-Friendly Interface
  • Excellent Value for Money
  • Strong Customer Support
  • Flexible and Customizable

短所

  • Limited white-labeling options
  • Occasional data discrepancies
  • Need improvement in content marketing features
  • Some features require an upgrade.

8. Ranktracker (⭐️3.50)

Ranktracker focuses on showing you where your website ranks in search results.

You can track your keywords over time and see how your competitors are doing.

It’s good for seeing your progress.

Unlock its potential with our Ranktracker tutorial.

image 51

私たちの見解

Ranktracker Logo

Ready to skyrocket your SEO performance? Ranktracker’s powerful features are trusted by thousands. Unleash your website’s potential – start your journey to the top today!

主なメリット

  • Precise keyword position tracking.
  • Monitors 43K+ cities for local SEO.
  • Offers AI-suggested keywords.
  • Daily keyword rank updates.
  • SERP feature tracking (snippets, videos).

価格

All the plans will be billed annually.

  • Starter: $14.00/month
  • Double Data: $34.41/month
  • Quad Data: $63.58/month
  • Hex Data: $121.91/month
Ranktracker Pricing

長所

  • Intuitive interface
  • Accurate data
  • Comprehensive features
  • Value for money
  • Great customer support

短所

  • It can be overwhelming for beginners
  • Limited historical data
  • No free plan
  • Occasional glitches

9. Raven Tools (⭐️3.25)

Raven Tools is an all-around marketing platform.

It helps with SEO audits, tracking rankings, and finding keywords.

It can also help you keep an eye on your competitors and manage social media.

Unlock its potential with our Raven Tools tutorial.

image 50

私たちの見解

Raven Tools CTA

Join thousands of businesses already using this powerful tool. Raven Tools integration allows you to accurately track ranking for 15,000+ keywords and effortlessly create comprehensive keyword research reports. Stop guessing; start growing!

主なメリット

  • Strong focus on customizable reports.
  • Integrates many marketing channels.
  • Offers a real-time social stream.
  • SEO auditing and analysis.
  • Backlink analysis (Majestic data).

価格

  • Small Biz ($39/month)
  • Start ($79/month)
  • Grow ($139/month)
  • Thrive ($249/month)
  • Lead ($399/month)
Raven Tools Pricing

長所

  • More affordable pricing options.
  • Excellent white-label reporting.
  • Good for client management.
  • Includes many user seats.
  • Site audit is quite thorough.

短所

  • The keyword database is smaller.
  • Lacks advanced SEO features.
  • Not as deep as some rivals.
  • Some data syncing issues occur.

キーワード調査ツールを選択する際に注意すべきことは何ですか?

  • Accurate Search Volume: Shows how many people search each month.
  • Keyword Difficulty Score: Tells you how tough it is to rank.
  • Search Intent Analysis: Helps understand why people search for specific terms.
  • Competitor Insights: Reveals keywords your rivals are using.
  • Long-Tail Keyword Ideas: Find less competitive, specific phrases.
  • SERP Features Data: Shows if featured snippets are possible.
  • Filtering Options: Easily narrow down your results.
  • User-Friendly Interface: The tool features a clear & intuitive interface, making it very easy to navigate and understand.
  • Cost-Effectiveness: Fits your budget, whether you’re looking for free or paid options.
  • Regular Data Updates: Ensures you’re working with current information.

How Can Keyword Research Tools Boost Your SEO?

Keyword research tools are your secret weapon for getting more people to visit your website.

They help you find great keyword suggestions and related keywords that real people are searching for.

This means you can create content that truly matches what your audience wants.

These seo tools show you important key metrics like monthly search volume.

This tells you how many times a month people search for a certain phrase.

By finding target keywords with good search volume and lower competition, you can improve your website’s chances of ranking higher.

Tools like a keyword explorer tool or a free keyword tool can help you generate keyword ideas.

Even for google ads campaigns, understanding keyword research data is key.

This helps you build a strong keyword strategy, whether you use a free keyword tool or a paid one, and even if you link your google ads account.

バイヤーズガイド

We wanted to find the best tools out there. Here’s how we looked at each one:

When doing our research to find the best product, we determined using these factors:

  • 価格: How much did each product cost, including details on any free keyword research tool options or free plan limitations.
  • Features: What were the best features of each platform or ソフトウェア? We looked at how well they generated keyword suggestions, provided related keywords, offered a keyword magic tool, connected to google keyword planner or the google ads platform for paid search campaigns, provided keyword search volume そして exact search volumes, helped identify keyword opportunities, allowed for building a keyword list, showed search volume data, supported organic keyword research, included serp analysis, found long tail keyword variations, assessed keyword competition, helped identify seed keyword options, showed average monthly searches, allowed unlimited searches, and assisted with more in depth research for content marketing そして paid search. We also checked for keyword data, key metrics, and how they handled high volume keywords, niche keywords, relevant keywords, and the most relevant keywords.
  • Negatives: What was missing or difficult to use in each product?
  • Support or refund: Do they offer a community, support, or refund policy? We also considered how well they helped analyze competitors rank そして group keywords, and if they provided insights into transactional keywords for a broader seo strategy for a given keyword or website url. We also checked for integration with google trends.

まとめ

So, there you have it! We’ve talked about the top 9 best keyword research tools out there.

We also looked at what makes a good tool and how they can help your SEO.

These tools offer important keyword metrics and access to the largest keyword database to help you.

You can even find options for free searches to get started.

Understanding which keywords have high search volume is key to getting more eyes on your content.

We’ve gone through all the details to help you make a smart choice.

Our goal is to help you get more visitors to your site and grow your online presence.

Trust our guide to help you pick the perfect tool for your needs.

よくある質問

What is keyword research?

Keyword research is finding words and phrases people type into search engines. It helps you understand what the audience wants. This way, you can create content that appears when they search, attracting more visitors to your website.

Why is keyword research important for SEO?

It’s extremely important for SEO because it enables you to target the right audience. By knowing what people search for, you can make content that answers their questions. This allows the website to rank higher in search results, driving more organic traffic.

How do I choose the best keyword research tool?

Look for tools that show accurate search volume and keyword difficulty. Additionally, verify if they provide competitor insights and assistance with long-tail keywords. A user-friendly interface and a good support system are also key factors to consider.

Can I do keyword research for free?

Yes, you can start with some free tools like Google Keyword Planner. While paid tools offer more in-depth data and features, free options are great for beginners. They help you get a basic understanding of keywords and start your SEO journey.

How often should I do keyword research?

Keyword research isn’t a one-time thing. Search trends change, so it’s essential to revisit your keywords regularly. Doing it every few months or when planning new content helps you stay updated and maintain a strong SEO.

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