Question 1

What is ACoS and why is it important?

Accepted Answer

ACoS (Advertising Cost of Sales) is a metric that shows ad spend as a percentage of sales attributed to ads, calculated as Ad Spend ÷ Sales × 100. It helps you evaluate how efficient your Amazon ads are, compare campaigns, and decide whether to scale, optimize, or pause keywords and targets.

Question 2

Can I use this calculator for different currencies?

Accepted Answer

Yes. The calculator works with any currency as long as Ad Spend and Sales are entered in the same currency. Since ACoS is a percentage, the currency type does not affect the result.

Question 3

How accurate are the results provided by this tool?

Accepted Answer

The math is exact based on the numbers you enter, using the standard ACoS formula. Your practical accuracy depends on the quality of your input data, such as how Amazon attributes sales to ads and the date range you select in your campaign reports.

Question 4

Does the calculator work for both manual and automatic campaigns?

Accepted Answer

Yes. ACoS is calculated the same way for manual and automatic campaigns, as long as you have total ad spend and ad-attributed sales for the campaign, ad group, or target level you want to evaluate.

Question 5

Is any of my campaign data stored when I use this tool?

Accepted Answer

No. This calculator only uses the values you input to compute ACoS and does not store your campaign data. For privacy, avoid entering any sensitive notes or identifiers beyond spend and sales totals.

Amazon ACoS calculator

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