Free tool

ROAS Calculator (Return on Ad Spend)

Evaluate the return on your ad spend and see how effectively your campaigns generate revenue.

Free · No signup · Runs in your browser, nothing is saved or sent

Your numbers

Currency

Ad spend

for the period

Revenue from those ads

for the same period

Gross margin

% of revenue after product cost

Your results

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These tools give estimates for planning, based on the numbers you enter. Fees, taxes and results vary by store, plan and country. This is not financial or tax advice.

In short

What does the ROAS Calculator do?

ROAS (return on ad spend) is the revenue your ads generate divided by what you spent on them. This calculator takes your ad spend and ad revenue and returns your ROAS and ACOS, then uses your gross margin to show your break-even ROAS and the profit left after ad spend.

By Chyshabo, a Shopify-only agency · Updated September 2026

1. How to use this roas calculator?

1Enter the amount you spent on ads and the revenue those ads generated in the same period.
2Add your gross margin so the calculator can find your break-even ROAS.
3Compare your ROAS with your break-even ROAS to see whether the ads make money.

What each input means

Ad spend: for the period
Revenue from those ads: for the same period
Gross margin: % of revenue after product cost

2. How is the roas calculator calculated?

ROAS = ad revenue ÷ ad spend
ACOS = ad spend ÷ ad revenue
Break-even ROAS = 1 ÷ gross margin
Profit after ads = ad revenue × gross margin − ad spend
Profit ROAS = (ad revenue × gross margin) ÷ ad spend

Example

Spending $5,000 on ads that generate $20,000 in revenue gives a ROAS of 4.00 and an ACOS of 25%. With a 45% gross margin the break-even ROAS is 2.22, gross profit is $9,000, and profit after ad spend is $4,000.

3. Who should use this tool?

Advertisers who want to measure a campaign against their margin.
Owners comparing Meta, TikTok and Google results.
Anyone told to “aim for a 4x ROAS” who wants to know if that is right for them.

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FAQ

ROAS Calculator: frequently asked questions

What is a good ROAS?

There is no universal answer. A good ROAS is one above your own break-even ROAS, which depends on your margins. A store with a 45% margin breaks even at about 2.2x.

What is the difference between ROAS and ACOS?

They are the same information from two angles. ROAS is revenue divided by spend, while ACOS is spend divided by revenue, shown as a percentage.

Why is my ROAS good but my profit low?

ROAS ignores costs other than ads. Shipping, fees, refunds and overheads also reduce profit, so check your net profit too.

Which revenue should I use?

Use the revenue attributed to the ads, but remember that platforms often over-count. Comparing with your total store revenue over the same period helps.

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