How ROAS is calculated
ROAS (Return on Ad Spend) = revenue from ads ÷ ad spend. It's expressed as a multiple — a 4× ROAS means every $1 spent returned $4 in revenue. It's the fastest gauge of whether a campaign is pulling its weight, which is why media buyers check it daily.
ROAS vs. break-even ROAS
A raw ROAS number means nothing without your margins. Your break-even ROAS is 1 ÷ your profit margin: at a 25% margin you need a 4× ROAS just to break even. Always compare your campaign ROAS against that line — use the profit margin calculator to find yours.
How to improve ROAS
- Lead with proven creative angles and hooks instead of guessing.
- Cut ads below break-even fast; scale the winners.
- Improve landing-page conversion so the same spend earns more.
- Study competitors' long-running ads — an ad that's been live for months is almost always profitable. See how to spy on competitors' Facebook ads.
Frequently asked questions
What is a good ROAS?
It depends on your margins. A common rule of thumb is a 3-4× ROAS for ecommerce, but the real target is your break-even ROAS — 1 divided by your profit margin. If you keep 30% margin, you break even around 3.3×, so anything above that is profit. High-margin or subscription products can be profitable at a much lower ROAS.
How do you calculate ROAS?
ROAS = revenue generated from ads ÷ amount spent on those ads. If you spend $1,000 and make $3,500, your ROAS is 3.5×. It tells you how many dollars of revenue each dollar of ad spend produced, before accounting for product and operating costs.
What's the difference between ROAS and ACOS?
They're inverses of the same thing. ROAS = revenue ÷ spend (expressed as a multiple), while ACOS (Advertising Cost of Sale) = spend ÷ revenue (expressed as a percent). A 4× ROAS equals a 25% ACOS. Amazon advertisers tend to use ACOS; Meta and TikTok buyers usually use ROAS.
Does ROAS account for profit?
No — ROAS is a revenue metric, not a profit metric. Two campaigns with the same ROAS can have very different profitability depending on margins. Use this tool alongside our profit margin calculator to find your break-even ROAS and know whether a campaign is actually making money.