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Free CPA & CPM Calculation Tool

CPA Calculator

Calculate the cost per action of your ads based on CPM

Cost Per Mille (CPM):
Click-Through Rate (CTR):
%
Conversion Rate:
%

Your CPA:

₹0.00

1

Determine your cost per mille (CPM)

The first step is to determine your cost per mille (CPM), which is how much you pay for 1000 impressions on a given ad campaign. You can easily find this metric by using our CPM calculator.

2

Determine your click-through rate (CTR)

Next, input your click-through rate (CTR). If you don't already have this metric available, you can calculate it by dividing your total number of clicks by your total number of impressions, and then multiplying the result by 100. Your CTR should come out as a percentage, like 35%. Input that number (minus the percentage sign) into the calculator.

3

Determine your conversion rate

The third and final metric you need to plug into the calculator is your conversion rate. Conversion rate is a measure of how many of your clicks lead to conversions. Like CTR, it's calculated as a percentage. So, if you have 100 total clicks and 50 total conversions, you have a 50% conversion rate. In that example, you'd plug “50” into the calculator.

Determine Your Cost Per Mille (CPM)

The first step in understanding your campaign performance is calculating your cost per mille (CPM). CPM, also known as "cost per thousand impressions," tells you how much you're paying for every 1,000 ad impressions.
How to Calculate CPM:
CPM=Total Ad SpendTotal Impressions×1,000\text{CPM} = \frac{\text{Total Ad Spend}}{\text{Total Impressions}} \times 1,000CPM=Total ImpressionsTotal Ad Spend​×1,000
Use our CPM calculator to automate this process and get instant results.

Determine Your Click-Through Rate (CTR)

The next step is calculating your click-through rate (CTR), a key metric that measures audience engagement with your ad.
How to Calculate CTR:
Divide the total number of clicks by the total number of impressions, then multiply by 100:
CTR=Total ClicksTotal Impressions×100\text{CTR} = \frac{\text{Total Clicks}}{\text{Total Impressions}} \times 100CTR=Total ImpressionsTotal Clicks​×100
Input your CTR (as a percentage, e.g., 35%) into the calculator to proceed.

Determine Your Conversion Rate

Finally, you’ll need your conversion rate to complete the CPA calculation process. This metric measures how effectively your ad clicks lead to conversions, such as purchases or sign-ups.
How to Calculate Conversion Rate:
Use the following formula:
Conversion Rate=Total ConversionsTotal Clicks×100\text{Conversion Rate} = \frac{\text{Total Conversions}}{\text{Total Clicks}} \times 100Conversion Rate=Total ClicksTotal Conversions​×100
For example, if you have 100 clicks and 50 conversions, your conversion rate is 50%. Enter this percentage (e.g., 50) into the calculator.

Have Questions? We have Answers.

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Cost Per Action (CPA) is the amount you spend to acquire a desired action, such as a sale or lead.

Lower CPA means more efficient campaigns and higher ROI.

The cost per action formula is:
CPA=Total Ad SpendTotal Conversions\text{CPA} = \frac{\text{Total Ad Spend}}{\text{Total Conversions}}CPA=Total ConversionsTotal Ad Spend​

A CPA calculator simplifies the process, providing accurate results and saving time.

  • Refine audience targeting.
  • Improve ad quality and relevance.
  • Optimize landing pages for better conversion rates.

Several factors influence CPA, including ad targeting, bidding strategy, competition, ad quality, and landing page experience. Optimizing these elements can help reduce CPA and improve ROI.

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