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ROAS Calculator

Calculate Return on Ad Spend (ROAS).

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Inputs

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Results

ROAS Ratio

Revenue returned for each dollar spent.

ROAS %400.00%

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Assumptions

  • This calculator treats attributed revenue as directly tied to the entered ad spend.
  • ROAS is a revenue metric only and does not subtract product cost, overhead, or returns.
  • If ad spend is zero or negative, ROAS is undefined rather than free.

Sensitivity preview

Ad Spend -10%: ROAS Ratio 4.44x

Ad Spend Current: ROAS Ratio 4.00x

Ad Spend +10%: ROAS Ratio 3.64x

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About this ROAS Calculator

ROAS (Return On Ad Spend) is the #1 metric for e-commerce advertisers. It answers the question: 'If I put $1 into ads, how many dollars come back?' Unlike ROI, it focuses purely on revenue generated from ad spend.

Who this calculator is for

  • Paid-media teams evaluating whether ad spend is generating enough revenue.
  • Founders checking whether growth campaigns are scalable at current economics.
  • Operators comparing channels, audiences, or campaigns with a shared efficiency metric.

When to use it

  • Measure how much top-line revenue each ad dollar is producing.
  • Benchmark campaign efficiency against your break-even margin requirements.
  • Compare paid traffic performance before increasing budget.

How to use this calculator

  1. Enter Ad Spend (Total cost of ads).
  2. Enter Revenue generated from those ads.

Key assumptions

  • This calculator treats attributed revenue as directly tied to the entered ad spend.
  • ROAS is a revenue metric only and does not subtract product cost, overhead, or returns.
  • If ad spend is zero or negative, ROAS is undefined rather than free.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

ROAS = (Revenue / Ad Spend). A ROAS of 4.0 means you earned $4 for every $1 spent.

Inputs explained

Ad Spend

Total budget spent on the campaign.

Revenue

Total value of sales directly attributed to the ads.

Understanding your results

A ROAS > 4.0 is generally considered good. A ROAS < 1.0 means you are losing money on every ad dollar. Your Break-Even ROAS depends on your profit margins.

Example scenarios

Healthy Campaign

Spend $1,000. Revenue $5,000. ROAS 5.0 (500%).

Losing Campaign

Spend $1,000. Revenue $800. ROAS 0.8 (80%).

Key Features

  • Simple Ratio Calculation
  • Percentage Conversion
  • Ad Efficiency Check

Tips & Best Practices

  • Compare ROAS against your Break-Even ROAS (1 / Profit Margin). If margin is 50%, you need ROAS > 2.0 to be profitable.
  • High ROAS on low volume isn't always better than lower ROAS on high volume.

Glossary of Terms

Break-Even ROAS
The ROAS needed to cover product and ad costs.
Attribution
The method used to credit a sale to a specific ad click.

Frequently Asked Questions

What is a good ROAS?
Generally, a 4:1 ratio (400%) is considered good. This means $4 revenue for every $1 spent. However, if your margins are low, you might need a higher ROAS to be profitable.
What is the difference between ROAS and ROI?
ROAS looks at Revenue / Ad Cost. ROI looks at (Profit - Cost) / Cost. ROI accounts for margins and other expenses; ROAS focuses strictly on ad efficiency.
What is Break-Even ROAS?
Your Break-Even ROAS is 1 / Profit Margin %. If your margin is 50%, you need a 2.0 ROAS to break even.
Can ROAS be less than 1?
Yes, if ROAS is < 1 (e.g., 0.8), you are generating less revenue than you spent on ads. This is a direct loss.
Does ROAS account for product costs?
No. ROAS only looks at gross revenue. You must compare ROAS against your profit margins to ensure net profitability.