What Is Cost Per Conversion?
Cost per conversion (also written as cost/conv) is a key paid advertising metric that tells you how much you spent, on average, to achieve a single desired action. A conversion can be any goal you define: a form submission, a phone call, a product purchase, a newsletter sign-up, or an app download. The formula is straightforward: divide your total ad spend by the total number of conversions in the same period.
In Google Ads, cost per conversion is displayed directly in your campaign reports and can be tracked automatically when you link a conversion action such as a contact form submission or a purchase confirmation page. Meta Ads Manager reports the same metric, often labelled as cost per result, aligned to your campaign objective.
Understanding your cost per conversion is essential for judging whether a campaign is profitable. If your average customer is worth R3,000 to your business and you are paying R2,500 to acquire each one, your margins are thin. If you are paying R300 per conversion, your campaigns are working hard for you.
How to Reduce Cost Per Conversion
The two levers that control cost per conversion are the cost of each click (CPC) and the percentage of those clicks that convert (conversion rate). Lowering your CPC through better Quality Scores, more precise audience targeting, and negative keyword lists reduces spend without sacrificing volume. Improving your landing page, its speed, its clarity of message, and its single clear call to action, lifts your conversion rate so each rand of spend produces more results.
South African advertisers often find that localising their landing pages, using South African English, referencing local pricing in rands, and displaying local trust signals such as Google reviews, significantly lifts conversion rates and therefore lowers cost per conversion without touching bids at all.
FAQ
What is a good cost per conversion for Google Ads in South Africa?
A good cost per conversion depends on your industry and the value of each customer. As a rule of thumb, your cost per conversion should be no more than 10-20% of the average transaction value. For a R5,000 service, a cost per conversion below R500-R1,000 is generally healthy.
How do I calculate cost per conversion?
Divide your total ad spend by the number of conversions in the same period. For example, if you spent R10,000 and generated 25 leads, your cost per conversion is R400. Track this in Google Ads or via your analytics platform.
What is the difference between cost per conversion and cost per acquisition?
Cost per conversion measures the cost of any defined action such as a form fill, call, or purchase. Cost per acquisition (CPA) typically refers specifically to the cost of acquiring a paying customer. CPA is usually higher because not all conversions become paying customers.