CPA Calculator

Calculate CPA, conversions, or total ad spend.

Percentage CPM CPC CPA

Enter Your Values – CPA Calculations

Key calculations for media planning and budgeting.

Formulas:

  • Total ad spend = CPA × Conversions
  • CPA = Total ad spend ÷ Conversions
  • Conversions = Total ad spend ÷ CPA

What is CPA?

CPA stands for cost per acquisition — the average amount you spend to generate one conversion (like a purchase, lead, sign‑up, or booking). It’s one of the clearest ways to judge whether a campaign is efficient and scalable.

How to calculate CPA

Example

If you spend $2,000 and generate 50 conversions:

CPA = 2,000 ÷ 50 = $40 per conversion

What this CPA calculator can do

Enter any two fields and we’ll calculate the third:

Example: how much budget you need

If your target CPA is $25 and you want 120 conversions:

Total spend = 25 × 120 = $3,000

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FAQ

What is CPA?

CPA stands for cost per acquisition — how much you spend per conversion (sale, lead, sign‑up, etc.).

How do you calculate CPA?

CPA = Total ad spend ÷ Conversions.

What counts as an acquisition?

An acquisition is the conversion you’re optimizing for (e.g., purchase, lead, sign‑up) based on your tracking setup.

When should I use CPA vs CPC?

Use CPA when you care about conversion efficiency. CPC measures click cost; CPA measures conversion cost.