Keyword Planner is a free research tool inside Google Ads (and Microsoft Advertising) that generates keyword suggestions, search volume estimates, and cost forecasts to help advertisers build Search campaigns. It uses historical search data and bid behavior rather than autocomplete scraping to predict metrics like clicks, conversions, and impressions. For marketers, it matters because it bridges research and execution, letting you forecast budget requirements and organize keywords into campaigns before spending money.
What is Keyword Planner?
Keyword Planner refers to built-in forecasting tools within advertising platforms, primarily Google Ads and Microsoft Advertising, though the term is often associated with third-party alternatives that mimic its functions.
Google Ads Keyword Planner draws from Google's Search campaign data to show monthly search volumes, competition levels, and suggested bids. It requires an active Google Ads account with billing information entered to access core features like "Discover new keywords" (Source: Google Ads Help). The tool is designed for advertisers planning paid Search campaigns, not organic SEO content creation.
Microsoft Advertising Keyword Planner offers similar functionality for the Bing network, with additional granularity for location targeting (cities, metro areas, DMAs, states, provinces, and nations) and cross-border campaign planning (Source: Microsoft Advertising).
Third-party alternatives like Keyword Tool.io use Google Autocomplete to generate suggestions rather than historical advertiser data. These tools often reveal long-tail keywords that Keyword Planner hides because they lack commercial volume or fit (Source: KeywordTool.io).
Why Keyword Planner matters
- Daily refreshed forecasts: Forecasts update every day using the last 7–10 days of data, adjusted for seasonality, allowing rapid response to market changes (Source: Google Ads Help).
- Budget control: See average costs and performance estimates (clicks, conversions, impressions) before setting bids or budgets.
- Campaign-ready organization: Automatically group keywords into ad categories or export directly into Search campaigns.
- Discovery via URL: Generate keyword ideas by entering competitor websites or your own domain to find terms related to page content (hyperlinks excluded).
- Location simulation: Microsoft’s version lets you test campaign reach across specific geographic tiers from cities to entire nations.
How Keyword Planner works
- Access the tool: In Google Ads, click Tools > Planning > Keyword Planner. You must complete account setup with billing information to unlock keyword discovery features.
- Choose a workflow:
- Discover new keywords: Start with seed keywords or a website URL to generate ideas. Combining both inputs yields a larger volume of suggestions.
- Get search volume and forecasts: Upload existing keyword lists via CSV to see traffic estimates and performance predictions.
- Organize keywords: Auto-group terms into ad groups based on semantic themes.
- Filter and refine: Narrow results by competition level, impression share, top-of-page bid thresholds, or keyword text. Use the "Refine keywords" panel to exclude categories (e.g., remove all shoe colors except red).
- Review forecasts: The Forecasts page shows estimated performance based on your specified daily budget and bid strategy (e.g., Maximize clicks). Note that actual performance depends on ad quality, location targeting, and industry behavior, not just keyword selection.
- Export or implement: Download the plan, share it with collaborators, or add keywords directly to new or existing campaigns. Specify match types (Broad, Phrase, Exact) before adding.
Important constraint: Keywords with very low search volume or sensitive classifications return errors and cannot be forecasted.
Types of Keyword Planner
| Tool | Data Source | Best For | Key Limitation |
|---|---|---|---|
| Google Ads Keyword Planner | Historical search & bid data | PPC campaign planning & budget forecasting | Requires active account with billing info; hides some long-tail terms |
| Microsoft Advertising Keyword Planner | Bing search network data | Cross-border campaigns & granular location targeting | Smaller search volume than Google |
| Keyword Tool (alternative) | Google Autocomplete suggestions | SEO content & long-tail keyword discovery | No bid or competition data; free version limited to 750+ suggestions (Source: KeywordTool.io) |
Best practices
Plan weekly during volatility. If markets shift, forecast accuracy degrades with monthly planning. Switch to weekly cycles until conditions stabilize (Source: Google Ads Help).
Combine inputs for volume. Enter both seed keywords and your domain in the "Discover" workflow to generate more ideas than using either method alone.
Filter by realistic bids. Set filters to show only keywords where bids under $1 can reach the top of the page. This eliminates uncompetitive terms early.
Exclude existing keywords. Before forecasting, remove terms already in your account to avoid duplication and skewed performance estimates.
Verify match types. Broad match defaults capture wide traffic. Switch to Phrase or Exact match in the planner if you need tighter targeting before exporting to campaigns.
Check login context. Data discrepancies can occur between child accounts and manager accounts depending on whether you log in directly or via redirection.
Common mistakes
Treating forecasts as guarantees. The tool shows optimal performance based on spend, but actual results vary with ad quality, budget constraints, and customer behavior. Fix: Use forecasts as directional estimates, not promises.
Using Planner for pure SEO content. Keyword Planner filters out many informational long-tail terms because it prioritizes commercial intent. You will miss blog topics and content opportunities. Fix: Supplement with Autocomplete-based tools like Keyword Tool for content calendars.
Monthly planning during market shifts. The seasonal model adjusts daily. Rigid monthly reviews miss sudden trend changes. Fix: Review weekly when affected by market volatility.
Ignoring the billing requirement. You cannot access "Get ideas for new keywords" without entering billing information in Google Ads, even if you never run ads. Fix: Complete account setup fully before attempting research.
Over-relying on website scraping. The tool analyzes page text but ignores hyperlinked content when generating ideas from URLs. Fix: Manually input key product terms rather than expecting the URL crawl to catch everything.
Examples
E-commerce apparel retailer: Enter "running shoes" plus your domain. Filter by categories to isolate color variations (e.g., "red running shoes"). Set a filter for top-of-page bids under $1. Add viable terms to a new campaign forecast with a $50 daily budget to see estimated clicks and conversions before launch.
B2B software company (Microsoft Ads): Use Microsoft’s Planner to target specific DMAs in the US and Canada simultaneously. Enter competitor URLs to find keyword gaps. Review cost estimates to prioritize high-intent, lower-bid terms for cross-border campaigns.
Content marketer workaround: Instead of using Google Keyword Planner (which hides informational queries), use Keyword Tool to prepend and append seed terms with letters and numbers, generating 750+ long-tail suggestions from Autocomplete for blog post ideas (Source: KeywordTool.io).
FAQ
Do I need to run ads to use Keyword Planner? Yes, for Google Ads you must complete account setup and enter billing information to access keyword discovery and forecasting features, though you are not required to launch active campaigns.
Why does Keyword Planner show no data for some keywords? Keywords with very low search volume or those classified as sensitive (adult, violent, etc.) are not discoverable or forecastable. You will receive an error prompting you to try different terms.
How often does the forecast data update? Forecasts refresh daily using data from the last 7–10 days, adjusted for seasonality. During volatile market periods, Google recommends planning weekly rather than monthly or quarterly.
Can I use Keyword Planner for organic SEO keyword research? Limited use. The tool is designed for advertisers and may hide valuable long-tail keywords that have search volume but low commercial intent. For content marketing and SEO, tools using Google Autocomplete (like Keyword Tool) often provide better long-tail coverage.
What is the difference between Google and Microsoft Keyword Planner? Google’s tool draws from the larger Search network and integrates directly with Google Ads campaign creation. Microsoft’s tool supports the Bing network and offers more granular location targeting options (DMAs, metro areas) and cross-border planning features.
Why do my search volumes differ when I log in differently? Logging directly into a child account versus accessing it through a manager account can cause data discrepancies in Keyword Planner. Always verify which account context you are using when comparing metrics.
