CPA Calculator — Cost Per Acquisition (Free)
Free CPA calculator: enter ad spend and conversions to get your cost per acquisition instantly — the cost of each result your campaign produced.
Your CPAEnter values to see your result
Enter your ad spend and the number of conversions to calculate CPA (cost per acquisition) instantly — how much each result cost you.
How CPA is calculated
CPA = Ad spend ÷ Conversions
If a campaign spends 1,200 and produces 40 conversions, CPA = 1,200 ÷ 40 = 30 per acquisition. A good CPA is any CPA below your maximum profitable acquisition cost.
Read the full guide: CPA, good benchmarks, and CPA vs CAC.CPA guide →
Frequently asked questions
- How do I calculate CPA?
- Divide your ad spend by the number of conversions. For example, 1,200 in spend with 40 conversions is a CPA of 30. This calculator computes it instantly.
- What is a good CPA?
- A good CPA is one below your maximum profitable acquisition cost, which depends on your average order value (or lead value) and margin. Compare the result to your own target, not a universal number.