CPA Calculator (Cost Per Acquisition)
CPA Calculator (Cost Per Acquisition)
CPA tells you how much you're paying, on average, for each conversion (sale, lead, sign-up, or whatever action you're tracking) — enter your total spend and number of conversions to see the cost per acquisition.
CPA on its own doesn't tell you whether a campaign is actually profitable — it only becomes a meaningful signal once compared against how much each conversion is actually worth, whether that's average order value for an e-commerce sale or estimated customer lifetime value for a subscription sign-up. A campaign spending 1,000 USD to generate 50 conversions at a 20 USD CPA is a great result if each customer is worth 100 USD, and a losing one if each is worth only 15 USD — which is exactly why CPA is usually reported alongside a value benchmark rather than as a standalone number.
- Formula: CPA = Total Spend ÷ Conversions.
- Example: 1,000 USD spend ÷ 50 conversions = 20 USD per conversion.
- Compare to value: a campaign is generally profitable when CPA is comfortably below the value each conversion brings in (e.g. average order value or customer lifetime value).
Is a lower CPA always better?
Usually yes, but not always — a slightly higher CPA from a channel that brings higher-value or more loyal customers can still be the better investment.
What counts as a "conversion"?
Whatever action you're measuring — a purchase, a form submission, a free trial sign-up, an app install — as long as you're consistent about what you count.
CPA Calculator (Cost Per Acquisition)
CPA tells you how much you're paying, on average, for each conversion (sale, lead, sign-up, or whatever action you're tracking) — enter your total spend and number of conversions to see the cost per acquisition.
CPA on its own doesn't tell you whether a campaign is actually profitable — it only becomes a meaningful signal once compared against how much each conversion is actually worth, whether that's average order value for an e-commerce sale or estimated customer lifetime value for a subscription sign-up. A campaign spending 1,000 USD to generate 50 conversions at a 20 USD CPA is a great result if each customer is worth 100 USD, and a losing one if each is worth only 15 USD — which is exactly why CPA is usually reported alongside a value benchmark rather than as a standalone number.
- Formula: CPA = Total Spend ÷ Conversions.
- Example: 1,000 USD spend ÷ 50 conversions = 20 USD per conversion.
- Compare to value: a campaign is generally profitable when CPA is comfortably below the value each conversion brings in (e.g. average order value or customer lifetime value).
Is a lower CPA always better?
Usually yes, but not always — a slightly higher CPA from a channel that brings higher-value or more loyal customers can still be the better investment.
What counts as a "conversion"?
Whatever action you're measuring — a purchase, a form submission, a free trial sign-up, an app install — as long as you're consistent about what you count.