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ROAS Calculator

Calculate return on ad spend from attributed advertising revenue and ad spend. See revenue generated for every $1 spent on ads.

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ROAS Live result

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Calculation breakdown

How to read this result

Use the result to compare scenarios and verify the inputs, units and real-world conditions before making an important decision.

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How to use it

A clear result in a few inputs.

Enter the requested values.Use consistent units and the real values for your scenario.
Read the main result and breakdown.NumLuma recalculates immediately when an input changes.
Check the formula and assumptions.Use the supporting context before making a real-world decision.

What this calculator does

ROAS measures attributed revenue divided by advertising spend. It is deliberately narrower than profit or ROI: a campaign can have a strong ROAS while still being unprofitable after product cost, agency fees, fulfillment or other expenses.

What to know before you use the result

ROAS = attributed revenue ÷ ad spend.
A 5× ROAS means $5 of attributed revenue for each $1 of ad spend.
ROAS is not a profit margin and does not automatically include non-advertising costs.

Common mistakes to avoid

Using total company revenue instead of revenue attributed to the ads being measured.
Calling ROAS profit without accounting for product and operating costs.
Comparing campaigns that use different attribution windows or models.

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Decision depth

Change one lever. See what moves.

These are reusable starting points, not recommendations. Open a scenario, then change the inputs to match your own case.

01 / SCENARIO

3× campaign

$3,000 attributed revenue from $1,000 of ad spend.

Open scenario ↗02 / SCENARIO

4× campaign

$4,000 attributed revenue from $1,000 of ad spend.

Open scenario ↗03 / SCENARIO

5× campaign

$5,000 attributed revenue from $1,000 of ad spend.

Open scenario ↗

Formula reference

ROAS Formula

ROAS = revenue attributed to ads ÷ ad spend

Learn the return on ad spend formula and how attributed revenue relates to advertising spend.

Understand the formula →

Assumptions & scope

Know what the number includes.

Commercial business intent. Define the metric precisely and distinguish it from neighboring metrics to avoid thin or interchangeable pages.

How NumLuma checks calculators →

Part of a curated toolkit

Business Profit & Pricing Calculators

Best for pricing decisions, campaign analysis and operating-metric checks.

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Decision answers

Questions connected to this calculator.

Use a worked question when you want context before changing the inputs yourself.

Is a 4x ROAS good?↗How much revenue do I need for 4x ROAS?↗

Learn the concept

CPC, CPM, CTR and CPA: How Ad Metrics Work Together

Understand CPC, CPM, CTR and CPA, what each metric measures, and why no single advertising metric tells the whole story.

Read guide →

Quick answers

About the roas calculation.

What does 4× ROAS mean?

It means the attributed revenue is four times the advertising spend.

Is a higher ROAS always better?

Not necessarily. Growth goals, gross margin, repeat purchases and attribution quality can change what a useful target looks like.

Is ROAS the same as ROI?

No. ROAS uses ad-attributed revenue divided by ad spend. ROI is generally based on net gain relative to investment.

Should agency fees be included?

The standard formula uses ad spend, but you can broaden the cost input if your internal definition of campaign spend includes other direct acquisition costs.