How Do I Know If My Ads Are Actually Working? The Metrics That Matter

Most small businesses judge their ads by the wrong numbers. The Ads Manager dashboard shows dozens of metrics by default, and the loudest ones — impressions, reach, engagement — are also the least useful for deciding whether to keep spending. Here are the metrics that actually tell you whether your ads are working, in the order you should look at them.

Start at the bottom, not the top

Read your ad report from the bottom up: revenue and leads first, cost second, clicks and impressions last. If revenue and leads look right, everything above them can look weird and it still doesn't matter. If revenue and leads look wrong, no amount of high-CTR celebration will save the campaign.

The four metrics that actually matter

1. Cost per lead or cost per acquisition (CPL / CPA)

How much you paid in ad spend for each qualified lead or paying customer. This is the single most important number in your account. Compare it against your customer lifetime value — if you make $2,000 from an average customer and your CPA is $300, you're profitable. If your CPA is $2,500, you're losing money no matter how many likes the ad got.

2. Return on ad spend (ROAS)

For e-commerce, revenue divided by ad spend. A ROAS of 3 means every $1 spent brings back $3 in revenue. Break-even ROAS depends on your margins — a business with 30% margins needs a much higher ROAS than one with 70% margins to actually be profitable.

3. Conversion rate (from landing page)

The percentage of people who click your ad and then actually take the next step (book, buy, submit a form). If clicks are cheap but conversions are rare, the ad is working and your landing page is broken. If clicks are expensive but conversion rate is strong, fix the ad — the landing page is fine.

4. Frequency

How many times the average person has seen your ad. Under 1.5, most people haven't seen it enough to act. Over 4-5, you're annoying your audience and cost per lead usually spikes. This is the metric that tells you when to refresh your creative.

The metrics that lie

Impressions and reach only tell you the ad was shown, not that it worked. Click-through rate is a diagnostic, not a goal — a high CTR with a bad CPA usually means you're attracting the wrong audience. Engagement rate on ads is almost meaningless outside brand awareness campaigns. Ignore all of these unless you're using them to diagnose why a real metric is off.

How often to check

Weekly at most in the first month, monthly after that. Checking daily is how small business owners kill their own campaigns — every early tweak resets the algorithm's learning phase and makes cost per lead worse.

Want a second set of eyes on your account?

Book a free 30-minute consultation with Dunn Right Media and we'll walk through your ad account with you — no obligation, no upsell required.