Ad platforms hand you dozens of metrics the moment you open a dashboard. Which ones should you keep an eye on? Where do you look when things go wrong?
Say your CTR drops. Is it the offer or the creative tiring out? How do you tell if a competitor's new ad is pulling attention away from yours?
Here are 14 ad performance metrics that matter.
Reach and visibility ad performance metrics
Before an ad can convert anyone, it has to get seen. These metrics tell you how far your campaign is traveling and what it costs you to get there.
Impressions count how many times your ad showed up on someone's screen. It doesn't tell you if anyone noticed it, just that it appeared.
Impressions matter most early in a campaign, when your goal is building awareness.
CPM (cost per thousand impressions) tells you how efficiently you're buying that reach. You calculate it by dividing your total spend by your total impressions, then multiplying by 1,000.
A rising CPM without any change in your targeting usually means more advertisers are bidding for the same audience. So it's worth checking who else is showing up in that space before you assume your own campaign is the problem.
Share of voice comes in handy here. It measures how much of the advertising conversation in your category you own compared to your competitors.
If your CPM is climbing, for example, and your share of voice is shrinking at the same time, it means you're paying more for reach but still losing ground to someone else's campaign.
Most businesses can't see what their competitors are running, so they ignore this metric even though it explains a lot of what shows up in their other numbers.
Engagement and relevance metrics
Once your ad gets in front of someone, the next question is whether it holds their attention. These metrics show you if your message is landing.
CTR (click-through rate) measures the percentage of people who saw your ad and clicked on it. You calculate it by dividing total clicks by total impressions.
A low CTR often means one of two things: either the wrong audience is seeing your ad, or the right audience is seeing it, but the creative isn't giving them a reason to click.
Either way, CTR is a good early warning sign, but it won't tell you which of those two problems you actually have.
Engagement rate goes a step further and looks at likes, shares, comments, and other interactions. Calculate it by dividing total engagements by total impressions.
This one matters most for social and content-driven campaigns, where the goal is building some kind of connection with the audience first.
Both of these metrics tell you that something is or isn't working, but neither tells you what part of the ad is responsible.
Hook rate (sometimes called thumb-stop ratio) points you in the right direction. It measures how many people stop scrolling to watch or engage with your ad in the first few seconds, before they've had time to read any copy or consider an offer.
A weak hook rate almost always points to the opening seconds of the creative itself rather than the targeting or the offer behind it.
To see this metric, you have to look at the ad itself rather than just the numbers around it. Without it, teams often waste weeks testing new audiences or offers when the solution was a stronger opening frame or headline.
Cost efficiency metrics
Reach and engagement matter, but at some point you need to know what you're paying for results. These metrics keep tabs on your budget.
CPC (cost per click) is what you pay each time someone clicks your ad. Calculate it by dividing total ad spend by total clicks.
CPC is useful for managing budget day to day, but it's easy to misread on its own. A low CPC feels like a win, until you realize those clicks aren't turning into anything.
CPA (cost per acquisition) fixes this. It measures how much you're spending for each completed action, whether that's a purchase, a sign-up, or a lead.
Calculate it by dividing total spend by the number of acquisitions. CPA is the more honest metric of the two, since it's tied to a real outcome rather than just a click.
A campaign can have a great CPC and a terrible CPA at the same time.
That means the ad is doing its job of getting attention and clicks, but something after the click (like the landing page or the offer) is losing people before they convert.
When you see that pattern, look at what happens right after someone clicks it.
The reverse can happen too.
A high CPC with a strong CPA can still be a profitable campaign, especially if you're targeting a smaller, more qualified audience. Don't judge either metric in isolation.
Look at them together, and use the gap between them to figure out which part of the funnel needs attention.
Conversion and revenue metrics
These metrics measure business impact instead of attention.
Conversion rate is the percentage of people who take the action you want after engaging with your ad, like completing a purchase or filling out a form. Calculate it by dividing total conversions by total clicks.
It's one of the clearest signals of whether your campaign is really working, since it connects everything upstream (your targeting, your creative, your offer) to a real result.
ROAS (return on ad spend) tells you how much revenue you're generating for every dollar you put into a campaign. Calculate it by dividing revenue by ad spend.
If you spend $1,000 and generate $4,000 in revenue, your ROAS is 4:1, or 400%. ROAS is the metric most performance marketers report, because it directly ties ad spend to revenue in a way that's easy to explain.
ROI (return on investment) gets confused with ROAS, but they're not the same thing. ROAS looks at revenue against spend while ROI compares profit against spend. It accounts for your costs beyond the ad budget, like production or the cost of goods sold, even staffing.
Using the same example, if that $4,000 in revenue only left you with $1,500 in profit after costs, your ROI is 150%, instead of 400%. ROAS tells you if a campaign is generating revenue. ROI tells you if it's really making you money.
Don't treat ROAS as the finish line. A campaign can have a strong ROAS and still be unprofitable when you factor in margins. That's why the two metrics need to be tracked side by side.
Retention and long-term value
Most of the metrics we've discussed so far focus on what happens right after someone sees or clicks your ad.
These two branch out and ask a longer-term question: is the customer you acquired really worth what you spent to get them?
LTV (lifetime value) predicts the total revenue a customer will generate during their entire relationship with your business. Calculate it by multiplying average purchase value by purchase frequency and average customer lifespan.
LTV changes how you should think about acquisition cost. A customer who costs more upfront but sticks around and buys repeatedly can be worth far more than one who's cheaper to acquire but churns after a single purchase.
CAC (customer acquisition cost) measures how much you spend, in total, to acquire a single customer. Calculate it by dividing total acquisition spend by the number of new customers.
On its own, CAC just tells you a cost. Combined with LTV, it tells you whether that cost makes sense.
Your LTV to CAC ratio is essential.
If a customer costs you $50 to acquire and is worth $200 over their lifetime, that's a 4:1 ratio. Not bad.
But if that ratio drops closer to 1:1, you're spending almost as much to get a customer as they're worth, which isn't sustainable no matter how good your other metrics look.
A campaign with a great ROAS can be a problem. If you're optimizing so hard for immediate conversions that you're pulling in customers who buy once and never come back, your short-term numbers will look great while your long-term LTV to CAC ratio quietly gets worse.
Creative performance and competitive benchmarking
Everything covered so far tells you what happened. This section is about figuring out why, and what your competitors are doing that you can't see from inside your own ads manager.
Video completion rate measures how many people watch your video ad all the way through, often broken into 25%, 50%, 75%, and 100% markers.
A steep drop-off at the 25% mark points to a weak hook, while a drop-off near the end usually means the ad ran too long or the offer showed up too late.
Either way, completion rate tells you exactly where in the ad people lose interest, which is far more useful than a single engagement number.
But creative metrics only tell half the story if you're only looking at your own ads.
The harder question is, how does your creative compare to what's working for competitors in your space right now?
Most brands and agencies struggle with this. You can see your own CTR drop, but you can't see that a competitor just launched a new ad angle that's pulling attention away from yours. Or that an entire format your category relies on is starting to fatigue across the board.
We built Atria around this problem.
Instead of just reporting on your own numbers, Atria lets you pull up any competitor's ad library and see which creative angles, formats, and hooks are getting traction.
When you can see that a competitor's top ad leads with a specific problem statement in the first three seconds, your next creative test will be against something you know is already working.
Competitive creative intelligence gives your own performance metrics context. A dropping CTR means something different once you know why.
A dropping CTR means something different when you can see three competitors just launched near-identical offers in your category, when nothing in your strategy has changed.
How to choose which ad performance metrics matter for your goals
With this many metrics available, how do you know which ones match what you're trying to achieve with a given campaign?
If your goal is awareness, focus on impressions, CPM, and share of voice. Clicks aren't your priority yet. You're trying to understand how far your message is traveling and how much of the conversation in your category you're capturing compared to competitors.
If your goal is consideration, shift toward CTR, engagement rate, and hook rate. At this stage, people already know you exist. The question is whether your creative is compelling enough to make them stop and pay attention.
Go with CPA, conversion rate, and ROAS if your main goal is conversion. They'll show you if all that attention is turning into revenue.
For long-term growth, LTV and CAC matter more than anything happening inside your ads manager. A campaign optimized purely for short-term conversions can still be a bad investment if the customers it brings in don't stay for long.
The mistake advertisers make is picking one or two metrics and tracking them for every campaign, regardless of what stage that campaign is in.
A great CTR means very little if the goal was long-term customer value, just like LTV isn't something you should be judging a brand-new awareness campaign on yet.
14 Ad Performance Metrics: Quick Reference
A summary of all metrics covered in the article, grouped by what they measure.
| Group | Metric | What it does |
|---|---|---|
| Reach and visibility | Impressions | Counts how many times your ad was displayed. Shows reach, rather than attention. |
| CPM | Cost per 1,000 impressions. Shows how efficiently you're buying reach. | |
| Share of Voice | Your share of the ad conversation in your category compared to competitors. | |
| Engagement and relevance | CTR | Percentage of viewers who click. Signals ad relevance and audience fit. |
| Engagement rate | Percentage of impressions that get likes, shares, or comments. Signals content resonance. | |
| Hook rate | Percentage who stop scrolling in the first few seconds. Signals strength of the opening. | |
| Cost efficiency | CPC | Cost per click. Shows budget efficiency for driving traffic. |
| CPA | Cost per completed action. Shows cost efficiency tied to a real outcome. | |
| Conversion and revenue | Conversion rate | Percentage of clicks that complete the desired action. Shows funnel effectiveness. |
| ROAS | Revenue generated per dollar spent. Shows revenue efficiency. | |
| ROI | Profit generated per dollar spent, after costs. Shows true profitability. | |
| Retention and long-term value | LTV | Total revenue expected from a customer over their lifetime. Shows long-term value. |
| CAC | Total cost to acquire one customer. Combined with LTV to judge sustainability. | |
| Creative performance | Video completion rate | Percentage of viewers who watch your video ad all the way through. Shows exactly where attention drops off. |
Half the Picture Isn't Good Enough
Tracking ad performance metrics is about knowing which ones matter in your campaign.
Most marketers have a solid handle on the basics, like CTR, CPA, and ROAS. Far fewer are tracking hook rate or video completion, and almost none have any visibility into what's driving performance for competitors in their space.
That last piece is often the difference between guessing at your next creative test and testing against something you already know works.
If you're only looking at your own numbers, you're only getting half the picture.
Want to see what's already working for your competitors? Try Atria, with no credit card required.
FAQ: Ad Performance Metrics You Should Track
What's a good CTR or ROAS benchmark?
The definition of a good CTR or ROAS benchmark depends on your channel and industry. So treat any single benchmark number with some caution. As a rough guide, paid social CTR typically falls between 1% and 2.2%, with anything above that considered strong. Search ads often run higher.
For ROAS, many advertisers aim for at least 4:1, but weigh that number against your margins. A 4:1 ROAS on a low-margin product can still be unprofitable once you factor in ROI.
How is ROAS different from ROI?
ROAS measures revenue generated against ad spend, while ROI measures profit against spend after accounting for other costs like production or cost of goods sold. A campaign can have an impressive ROAS and a mediocre ROI at the same time, which is why you should track both.
How often should I check these metrics?
Check reach and engagement metrics (impressions and CTR) weekly since they respond quickly to changes in creative or targeting.
Review cost and conversion metrics (CPA and ROAS) every one to two weeks to give the data enough time to stabilize. Long-term metrics like LTV need much longer windows (months), since they depend on customer behavior that takes time to play out.
How can I track what my competitors are doing with their ad creative?
You can track what your competitors are doing with their ad creative with tools like Atria, which are built for this purpose. They let you pull up a competitor's ad library and see which creative angles and formats are getting traction in your category.
