Many business owners we meet say that Google Ads is a black hole where money goes in and they hope it comes out.

The mistake they often make is looking at total spend instead of the system that actually drives the results.

There are just six metrics that are critical for knowing how your Google Ads are performing.

You may have heard of some of these numbers and may be missing others, but understanding all six pieces will give you a much better sense of what's really going on and the confidence to spend more.

1. Impression Share (Visibility)

The first metric is visibility, which you'll see as impression share.

This is the percentage of times your Google Ads appear when someone searches for your target keywords. This really matters because if your ads aren't showing, then nothing else matters. A low visibility score means you're missing out on keyword opportunities, while high visibility means you're competing effectively.

To improve this, you want to optimize your Quality Score, which is a combination of your ad relevance, landing page experience, and expected click-through rate. As you adjust bid strategies, you’ll be tweaking your available impression share. The goal is to eliminate wasted spend on irrelevant keywords and ensure your visibility is high for the most important ones.

For branded terms, we target 90%+ impression share. For competitive non-branded terms, 65–80% is typically strong — anything higher often means you're overpayin

2. Click-Through Rate (CTR)

Next up is your click-through rate (CTR), which is the percentage of people who see your ad and actually click it.

A high CTR tells Google that your ad is relevant, which leads to a lower cost per click and a better ad position. On the flip side, a low CTR signals that your ad isn't resonating, and Google will show it less and less over time.

How can you drive this up? By constantly testing ad headlines, descriptions, and extensions. Make sure your ad copy is super strong and speaks directly to the searcher's needs.

For search campaigns, you typically want to be at a 5% to 8% CTR. If you're below 3%, it usually signals something is wrong with your ad copy or targeting. Anything above 10% is a great sign that your messaging is really landing, and you should double down on it.

3. Conversion Rate

The third metric is conversion rate—the percentage of people who click your ad and then take the action you want them to, whether that's a phone call, a form submission, or a product purchase.

This is crucial. You can have the best ads in the world, but if the traffic they generate doesn't lead to results, it doesn't matter.

That's why conversion rates are so important. You need to optimize the next step in the journey—your website or landing page—to make it easy for visitors to become customers.

For most lead generation websites, a 5% to 10% conversion rate is a good target. This means for every 100 paid clicks, 5 to 10 are taking the next step. It might be a bit lower for e-commerce sites, but the most important thing is to benchmark your performance against industry standards.

4. Cost Per Click (CPC)

Cost per click (CPC) is simply how much you pay each time someone clicks one of your ads.

This metric directly influences how many clicks your budget can buy. If you have $5,000 to spend and each click costs you $10, you only get 500 clicks to work with.

But here’s the key gotcha: cheaper clicks are not always better.

A $2 click that rarely converts is far less valuable than a $10 click that converts consistently. You'd go for the $10 click every time. CPC varies wildly by industry—a plumber might pay $10 per click while an accountant pays $2. The key is to benchmark it against competitors and focus on whether those clicks are converting downstream.

5. Cost Per Lead (CPL)

This is where most business owners start paying attention, and rightly so.

Your cost per lead (CPL) is how much it costs to acquire someone's details or have them put their hand up to say, "Yes, I'm interested." This is where the rubber meets the road.

However, not all leads are created equal. While you always want to drive down your CPL, remember to look at the entire funnel. We often find that $200 leads might convert into customers at a much higher rate than $50 leads. Lead quality is the critical counterbalancing metric here. Your target CPL depends entirely on your average deal value and close rate. Some businesses can happily pay $1,000 for a qualified lead, while others may need to stay under $50.

6. Return On Ad Spend (ROAS)

The last metric, and arguably the most important, is return on ad spend (ROAS).

This measures the total revenue generated for every dollar you spend on ads. If you spend $1,000 and get back $5,000 in revenue, that’s a 5x ROAS.

This metric ties everything together. Visibility gets you seen, CTR gets you clicked, conversion rates get you leads, and CPL measures the cost—but ROAS tells you if the whole system actually works. For most businesses, that's what matters: how much money do we get out for the money we put in?

A good target for most businesses is a 5x ROAS.

Why? Well if you assume your business has a 20% profit margin, a 5x ROAS means you're essentially breaking even on your ad spend.

$5,000 in revenue with a 20% margin is $1,000 profit, which covers your $1,000 ad spend.

While breaking even might not sound exciting, you’re acquiring a new customer for free, opening the door for an ongoing relationship and future value.

The key thing to remember is that it's not about any single one of these metrics. It's about understanding the connectivity between all of them.

When you see how visibility impacts clicks, how clicks impact conversions, and how it all flows down to your return on ad spend, you can start building a Google Ads system that works.