How Do I Read Google Ads Reports? What Do the Metrics Mean?

How do I read Google Ads reports?

You read Google Ads reports by focusing on the metrics that actually indicate whether your campaigns are making money, which is a much shorter list than what Google shows you. The three numbers that matter most are cost per conversion (what you pay per lead), conversion rate (what percentage of clicks become leads), and total conversions (how many leads you got). Everything else is either a diagnostic metric to help you fix problems or a vanity metric that makes you feel good while your budget evaporates.

Google's reporting dashboard throws dozens of columns at you, and most advertisers either get overwhelmed or fixate on the wrong numbers. I've seen business owners celebrate a high click-through rate while ignoring the fact that none of those clicks became actual customers. Let me walk through every metric that matters, what "good" looks like, and which ones to ignore.

What do impressions, clicks, and CTR mean in Google Ads?

Impressions are the number of times your ad appeared on someone's screen. An impression doesn't mean anyone saw or read your ad, it means Google displayed it. Think of it as how many times your billboard was driven past, not how many people looked at it.

Clicks are the number of times someone clicked your ad and landed on your website or called your phone number. This is when you start paying, Google charges you per click, not per impression.

Click-Through Rate (CTR) is clicks divided by impressions, expressed as a percentage. A 5% CTR means 5 out of every 100 people who saw your ad clicked it. CTR tells you how compelling your ad is relative to the competition.

For context, LocaliQ's 2025 home services benchmark (3,211 campaigns, April 2024 to March 2025, medians) put the overall search CTR at 6.37%, from 4.69% for landscaping and 4.97% for plumbing up to 10.04% for window cleaning (LocaliQ). WordStream's 2025 all-industry figure was 6.66% (WordStream).

Honest caveat about CTR: A high CTR is not always good. If your ad promises "Free Estimates" and attracts price-shoppers who never convert, your CTR is high but your bank account is empty. CTR is a diagnostic tool, not a success metric.

What is CPC and how much should I pay per click?

Cost Per Click (CPC) is what you actually pay each time someone clicks your ad. It's determined by an auction: you set a maximum bid, but you're often charged less, because you pay roughly what it takes to beat the advertiser below you (Google Ads Help). Your actual CPC depends on your ad quality, your bid, and what competitors are bidding.

Here are 2025 home services benchmarks from LocaliQ (medians across 3,211 campaigns, LocaliQ):

Your own market can sit well above or below these: big metros and emergency keywords usually cost more.

What's "too much" for a click? It depends entirely on what that click is worth. Take a made-up plumbing example: clicks cost $10, one in ten becomes a lead, so a lead costs $100. If you win half of those leads, a customer costs $200. If the average job is worth $350, the math works, and it works even better once repeat customers are counted.

A $10 click for a $40 oil change? That doesn't work unless you have an incredible upsell and retention process.

The metric to watch isn't CPC, it's cost per conversion.

What are conversions and conversion rate?

A conversion is any action you've told Google to count as valuable, a phone call, a form submission, a quote request, or a booking. The definition is entirely up to you, and getting this right is the single most important thing in your Google Ads account. If you're tracking the wrong conversions (page views, button clicks that don't submit anything), every other metric becomes meaningless.

Conversion rate is conversions divided by clicks, expressed as a percentage. If 100 people click your ad and 10 fill out your contact form, your conversion rate is 10%. LocaliQ's 2025 home services median was 7.33%, from 3.70% for roofing to 17.65% for cleaning (LocaliQ).

The conversion rate trap: I've seen businesses celebrate a sky-high conversion rate that turned out to be tracking page views as conversions. Every visitor who loaded the thank-you page by accident counted as a "conversion." Their real conversion rate was a fraction of that. Always verify that your conversions represent actual leads: real form submissions, and real phone calls with a minimum call length set to filter out misdials.

What is cost per conversion and what's a good number?

Cost per conversion (also called cost per lead or cost per acquisition/CPA) is your total spend divided by total conversions. If you spent $1,000 and got 20 leads, your cost per conversion is $50. This is the single most important metric in your account because it directly tells you what you're paying for each potential customer.

The median cost per lead in LocaliQ's 2025 home services data was $90.92, and the trade table above shows how much it varies, from $46.99 for cleaning to $228.15 for roofing (LocaliQ). WordStream's 2025 all-industry median was $70.11 (WordStream).

How to evaluate your cost per lead: Compare it to your average job value and close rate. If your plumbing leads cost $100 each and you close 50% of them, your cost per customer is $200. If your average job is $350, you're making $150 profit per customer before overhead. That's healthy.

If your cost per lead is far above your trade's benchmark, something is usually broken: irrelevant search terms, a poor landing page, or targeting that's too broad. Check the VibeAds Benchmark tool to see how your numbers stack up against industry averages.

What is ROAS and how do I calculate it?

Return On Ad Spend (ROAS) is the revenue generated from your ads divided by the amount you spent on ads. A 4x ROAS means you made $4 for every $1 you spent on Google Ads. For local service businesses, ROAS is harder to track than e-commerce because your "sale" happens offline (a plumber fixing a pipe, a dentist doing a cleaning), but it's the ultimate measure of campaign success.

The formula: ROAS = Revenue from ad-sourced customers / Ad spend

Example: You spent $2,000 on Google Ads. You got 25 leads. 12 became customers. They generated $8,400 in revenue. Your ROAS is $8,400 / $2,000 = 4.2x.

What counts as a healthy ROAS depends on your margins. Work out the ROAS at which a job still pays for labor, materials and overhead, and treat that as your floor. If you're comfortably above it and losing impression share to budget, you're probably leaving money on the table.

The honest caveat: Most local service businesses can't track ROAS precisely because they don't connect their Google Ads data to their actual job revenue. They know they got 25 leads, but they don't know which 12 became $8,400 in jobs without a CRM that tracks the full journey. If you're not tracking this, at minimum calculate ROAS using your average job value times your estimated close rate. It won't be perfect, but it's better than flying blind.

What is Quality Score and why does it matter?

Quality Score is Google's 1-10 diagnostic rating, at the keyword level, of how your ads and landing page compare with other advertisers for that keyword (Google Ads Help). A higher score means your ad and page are more relevant and useful to the searcher, and higher-quality ads typically pay less per click and earn better positions. It is a diagnostic, not a direct input to the auction.

Quality Score has three components:

Google does not publish a weight for each component.

The CPC impact is real, but Google does not size it. Google says higher-quality ads typically cost less per click and that low quality can push your actual CPC close to your maximum bid even in light competition. It publishes no discount per Quality Score point. Still, improving ad and landing page quality is the one way to lower costs that doesn't involve spending more.

Honest caveat: Don't obsess over getting every keyword to 10. Focus first on your highest-spend keywords with the lowest scores, and look at which of the three components is "Below average"; that tells you what to fix.

What is impression share and should I care about it?

Impression share is the impressions you received divided by the impressions you were eligible to receive (Google Ads Help). If your impression share is 60%, your ad showed for 60% of the eligible searches and missed the other 40%.

There are two reasons you lose impression share:

Lost to budget (your budget ran out before the day ended): This is the most actionable signal in your account. If you're losing a meaningful share of impressions to budget, it means there are people searching for your services, your ads are eligible, but Google stopped showing them because your daily budget was exhausted. Increase your budget or narrow your targeting.

Lost to rank (your bid or Quality Score wasn't high enough): Your ad was eligible but a competitor outbid you or had a higher Quality Score. Fix this by improving Quality Score (free) or increasing bids (costs money).

There's no universal "good" impression share. Read it next to the two lost columns (budget and rank): if your cost per lead is healthy and you're losing share to budget, more budget is the easy win. Very high impression share in a competitive market can mean you're paying for marginal impressions with diminishing returns.

What is ad strength and does it actually matter?

Ad strength is Google's rating of your Responsive Search Ad (RSA) from "Poor" to "Excellent" based on the variety and relevance of your headlines and descriptions. An RSA can hold up to 15 headlines and 4 descriptions, and Google mixes them into combinations (Google Ads Help).

Here's what I'll tell you honestly: ad strength is a feedback tool, not a performance metric. Google says it isn't used to calculate Ad Rank, Quality Score, or auction wins (Google Ads Help). I've seen "Poor" rated ads beat "Excellent" rated ads because the "Poor" ad had tightly focused, keyword-relevant headlines while the "Excellent" ad had a bunch of filler headlines that diluted the message.

That said, don't ignore it entirely. "Poor" ad strength usually means you haven't provided enough headline/description variations for Google to test effectively. Aim for "Good", it means you have enough variety without padding your ad with irrelevant headlines just to please the rating system.

What to focus on instead: Look at your actual CTR and conversion rate by ad. Those metrics tell you if your ads are working. Ad strength tells you if Google's algorithm is happy, which is a different thing entirely.

Which metrics should I focus on first?

Focus on these five metrics in this order. Everything else is either a drill-down diagnostic or a vanity metric.

1. Conversions (total count), Are you actually getting leads? If this number is zero or very low, nothing else matters. Fix conversion tracking first, then fix your landing page.

2. Cost per conversion, Are those leads affordable? Compare to your industry benchmarks and your own unit economics. If you can't profit at your current cost per lead, you need to fix something before spending more.

3. Conversion rate, Are clicks turning into leads efficiently? Compare it with your trade's benchmark in the table above; well below it means your landing page or keywords need work.

4. Impression share lost to budget, Are you missing potential customers? If you're profitable (metrics 1-3 are good) but losing a meaningful share to budget, you should spend more.

5. Search terms report, Are the right people clicking? This isn't a metric, it's a report, but it's more important than most metrics. Check it weekly. If you see irrelevant search terms triggering your ads, add them as negative keywords immediately.

Metrics to deprioritize: impressions (meaningless without context), CTR (unless it's far below your trade's benchmark), ad strength (vanity metric), optimization score (Google's suggestion to spend more). These are diagnostic tools, not success metrics.

If you want a quick assessment of which metrics need attention in your account, use the free VibeAds benchmark tool to compare your numbers with industry averages, or connect your account to the free audit, which runs 25 checks.