Your ROAS, solved from any two numbers.

To calculate ROAS, divide the revenue attributed to your ads by the amount you spent on those ads. The formula is ROAS = ad revenue ÷ ad spend. If $4,800 in ad revenue came from $1,500 in spend, the ROAS is 3.2x.

ROAS is return on ad spend, your ad revenue divided by your ad spend. A 3.2x ROAS means every dollar you gave the platform came back as $3.20 in tracked revenue. Because the formula has only three parts, any two of them pin down the third: spend and revenue give you your ROAS, spend and a target ROAS give you the revenue that budget must produce, and revenue plus a target ROAS caps what you can afford to spend.

Two caveats keep the number honest. First, platform ROAS is an attribution claim, not a bank statement. Each channel credits itself generously, so also track your MER, total revenue divided by total marketing spend, which cannot lie. Second, ROAS says nothing about profit. It compares spend to revenue, not to margin, so a 3x ROAS on a thin-margin product can still lose money on every single order.

That is why this page is the quick utility, not the verdict. Once you know your ROAS, take your price, COGS, and fees to the break-even ROAS calculator to learn the threshold your number has to clear before a campaign actually makes money. Comparing the two turns a raw multiple into a profit or loss signal.

And when the ROAS is not where it needs to be, the fix is rarely the bid settings. It is the creative angle, and the sharpest angles come from scraping what your customers actually say.