How to tell if your ads are working: a plain guide to conversion tracking
What conversion tracking is, which results to track for a small business, how to set it up, and which ad numbers matter most.
By Gerya Freitas, Founder of GDF DigitalPublished 3 min read
The short answer
Your ads are working if they bring in customers at a cost you're comfortable with. To know that, you need conversion tracking: a setup that records when someone who clicked your ad takes a valuable action, such as calling, submitting a form, booking, or buying. Track those actions in Google Ads or Meta, then compare the cost per lead or sale with what a customer is worth to you. Clicks and impressions alone don't tell you whether ads are paying off.
It’s easy to look at an ad dashboard full of numbers and still not know the answer to the only question that matters: are these ads bringing in customers? Conversion tracking is how you find out.
What conversion tracking is
Conversion tracking records what people do after clicking your ad. When someone takes an action you care about, it counts as a conversion and is linked back to the ad that brought them.
Without it, you only see what happens on the ad platform: views and clicks. With it, you see what happens on your side: leads and sales.
What to track
Choose the actions that matter for your business. For most small businesses, that’s one or more of:
- Form submissions: contact, quote, or booking forms
- Phone calls: from the ad itself or from your website
- Bookings: appointments scheduled online
- Purchases: sales in your online store
- Key steps: for longer decisions, actions like downloading a guide or starting a checkout
Focus on a few meaningful actions rather than tracking everything.
How to set it up
The details vary by platform, but the steps are similar:
- Decide your conversions. List the actions that matter, as above.
- Add tracking to your website. Install the Google tag for Google Ads, and the Meta Pixel for Facebook and Instagram ads. Many website platforms let you add these through simple settings or integrations.
- Create conversion actions in each ad platform, matching the actions you chose.
- Use a thank-you page or event that fires when a form is successfully submitted, so only real submissions are counted.
- Set up call tracking if phone calls are important to your business.
- Test everything. Submit a test form and make sure it shows up as a conversion.
The numbers that matter
Once tracking works, focus on these:
- Conversions: how many leads or sales your ads produced.
- Cost per conversion: total ad spend divided by conversions.
- Conversion rate: the share of clicks that became conversions. A low rate often points to the landing page rather than the ad.
- Lead-to-customer rate: how many leads actually became paying customers. You track this in your CRM or records.
- Return: compare what you spent with what those customers are worth.
Treat clicks, impressions, and click-through rates as diagnostic numbers: useful for improving ads, but not proof of results.
Filling in the gaps
Tracking will never capture everything. People see an ad, then search for you later, call from a different number, or visit in person. A few simple habits help:
- Ask every new customer how they heard about you.
- Note the source in your CRM. See what a CRM is.
- Look at overall trends: did inquiries rise when ads were running?
The bottom line
Ads are working when they bring in customers at a cost that makes sense for your business. Set up conversion tracking for the actions that matter, focus on cost per lead and lead-to-customer rate, and fill the gaps by asking customers how they found you.
For budgeting, see how much a small business should spend on paid ads. If you’d like help setting up tracking and campaigns, our paid advertising service includes it, or tell us about your current ads.
Common questions
What is a conversion?
A conversion is any valuable action you want people to take after clicking an ad, such as a phone call, form submission, booking, or purchase. You decide which actions count.
Do I need a developer to set up conversion tracking?
Not always. Many website platforms and form tools connect to Google Ads and Meta with built-in settings. More complex setups, such as tracking calls or multiple forms, often benefit from professional help.
Why don't my ad results match my sales?
Tracking is never perfect. Some people see an ad, then call later or visit in person, and privacy settings can limit what's recorded. Ask new customers how they found you to fill in the gaps.