Free Amazon ACoS Calculator.
Calculate ACoS, ROAS, profit, and margin in one click across Amazon marketplaces. Built by Sequence Commerce operators who manage $500M+ in client revenue. No signup, no email, no upsells. No usage limits.
Amazon ACoS Calculator
Multi-marketplace · ACoS · ROAS · Profit · Margin
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What is ACoS?
Here is how ACoS works.
ACoS (Advertising Cost of Sales) is an Amazon PPC metric that measures how much you spent on ads as a percentage of the sales those ads generated. It tells you how many cents you spent to earn $1 in ad-attributed sales.
ACoS is the operational metric for Amazon Sponsored Products, Sponsored Brands, and Sponsored Display campaigns. Lower ACoS means more efficient spend. What counts as low depends on category. A 12% ACoS is strong in supplements and hard to hit in beauty outside branded terms.
Sequence Commerce manages Amazon PPC for 100+ brands, including Heinz, Nestlé, Catelli, Joe Boxer, and VASANTI. We built this calculator on the same formulas we run across $500M+ in client revenue.
How to calculate Amazon ACoS in four steps.
The math is straightforward. The harder part is knowing what a good number looks like in your category, which the benchmark table below covers.
Pull your ad spend
From the Amazon Ads console, pull total spend for the campaign or date range you want to measure.
Pull your ad-attributed sales
From the same report: total sales revenue attributed to those campaigns. Use the same date range.
Divide spend by sales
Ad spend ÷ ad-attributed sales. Multiply by 100 to convert the decimal to a percentage.
Compare to your benchmark
Use the benchmark table below to see what good ACoS looks like in your category.
What your ACoS results mean.
Not sure what to do with the numbers? Here's how to read the four outputs and turn them into a real bid decision.
ACoS %
Your core efficiency signal. Compare it against your category's healthy range in the benchmark table below. If you're above the healthy band, tighten bids or cut poor-performing search terms first.
ROAS ×
The same signal as ACoS, expressed as a multiplier instead of a percentage. Useful when reporting to stakeholders who run Google or Meta campaigns alongside Amazon.
Profit
Sales minus ad spend only. This is not net profit. It excludes COGS (cost of goods sold), FBA fees, and storage. Use it as a directional signal, not a P&L number.
Margin %
Ad-level margin after spend. Compare your ACoS to your gross margin. If ACoS is higher than your gross margin percentage, the campaign is losing money at the product level.
ACoS vs ROAS vs TACoS.
Three Amazon advertising metrics that look similar and measure different things. Here's when each one matters most.
| Metric | ACoS | ROAS | TACoS |
|---|---|---|---|
| What it measures | Ad spend as % of ad-attributed sales | Sales return per $1 of ad spend | Ad spend as % of TOTAL sales (paid + organic) |
| Formula | (Ad spend ÷ Ad sales) × 100 | Ad sales ÷ Ad spend | (Ad spend ÷ Total sales) × 100 |
| Direction | Lower is better | Higher is better | Lower is better (over time) |
| Example | 20% means $0.20 spent per $1 in ad sales | 5× means $5 in sales per $1 spent | 8% means ads = 8% of all your sales |
| Use it for | Campaign-level efficiency | Same as ACoS, different math | Account-level health and organic lift |
| Bottom line | The day-to-day operator metric | Same data as ACoS, just inverted | The account-level metric to watch over time |
What is a good ACoS by Amazon category?
There is no universal good ACoS. It depends on your category, product margins, and goal: launch, scale, or maintain. These ranges come from campaigns Sequence Commerce runs across 100+ Amazon and Walmart brands, covering $500M+ in client revenue.
| Category | Healthy ACoS | Launch ACoS | Branded ACoS |
|---|---|---|---|
| Supplements & Vitamins | 12–22% | 25–40% | 5–10% |
| Beauty & Personal Care | 20–30% | 35–50% | 8–14% |
| Apparel & Accessories | 22–32% | 38–55% | 10–16% |
| Consumer Electronics | 25–35% | 40–60% | 12–18% |
| CPG & Grocery | 10–18% | 22–32% | 4–8% |
| Home & Kitchen | 18–28% | 32–48% | 7–12% |
| Pet Supplies | 15–25% | 28–42% | 6–11% |
| Sports & Outdoors | 20–30% | 35–52% | 9–14% |
| Baby & Kids | 18–28% | 32–48% | 7–13% |
| Industrial & B2B | 22–35% | 40–60% | 10–18% |
Ranges drawn from Sequence Commerce category benchmarks across 100+ brands, Amazon US and Canada. Your specific number depends on product margin, price point, and competitive intensity.
Free Amazon advertising calculators, all in one place.
Sequence Commerce built these free tools for Amazon operators. No signup, no email gate, no usage limits.
Amazon ROAS Calculator
Return on ad spend: the same data as ACoS, inverted. Useful for cross-channel comparison.
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What is ACoS in Amazon advertising?
ACoS (Advertising Cost of Sales) is an Amazon PPC metric that measures how much you spent on ads as a percentage of the sales those ads generated. It's calculated as (ad spend ÷ ad-attributed sales) × 100. A 20% ACoS means you spent $0.20 in ads for every $1 of ad-attributed sales. Lower ACoS means more efficient spend, but good depends on category, product margin, and campaign goal.
How do I calculate Amazon ACoS?
Divide your total ad spend by your total ad-attributed sales, then multiply by 100. Example: $300 ad spend ÷ $1,500 ad sales × 100 = 20% ACoS. Use the same date range for both numbers. Use the calculator above to run the math across 18 Amazon marketplaces.
What is a good ACoS percentage on Amazon?
A good ACoS depends on category and goal. For established brands maintaining steady sales, healthy ACoS typically runs between 10% and 35%, depending on category. For launches (where you want fast rank), 25% to 50% is acceptable. For branded keywords, ACoS typically runs between 4% and 18%, depending on category. See the benchmark table above for category-specific ranges from Sequence Commerce's $500M+ in client revenue.
What is the difference between ACoS and ROAS?
ACoS and ROAS use the same data, just inverted. ACoS = ad spend as a percentage of sales (lower is better). ROAS = sales generated per $1 of ad spend (higher is better). A 20% ACoS equals a 5× ROAS. Most Amazon operators speak in ACoS because Amazon's ad reports default to that metric. Most cross-channel operators (Google, Meta) speak in ROAS.
What is TACoS and how is it different from ACoS?
TACoS (Total Advertising Cost of Sales) measures your ad spend as a percentage of your total sales, paid and organic. ACoS only measures ad-attributed sales. TACoS is the more important account-level metric because falling TACoS at flat or rising total sales means your paid spend is driving organic lift. Most Amazon experts watch TACoS as the primary North Star and ACoS as the daily operational metric.
What is break-even ACoS?
Break-even ACoS is the point where ad spend exactly cancels out product margin: no profit, no loss. Formula: gross margin % = break-even ACoS %. If your gross margin is 35%, your break-even ACoS is 35%. Anything below that is profitable. Enter your gross margin percentage. That number is your break-even ACoS.
Can I use this calculator for multiple Amazon marketplaces?
Yes. The Sequence Commerce ACoS calculator supports 18 Amazon marketplaces: United States, United Kingdom, Germany, France, Italy, Spain, Netherlands, Sweden, Poland, Canada, Mexico, Brazil, India, Japan, Australia, Singapore, UAE, and Saudi Arabia. The calculator adjusts currency formatting automatically.
Is this ACoS calculator really free?
Yes, completely free. No signup, no email gate, no credit card, no rate limit, no upsells. Sequence Commerce built this calculator for the Amazon seller community. We use it ourselves internally and figured we'd publish it. The only ask: if you ever need an agency to actually run your PPC, take a look at our PPC services.
How accurate is this ACoS calculator?
The formula is exact: ad spend divided by ad-attributed sales, times 100. Accuracy depends on your inputs. Pull ad spend and ad-attributed sales from the same Amazon Ads report, same date range, same currency. The calculator does the rest.
What's a realistic ACoS for a brand new Amazon launch?
For new ASIN launches, expect ACoS in the 22% to 60% range in the first 30 to 60 days. This is intentional. You are paying for visibility while Amazon gathers conversion data on the listing. Sequence's launch playbook compresses this back to category-healthy ACoS by day 90 to 120.
Need pros to actually run your Amazon PPC?
Sequence Commerce manages Amazon PPC for 100+ brands, including Heinz, Nestlé, Catelli, Joe Boxer, and VASANTI. Get a free audit, and we will tell you where your ACoS is leaking budget.