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Google Keyword Planner Tutorial: Find High-Potential Keywords for Free [2026]

Want to do keyword research without spending money? Google Keyword Planner is your best free option. Learn how to use this tool to find high-volume, moderate-competition keywords.

8 min
Google Keyword Planner Tutorial: Find High-Potential Keywords for Free [2026]

Want to do keyword research, but Ahrefs and SEMrush are too expensive?

Google Keyword Planner is your free alternative.

It's Google's own tool — the data comes directly from Google, and it's completely free to use.

This guide walks you through using the tool from scratch to find high-potential keywords worth optimizing for.

Google 關鍵字規劃工具主介面截圖,顯示「探索新關鍵字」和「取得搜尋量和預測」兩個主要功能選項,介面清晰呈現 Google Ads 後台的工具入口


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Getting to Know Google Keyword Planner

What Is Google Keyword Planner?

Google Keyword Planner is a free keyword research tool built into the Google Ads platform.

Original purpose: Help advertisers find suitable keywords for ad campaigns

SEO purpose: Research organic search keyword opportunities

Why SEO professionals love it:

  • Official Google data — closest to real search volumes
  • Completely free to use
  • No need to run actual ads

Main Features of the Keyword Planner

Feature 1: Discover New Keywords

Enter seed keywords or a URL, and the tool provides related keyword suggestions.

Feature 2: Get Search Volume and Forecasts

Enter a list of keywords you already have and look up their search volumes and competition levels.

Who Is This Tool Best For?

User Type Suitability Reason
SEO Beginners ★★★★★ Best free entry point
Bloggers ★★★★★ Sufficient for basic needs
Small Businesses ★★★★☆ Best value for money
SEO Professionals ★★★☆☆ Needs supplementing with paid tools
Agencies ★★☆☆☆ Too basic — more advanced tools needed

For a broader overview of SEO tools, check out our guide.

Google 關鍵字規劃工具的三大功能示意圖,包含探索新關鍵字、取得搜尋量、預測廣告成效三個核心功能,以圖示加文字說明形式呈現


How to Use the Keyword Planner for Free

Step 1: Create a Google Ads Account

You need a Google Ads account to access it, but you don't need to spend money on ads.

Setup steps:

  1. Go to ads.google.com
  2. Sign in with your Google account
  3. Follow the prompts to fill in your business information
  4. Important: At the business information step, choose to create an account without a campaign
  5. Complete the setup

Pro tip: During setup, skip all payment and ad configuration steps — just create an empty account.

Step 2: Access the Keyword Planner

  1. Log in to your Google Ads account
  2. Open the "Tools" menu (the tools icon)
  3. Click "Keyword Planner"
  4. Enter the tool interface

Shortcut: You can also go straight to ads.google.com/aw/keywordplanner/home.

Step 3: Choose a Feature

Once inside, you'll see two options:

"Discover New Keywords"

  • Enter seed keywords
  • Get related keyword suggestions
  • Discover new keyword opportunities

"Get Search Volume and Forecasts"

  • Enter your existing keyword list
  • Look up search volumes
  • Get forecast data

Free Usage Limitations

Important limitation:

Accounts that aren't running ads often see "Avg. monthly searches" displayed as a range (e.g., 1K-10K) rather than an exact figure.

What does this mean?

With a range you can gauge a keyword's order of magnitude, but you can't precisely compare two keywords against each other.

Worth noting: Google's own documentation does not state that running ads is what determines whether you see exact figures or ranges. This is a long-standing user observation, not an official specification.

Workarounds:

  • Range values are actually sufficient for assessing keyword potential
  • Use paid tools if you need precise figures

Feature-by-Feature Tutorial

Feature 1: Discover New Keywords

This is the most commonly used feature.

Steps:

  1. Select "Discover New Keywords"
  2. Enter a few seed keywords (separate multiple terms with commas or spaces)
  3. Select language and region
  4. Click "Get Results"

Seed keyword tips:

✅ Use core terms from your industry ✅ Enter multiple keywords together ✅ Try different phrasings and variations

❌ Don't use overly broad terms ❌ Don't enter just one keyword

Example:

If you run a bakery business:

  • Good seed words: cake recipe, chiffon cake, birthday cake
  • Too broad: cake, dessert, baking

Filtering results:

After getting results, use the filter options:

  • Keyword text: Include or exclude specific words
  • Avg. monthly searches: Set a minimum search volume
  • Competition: Low/Medium/High
  • Bid amount: Ad bid range

Exporting data:

Click the "Download" button in the top right to export as:

  • CSV format
  • Google Sheets

Feature 2: Get Search Volume and Forecasts

Use this when you already have a keyword list.

This feature supports batch lookups — paste up to 10,000 keywords at once, or upload a CSV file.

Steps:

  1. Select "Get Search Volume and Forecasts"
  2. Paste your keyword list (one per line)
  3. Click "Get Started"

Data you'll see:

Column Description
Avg. Monthly Searches Monthly search volume (range)
3-Month Change Recent trend
YoY Change Long-term trend
Competition Ad competition (Low/Med/High)
Top of Page Bid (Low) Minimum ad bid reference
Top of Page Bid (High) Maximum ad bid reference

How to interpret competition:

⚠️ Important: The competition level here refers to "ad competition," not "SEO competition."

However, it can serve as a reference:

  • High competition = The keyword has commercial value
  • Low competition = May have low search volume or low commercial value

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Hands-On: Finding High-Potential Keywords

Getting Ideas from Competitor Websites

Using the URL feature:

  1. In "Discover New Keywords," select "Start with a website"
  2. Enter a competitor's URL
  3. Choose entire site or a specific page
  4. Get keywords related to that site

Value of this feature:

  • See what keywords competitors are optimizing for
  • Discover keywords you might have overlooked
  • Find industry-related terms

Using the Keyword Filter

Filtering strategies for high-potential keywords:

Strategy 1: Medium volume + Low competition

  • Search volume: 1K-10K
  • Competition: Low

These keywords are typically easier to rank for with decent traffic potential.

Strategy 2: Long-tail keywords

  • Search volume: 100-1K
  • Keyword length: 4+ words

Long-tail keywords face less competition and typically have higher conversion rates.

Long-Tail Keyword Mining Tips

What are long-tail keywords?

Longer, more specific search terms.

Example:

  • Short-tail: coffee machine
  • Long-tail: quiet home coffee machine for beginners

How to find long-tail keywords using the Keyword Planner:

  1. Enter core seed terms
  2. Look for longer phrases in the results
  3. Use filters to narrow down

Characteristics of long-tail keywords:

  • Lower search volume
  • Less competition
  • More specific search intent
  • Typically higher conversion rates

For more keyword research techniques, check out our Keyword Research guide.

使用競爭對手網址找關鍵字的操作步驟截圖,展示在「透過網站開始」功能中輸入網址後獲得的關鍵字建議結果


Understanding and Applying the Data

What Search Volume Means and Its Limits

What does search volume represent?

How many people search for this keyword each month.

Interpreting range values:

Range Meaning
10-100 Low volume, but could be a precise long-tail
100-1K Moderate volume, good for getting started
1K-10K Solid search volume
10K-100K High volume, likely more competitive
100K+ Extremely popular keyword

Limitations:

  • These are monthly averages that don't reflect fluctuations
  • Range values lack precision
  • They don't indicate how much traffic you'll actually get

Observing seasonal patterns

Click on a keyword to see a trend chart showing monthly search volume changes.

This matters! Some keywords have clear seasonal patterns:

  • "Christmas gifts" peaks in December
  • "Air conditioner reviews" peaks in summer
  • "Tax filing" peaks in the spring

Factor in these seasonal patterns when planning your content.

How to Assess Competition Level

Remember: This measures ad competition, not SEO competition.

How to apply it:

  • High competition: The keyword has commercial value — worth investing in
  • Low competition: Could be a blue ocean opportunity, or could lack value

Recommended approach:

Treat competition level as a "commercial value indicator" rather than a "ranking difficulty indicator."

The Reference Value of Bid Amounts

What do bids represent?

How much advertisers are willing to pay per click for this keyword.

High bids = High-value keywords

For example:

  • Keywords for high-ticket services like "lawyer" or "insurance" tend to carry noticeably higher bids
  • Informational queries like "recipe" tend to carry far lower bids

(Bids swing widely by region, timing, and auction pressure — always go by what the tool shows you at the moment.)

Implications for SEO:

If a keyword has high ad bids, it means the keyword brings valuable visitors. Such keywords are worth investing SEO effort into.


Limitations of the Keyword Planner

Data Accuracy Issues

Main issues:

  1. Range values lack precision

    • A 1K-10K range is too broad
    • Cannot precisely compare keywords
  2. Data update frequency

    • Not real-time data
    • Slower to reflect trends
  3. Similar keywords get merged

    • Similar terms may be combined
    • Cannot distinguish search volumes for variations

Supplementary Tools Needed

Recommended complementary tools:

Purpose Free Tool Paid Tool
Trend confirmation Google Trends -
Precise search volume - Ahrefs, SEMrush
SEO difficulty - Ahrefs, Moz
Competitive analysis Google Search Ahrefs, SEMrush

Learn about more free SEO tools and free keyword tools in our recommendations article.

搜尋量範圍值解讀圖表,將 10-100、100-1K、1K-10K、10K-100K 等範圍值以視覺化方式呈現,並標註各範圍的建議應用場景

Best and Worst Use Cases

Best suited for:

✅ Initial keyword brainstorming ✅ Confirming whether a keyword has search demand ✅ Budget-constrained beginners ✅ Advertising keyword research

Not ideal for:

❌ Decisions requiring precise search volume ❌ In-depth competitive analysis ❌ Tracking search volume changes over time ❌ SEO difficulty assessment


Why Google Keyword Planner Is the Best Free Starting Point

Google Keyword Planner is the best free tool for getting started with keyword research.

Key takeaways from this article:

  1. Free to use: Just create a Google Ads account — no ad spend required
  2. Two main features: Discover new keywords and check search volumes
  3. Data limitations: Search volumes show ranges, not exact figures
  4. Power tips: Get ideas from competitor sites and use filters effectively
  5. Need supplements: Pair with Google Trends and other tools for a complete picture

Our recommendations:

  1. Start with this free tool
  2. Pair it with Google Trends to confirm trends
  3. Consider paid tools once you have the budget
  4. Remember: Tools are just aids — content is the key

Once you've found your keywords, pair the tool with keyword analysis methods to pick the targets most worth optimizing for.

Google 關鍵字規劃工具使用流程總結圖,從建立帳號、進入工具、探索關鍵字、篩選分析到應用的完整流程,以步驟圖形式呈現


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