ROAS calculator

ROAS = attributed revenue ÷ advertising spend.

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Attributed revenue

Ad spend

Answer

…

ROAS = attributed revenue ÷ advertising spend.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

A result of 5 means five units of revenue per unit of spend. Attribution windows must match; ROAS does not subtract product costs.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using ROAS calculator

ROAS = attributed revenue ÷ advertising spend.

A result of 5 means five units of revenue per unit of spend. Attribution windows must match; ROAS does not subtract product costs.

Next: Commission calculator

A worked example

With attributed revenue = 5000, ad spend = 1000, the return on ad spend is 5.

Next: Calculate CAC LTV

Before you use the result

A result of 5 means five units of revenue per unit of spend. Attribution windows must match; ROAS does not subtract product costs.

Example results for attributed revenue

These examples use Ad spend: 1000. They are reference calculations, not recommended settings.

Attributed revenue	Return on ad spend
2500	2.5
5000	5
10000	10

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ToolOctopus. “ROAS calculator.” Updated 2026-09-26. https://tooloctopus.com/roas-calculator.

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