CPA Calculator

Calculate campaign cost per acquired customer or conversion. Enter your own values below to see cost per acquisition and check the method behind it.

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Your inputs

Change the example values to match your situation.

Your result

Let’s work it out.

Fill in your inputs and select Calculate.
Your result and breakdown will appear here.

How this calculator works

CPA = campaign cost ÷ acquisitions.

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What is CPA Calculator?

CPA Calculator helps you calculate campaign cost per acquired customer or conversion.

The main result is cost per acquisition. The formula, example and assumptions below explain how to interpret it.

How to use CPA Calculator

Use the example to get familiar with the form, then enter your own figures. Any rates in the example are illustrative. Check the field labels and units before calculating.

  1. Gather campaign cost (₹) and acquisitions. Use values from the same situation or reporting period.
  2. Replace the example campaign cost with your own value, then complete the other fields. Check the displayed units.
  3. Select Calculate and read cost per acquisition. Change one input and calculate again to compare a second scenario. Reset restores the original example.
  • Enter campaign cost in ₹, at least 0. Decimals are accepted.
  • Enter acquisitions, at least 0.001. Decimals are accepted.

CPA Calculator: a worked example

With the inputs below, the result is ₹100 (cost per acquisition). Follow the example, then replace these illustrative values with your own.

Example inputs and output
Input or outputExample value
Campaign cost (₹)₹5,000
Acquisitions50
Cost per acquisition₹100

Understanding the CPA result

The main output is cost per acquisition, expressed in ₹. It applies to the inputs and operation you selected.

Displayed results use a readable number of decimal places. When checking a result by hand, keep extra precision until the last step. To compare scenarios, change one input at a time and keep the others fixed.

CPA Calculator: assumptions and common mistakes

A useful estimate starts with the right inputs. Check the following assumptions and limits before applying the result to your situation.

  • Match numerators and denominators from the same reporting period. Creator RPM is revenue per thousand views, while advertiser CPM measures spending.

For wider guidance, visit Google Ads Help. The formula and scope of this specific tool are stated on this page.

CPA Calculator FAQs

What does CPA Calculator calculate?

CPA Calculator helps you calculate campaign cost per acquired customer or conversion. Its main output is cost per acquisition in ₹.

What inputs do I need for CPA Calculator?

You need campaign cost (₹) and acquisitions. Use the field labels and units to match your figures to the formula.

Which formula does CPA Calculator use?

CPA = campaign cost ÷ acquisitions.

What is a worked example for CPA Calculator?

Example inputs: Campaign cost: ₹5,000; Acquisitions: 50. The result is ₹100 (cost per acquisition).

How should I enter campaign cost?

Enter campaign cost in ₹, at least 0. Decimals are accepted.

How do I choose acquisitions?

Enter acquisitions, at least 0.001. Decimals are accepted. The example uses 50; replace it if your circumstances differ.

How should I read cost per acquisition?

The main output is cost per acquisition, expressed in ₹. It applies to the inputs and operation you selected.

Why might my CPA Calculator result differ from my records?

Match numerators and denominators from the same reporting period. Creator RPM is revenue per thousand views, while advertiser CPM measures spending. Differences in entered values, units or rounding can also change the comparison.

Can I compare two scenarios in CPA Calculator?

Yes. Note your first cost per acquisition, change campaign cost or another input, and select Calculate again. Editing a field clears the old result so it is not mistaken for a new calculation.

Is CPA Calculator free, and where are my inputs calculated?

This calculator is free to use without signing in. Its formula runs in your browser; calculator inputs are not sent to a calculation API. The inputs reset to the example values when you reset the form or start a fresh page.