CPA Calculator

Calculate your cost per acquisition (CPA) instantly and see how much you spend on average to generate a conversion from your Google Ads, Meta Ads, LinkedIn Ads or TikTok Ads campaigns.

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Your CPA
€50.00
CPA = Advertising spend ÷ Number of conversions

Low CPA — Efficient

Your acquisition cost is under control relative to your target. Make sure it still makes sense in relation to your margins and the value generated by each customer or conversion.

Low CPA
Efficient

Your acquisition cost is under control relative to your target. Make sure it still makes sense in relation to your margins and the value generated by each customer or conversion.

Mid-range CPA
Review

Your CPA may be acceptable or may need optimisation depending on your industry, margins, customer value and profitability targets.

High CPA
Optimise

Your acquisition cost is high. Review your targeting, creatives, offer, conversion funnel and landing pages to identify opportunities for improvement.

Understanding Cost per Acquisition (CPA)

CPA, or Cost per Acquisition, measures the average amount spent on advertising to generate one conversion.

Depending on your business, a conversion may be a purchase, a quote request, a sign-up, a booking, a lead or any other action that matters to your company.

The formula is simple:

‍CPA = Advertising spend ÷ Number of conversions

‍CPA is particularly useful for measuring the efficiency of Google Ads, Meta Ads, LinkedIn Ads or TikTok Ads campaigns and for comparing different acquisition channels.

At Infini Digital, we analyse CPA alongside other metrics such as ROAS, conversion rate and customer value to determine whether a paid media strategy is actually generating profitable growth.

Data Graphic Clearer data.
Better marketing decisions.

How to use this CPA calculator

1

Enter your advertising spend

Enter the total amount invested in your advertising campaigns over the period you want to analyse. This can include spend across Google Ads, Meta Ads, LinkedIn Ads, TikTok Ads or any other paid media channel.

2

Enter your number of conversions

Enter the number of conversions generated over the same period. Depending on your objective, a conversion may be a purchase, lead, sign-up, booked appointment or quote request.

3

Analyse your CPA

The calculator divides your advertising spend by the number of conversions and instantly displays your average cost per acquisition. You can then compare your CPA with your margins, average customer value and profitability targets.

What is a good CPA?

There is no universal ideal CPA.

A good CPA depends on your industry, margins, average customer value and overall business model.

For example, a €50 CPA may be too high for a product that sells for €30, but highly profitable for a business that generates several thousand euros in revenue from each new customer.

The key question is therefore not simply whether your CPA is “low”, but whether it remains lower than the economic value generated by the acquisition.

FOR EXAMPLE:

€5,000 advertising spend ÷ 100 conversions = €50 CPA

This means your business spends an average of €50 in advertising to generate one conversion.

If each new customer generates significantly more than €50 in margin, that CPA may be profitable. If not, it may need to be reduced.

CPA, ROAS and CPC:
what’s the difference?

CPA — Cost per Acquisition

CPA measures how much you spend on average to generate one conversion. It helps you understand the acquisition cost of a customer, lead or other defined action. CPA = Advertising spend ÷ Number of conversions

ROAS — Return on Ad Spend

ROAS measures how much revenue your advertising generates compared with your ad spend. It helps you evaluate the direct financial return generated by your campaigns. ROAS = Revenue generated from advertising ÷ Advertising spend

CPC — Cost per Click

CPC measures how much you pay on average for each click on an ad. CPC therefore measures the cost of generating traffic, while CPA measures the cost of generating a conversion. CPC = Advertising spend ÷ Number of clicks

Frequently asked questions about ROAS

What is a good CPA?
How do you calculate CPA?
How can I reduce my CPA?
What is the difference between CPA and ROAS?
Can I use this calculator for Google Ads and Meta Ads?

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Want to improve your advertising performance?

Is your CPA too high, or are you unsure whether it is actually profitable?

Infini Digital helps businesses optimise Google Ads, Meta Ads and other paid acquisition channels.

We analyse your campaigns, tracking, targeting, creatives and conversion funnel to identify the main opportunities for growth.

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