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Ad ROAS Calculator

Calculate ROAS and compare it with a gross-margin based break-even ROAS.

ROAS vs profit

ROAS is revenue divided by ad spend. It does not include gross margin, fulfilment, refunds or operating costs. This calculator adds gross margin and other variable costs to show whether the ad result may contribute profit after ad spend.

Example

If ads produce $10,000 in attributed revenue from $2,500 in spend, ROAS is 4.0x. At 60% gross margin, gross profit before ads is $6,000, leaving $3,500 before other variable costs.

Break-even ROAS

Approximate break-even ROAS is 1 divided by gross margin. At 60% gross margin, break-even ROAS is about 1.67x before any other costs.

Common mistakes

Do not treat ROAS as profit. Attribution windows, returns, shipping, discounts and repeat purchases can make channel economics very different from the headline ROAS.

Last reviewed: 2026-05-17

Before relying on this result

Use this calculator together with the formula, assumptions, limitations and examples on the page. If the topic involves health, tax, lending, investment, legal, safety or current-rate decisions, treat the number as an estimate and check the relevant primary source or professional guidance.

Calculator metadata last reviewed: 2026-05-14.