CPA Calculator
Calculate your cost per acquisition (CPA). This free online business & marketing calculator runs entirely in your browser — no signup, no data sent anywhere.
Inputs
Results
How It Works (Formula & Method)
Cost per acquisition is spend divided by conversions — the average cost to acquire one customer or lead. Keep CPA below the value of a customer (or your target margin) for the campaign to be profitable.
Worked Example
Below is a worked example using the calculator's default values. The same numbers are pre-filled in the form above so you can press Calculate and see the result without typing anything.
Inputs used:
- Total Ad Spend ($): 500
- Conversions: 20
With these inputs, the calculator computes the metrics shown in the Results panel. Change any value and press Calculate again to see how the result responds — the live widget and the chart both update instantly.
Frequently Asked Questions
What does the CPA Calculator compute?
The CPA Calculator takes 2 input values and returns 1 result. Calculate cost per acquisition (CPA) — the average cost to win one conversion — from your ad spend and number of conversions.
Is my data sent to a server?
No. The CPA Calculator runs entirely in your browser using static JavaScript. Your inputs are never transmitted to CalculatorHive or any third party, and nothing is stored after you close the page.
Is this calculator free to use?
Yes. Every calculator on CalculatorHive is completely free. There is no signup, no paywall, and no usage limit. The site is supported by display advertising and affiliate partnerships, which are clearly labeled.
How accurate is the result?
The math is mathematically exact for the inputs you provide. Real-world accuracy depends on how accurately your inputs reflect the real situation — defaults are typical values, not guarantees.