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How to Calculate ROAS

Calculate return on ad spend and understand what the ratio does and does not tell you.

Published 9/3/2026 · Updated 9/14/2026

How to calculate ROAS

ROAS is attributed advertising revenue divided by advertising spend. Revenue of 5,000 from spend of 1,000 produces 5x ROAS.

ROAS is a revenue-to-spend ratio, not a profit guarantee. Product cost, fees, returns, fulfillment and overhead may change the outcome. Use the ROAS calculator with a clearly defined attribution window.

For broader return analysis, see How to Calculate ROI. For impression-cost analysis, see How to Calculate CPM.

Use the related calculator
ROAS Calculator →