What is ROAS (return on ad spend)?

How much revenue each unit of ad spend brings back.

ROAS is ad revenue divided by ad spend. A ROAS of 4 means each 1 spent brought back 4 in revenue.

ROAS looks at revenue, not profit; with high costs, even a good-looking ROAS can lose money.

Updated: October 12, 2026 · All terms

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