What Is Google Ads Keyword Planner?
Google Ads Keyword Planner is a free tool inside Google Ads that helps you discover keywords people are searching for, see how often they're searched, and estimate how much they'll cost per click. It's the starting point for any Google Ads campaign because it tells you what your potential customers are actually typing into Google.
The tool has two main modes: "Discover new keywords" (type in a service or URL and get keyword suggestions) and "Get search volume and forecasts" (paste keywords you already have and see their estimated performance). Both are useful, but most people start with discovery.
One important clarification: Keyword Planner is free to access, but you need a Google Ads account to use it. You don't need to be running active campaigns or spending any money, a $0 account works fine. Google used to show exact search volumes to everyone, but now shows ranges (like "1K-10K") unless you have active ad spend. More on that limitation later.
How Do I Access Keyword Planner for Free?
You can access Keyword Planner by creating a free Google Ads account and navigating to Tools > Planning > Keyword Planner. You do not need to enter a credit card or launch a campaign to use the tool.
Here's the step-by-step:
- Go to ads.google.com and click "Start now"
- If prompted to create a campaign, look for "Switch to Expert Mode" at the bottom
- Then click "Create an account without a campaign"
- Fill in your business info (country, timezone, currency) and click Submit
- In your Google Ads dashboard, click the Tools icon (wrench) in the top navigation
- Under "Planning," click Keyword Planner
That's it. You now have access to the same Keyword Planner that agencies and professionals use. The only difference is that without active ad spend, you'll see search volume ranges instead of exact numbers.
How Do I Search for Keywords in Keyword Planner?
Click "Discover new keywords," then choose between entering keywords or a URL. For local service businesses, entering 2-3 descriptive phrases about your services gives the best results.
For example, if you're a plumber in Denver, type:
- "plumber Denver"
- "emergency plumber"
- "water heater repair"
Keyword Planner will return hundreds of related keywords with metrics for each. Here's how to read the results table:
| Metric | What It Means | What to Look For |
|---|---|---|
| Avg. monthly searches | How many people search this per month | 100-10,000 is the sweet spot for local services |
| Competition | How many advertisers bid on this keyword (Low/Medium/High) | "High" means it works, advertisers wouldn't bid if it didn't convert |
| Top of page bid (low range) | Estimated CPC for bottom of first page | Your realistic minimum cost per click |
| Top of page bid (high range) | Estimated CPC for top of first page | What you'll likely pay for position 1-2 |
Pro Tip: Start With Your Services, Not Your Industry
A common mistake is searching for broad industry terms like "plumber" or "landscaping." These return thousands of irrelevant keywords mixed in with the good ones. Instead, search for specific services:
- Instead of "dentist" → search "teeth whitening [city]", "dental implant cost", "emergency dentist"
- Instead of "HVAC" → search "AC repair [city]", "furnace installation cost", "HVAC tune-up"
- Instead of "lawyer" → search "personal injury lawyer [city]", "DUI attorney", "divorce lawyer near me"
This gives you a more focused list of keywords that actually match what your customers search for.
How Do I Filter Keywords by Location?
Location filtering is critical for local service businesses because national search volume numbers are meaningless if you only serve one city. You can filter by country, state, city, or even zip code.
In Keyword Planner:
- Look for the location filter at the top of the results page (it defaults to your country)
- Click it and type your target city, metro area, or state
- Click "Save", all search volumes and bid estimates will update to reflect your local market
Here's why this matters with a real example:
| Keyword | National Volume | Denver Metro Volume | Difference |
|---|---|---|---|
| "plumber near me" | 1.2M/month | 8,100/month | 99% irrelevant |
| "emergency plumber" | 450K/month | 2,900/month | 99% irrelevant |
| "water heater repair" | 165K/month | 1,300/month | 99% irrelevant |
If you're a plumber in Denver, the national numbers tell you nothing. Your actual addressable market is the Denver metro volume. A keyword with 1,300 local searches is excellent for a local business, that's roughly 43 people per day searching for your exact service.
Also filter by language if you serve bilingual markets. In areas like Miami, Phoenix, or Los Angeles, Spanish-language keywords can represent significant additional volume at lower CPCs because fewer advertisers target them.
How Do I Find Negative Keywords Using Keyword Planner?
Negative keywords are search terms you don't want your ads to show for. Keyword Planner is one of the best tools for building your negative keyword list because it shows you exactly what Google associates with your service terms, including the irrelevant stuff.
When you run a keyword discovery search, scroll through the results and look for keywords that match these patterns:
Common negative keyword categories for local services:
| Category | Examples | Why Exclude |
|---|---|---|
| Job seekers | "plumber jobs", "HVAC technician salary", "electrician apprentice" | People looking for employment, not services |
| DIY/How-to | "how to fix leaky faucet", "DIY electrical wiring", "unclog drain yourself" | People who won't hire you |
| Education | "plumbing school", "HVAC certification", "electrician license" | Students, not customers |
| Products | "plumbing supplies", "HVAC filters", "electrical wire" | Shopping for parts, not service |
| Other locations | City names outside your service area | Wasted clicks from non-serviceable areas |
| Unrelated services | "drain cleaning" (if you don't offer it), "pool plumbing" | Services you don't provide |
How to Build Your Negative Keyword List
- Run your keyword discovery search
- Sort by "Avg. monthly searches" descending, the high-volume irrelevant terms are the most dangerous
- Scan for any keyword that doesn't represent a paying customer
- Export the results to a spreadsheet (download button at top right)
- Mark irrelevant keywords and add them to your campaign's negative keyword list
I'd estimate that 30-50% of the keywords Keyword Planner suggests for any local service search are irrelevant. If you skip this step, you'll waste 20-40% of your budget on clicks that can never become customers.
For a pre-built negative keyword list for common service industries, check out our free Negative Keywords Tool, it covers the most common waste terms for 30+ local service categories.
How Do I Group Keywords by Theme?
Keyword Planner has a built-in grouping feature, but I find it unreliable for local services. It groups by semantic similarity, which often creates categories that don't match how you'd structure a real campaign. Manual grouping by service type and intent is better.
Here's the process I recommend:
- Export your keyword list from Keyword Planner to a spreadsheet
- Create columns for: Service Type, Intent Level (emergency/scheduled/research), and Include/Exclude
- Group by service type first, these become your ad groups
- Within each group, prioritize by intent, "emergency plumber near me" > "plumber" > "plumbing tips"
- Aim for 5-10 keywords per ad group, enough variety to capture traffic, tight enough for relevant ad copy
Each keyword group should be specific enough that you can write one ad that's relevant to every keyword in the group. If you can't, the group is too broad, split it.
For example, these should be separate ad groups:
| Ad Group | Keywords |
|---|---|
| Water Heater Repair | "water heater repair near me", "hot water heater not working", "water heater leaking" |
| Water Heater Installation | "new water heater installation cost", "tankless water heater install", "water heater replacement" |
Even though both are "water heater" keywords, the intent is different (repair vs. replace), the ad copy should be different, and the landing pages should be different.
What Are the Limitations of Keyword Planner?
Keyword Planner is useful but has significant limitations that you should be aware of. Understanding these will prevent you from making decisions based on incomplete data.
1. Search volume ranges instead of exact numbers. Without active ad spend, Keyword Planner shows ranges like "1K-10K" instead of exact numbers. The difference between 1,000 and 10,000 searches is enormous. You need active campaigns (any spend) to unlock more precise ranges, and even then they're rounded.
2. It groups similar keywords together. Keyword Planner treats "plumber near me", "plumbers near me", and "plumber close to me" as the same keyword for volume purposes. The reported volume is the combined total. This makes individual keyword estimates less reliable.
3. Competition means advertiser competition, not ranking difficulty. "Competition: Low" doesn't mean the keyword is easy to rank for, it means few advertisers bid on it. This could mean it's an untapped opportunity, or it could mean the keyword doesn't convert well enough for other advertisers to bother.
4. Bid estimates can be wildly off. The "top of page bid" estimates are based on historical averages across all advertisers. Your actual CPC will depend on your Quality Score, your competitors at the specific time of day, and your geographic market. I've seen actual CPCs differ from estimates by 50% or more.
5. No conversion data. Keyword Planner tells you how many people search for a keyword, but not how many of those searches turn into customers. A keyword with 10,000 searches and 0.5% conversion rate is worse than one with 500 searches and 15% conversion rate.
| Limitation | Impact | Workaround |
|---|---|---|
| Volume ranges | Can't distinguish 1K from 10K | Run a small campaign to unlock better data, or use third-party tools |
| Grouped volumes | Individual keyword estimates inflated | Look at the group, not individual keywords |
| Competition metric | Misleading about keyword value | Ignore "Low/Medium/High", focus on bid estimates instead |
| Bid estimate accuracy | Budget planning is approximate | Plan for 30-50% variance from estimates |
| No conversion data | Can't predict ROI from volumes alone | Use industry conversion rate benchmarks (8-15% for local services) |
Are There Better Alternatives to Keyword Planner?
Keyword Planner is a solid starting point, but it's not the only keyword research tool. Several alternatives provide data that Keyword Planner doesn't, particularly exact search volumes, keyword difficulty scores, and competitor analysis.
Free alternatives:
- Google Search Console, Shows exact queries driving traffic to your site (if you have one). Real data, not estimates.
- Google Trends, Shows relative search interest over time. Great for seasonal planning.
- AnswerThePublic, Shows questions people ask around your keywords. Good for content and ad copy ideas.
Paid alternatives:
- SEMrush ($140+/mo), Exact volumes, keyword difficulty, competitor keyword spying. Industry standard but expensive.
- Ahrefs ($99+/mo), Similar to SEMrush with strong backlink data. Slightly different volume estimates.
- Ubersuggest ($29/mo), Budget-friendly with decent volume data. Good for small businesses.
My honest recommendation: For most local service businesses spending under $5,000/month on ads, Keyword Planner is sufficient when combined with Google Search Console and common sense. The paid tools become worth it when you're managing multiple campaigns across multiple markets and need competitive intelligence.
The biggest gap in Keyword Planner is the lack of conversion data. That's why I always recommend running a small test campaign ($500 over 2-3 weeks) as fast as possible. Real campaign data from your own account, actual CPCs, actual conversion rates, actual cost per lead, is worth more than any tool's estimates.
How Often Should I Use Keyword Planner?
You should use Keyword Planner when you first set up campaigns, then revisit it quarterly. Search behavior changes with seasons, trends, and new competitors entering your market. A keyword that had 500 monthly searches last year might have 2,000 now, or vice versa.
Quarterly keyword research should take about 30-60 minutes and involves:
- Re-running your core service keywords to check for volume changes
- Looking for new keyword suggestions you haven't targeted
- Checking bid estimates against what you're actually paying (if CPCs have risen significantly, you may need to adjust budgets)
- Reviewing your search terms report in Google Ads for real queries that should become new keywords or negatives
Keyword Planner is a research tool, not a management tool. It tells you what people are searching for, but it doesn't manage your bids, write your ads, or track your conversions. For that, you need either manual campaign management, an agency, or an automation tool like VibeAds that handles the ongoing optimization based on real performance data rather than Keyword Planner estimates.