Amazon ROAS, ACoS & TACoS Calculator

Free Amazon Advertising Tool

Amazon ROAS, ACoS & TACoS Calculator

Enter your Amazon ad spend, ad-attributed sales, and total sales to instantly calculate your advertising metrics and organic sales share.

✓ Instant results ✓ No signup required ✓ Includes TROAS
Your Data

Enter your performance

Use figures from the same reporting period and attribution basis.

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Important: Amazon advertising and total-sales reports can use different attribution windows. Use matching dates whenever possible.
Your Results

Advertising metrics

Calculated
ROAS 4.00x Ad sales ÷ ad spend
ACoS 25.0% Ad spend ÷ ad sales
TACoS 12.5% Ad spend ÷ total sales
Total ROAS / TROAS 8.00x Total sales ÷ ad spend
Organic Sales $20,000.00 Total sales minus ad sales
Organic Sales Share 50.0% Estimated organic percentage
Ad-Attributed Share 50.0% Ad sales ÷ total sales

Moderate advertising reliance

Advertising generated half of the entered total revenue. Review performance alongside profitability and organic growth trends.

What your results mean

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    How It Works

    Amazon advertising formulas

    ROAS

    Ad Sales ÷ Ad Spend

    ROAS shows how much ad-attributed revenue was generated for each dollar spent on advertising.

    ACoS

    Ad Spend ÷ Ad Sales

    ACoS shows the percentage of ad-attributed revenue consumed by advertising.

    TACoS

    Ad Spend ÷ Total Sales

    TACoS measures advertising spend relative to all Amazon revenue, including organic sales.

    Total ROAS

    Total Sales ÷ Ad Spend

    TROAS shows the total Amazon revenue supported by each dollar of advertising spend.

    Interpreting the Metrics

    What is a good Amazon ACoS or ROAS?

    There is no single ACoS or ROAS target that is profitable for every Amazon product. Your appropriate target depends on product margin, Amazon fees, fulfillment costs, pricing, returns, and your growth goals.

    A lower ACoS is not automatically better if advertising reductions also cause total sales, organic rank, or new-customer acquisition to decline. Likewise, a high ROAS does not guarantee profitability when product margins are low.

    Calculate your break-even ACoS and profit
    ACoS Measures ad-attributed efficiency
    TACoS Measures advertising against total revenue
    ROAS Shows ad revenue generated per $1 spent
    TROAS Shows total revenue generated per $1 spent
    Frequently Asked Questions

    Amazon advertising metric FAQs

    What is the difference between ACoS and TACoS?

    ACoS divides ad spend by ad-attributed sales. TACoS divides ad spend by total Amazon sales. TACoS therefore includes the effect of organic revenue, while ACoS evaluates only ad-attributed revenue.

    What is the relationship between ACoS and ROAS?

    ACoS and ROAS are inverse measurements. An ACoS of 25% equals a ROAS of 4.00x. A ROAS of 5.00x equals an ACoS of 20%.

    Does a low TACoS mean my account is profitable?

    Not necessarily. TACoS measures advertising spend relative to total sales, but it does not include product costs, Amazon fees, fulfillment expenses, returns, or overhead.

    Why can ad-attributed sales exceed total sales?

    This can happen when reports use different attribution windows, time zones, sales definitions, or adjustment timing. Make sure the figures use comparable dates and reporting methods.

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