YEB · Advertising economics

Return on Ad Spend (ROAS) Calculator

See how much attributed ad revenue you generate for every unit of ad spend. Then add margin, new customers and LTV to understand what ROAS does — and does not — tell you.

QUICK ROAS

Two numbers first

LIVE
$for this period
$10050k+

The advertising cost used in the ROAS denominator.

$for this period
$0200k+

Do not mix total business revenue with ad spend unless that is intentionally your measurement scope.

AD SPEND—
→
ATTRIBUTED REVENUE—
Build attributed revenue from orders × AOVOptional — useful when you know orders and average order value
+
This builder does not change the ROAS formula. It only helps you construct the revenue numerator consistently.
ATTRIBUTED REVENUE: —
Add business contextOptional — understand profit, CAC and lifetime economics
+
%
Calculate CAC ↗ Calculate LTV ↗
Attributed ad revenue ÷ ad spend. This is revenue efficiency — not profit.

YOUR ROAS

ROAS

LIVE
—

Attributed ad revenue ÷ ad spend. This is revenue efficiency — not profit.

—
ROAS as %
—ROAS × 100
Revenue per ad-spend unit
——

WHAT THE NUMBER MEANS

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WHAT THE NUMBER MEANS

Understand what each name is actually measuring

These metrics answer different questions. Use the live values below to see the formulas with your own inputs.

ROASAttributed revenue ÷ ad spend = ROAS
——
ROAS as %ROAS × 100 = ROAS %
——
Attributed gross profitAttributed revenue × gross margin

Not company profit. Overhead, payroll, taxes, fees, returns and other costs can still matter.

—Add gross margin to calculate this.
Gross contribution after ad spendAttributed gross profit − ad spend

Not company profit. Overhead, payroll, taxes, fees, returns and other costs can still matter.

—Add gross margin to calculate this.
Simplified break-even ROAS1 ÷ gross margin rate = simplified break-even ROAS

Simplified gross-margin break-even only. It assumes gross margin captures direct costs and ignores other operating costs.

—Add gross margin to calculate this.
Media CACAd spend ÷ new customers = Media CAC
—Add new customers to calculate Media CAC.
Calculate CAC ↗
LTV:CACLTV ÷ CAC = LTV:CAC
—Add LTV and new customers to calculate LTV:CAC.
Calculate LTV ↗

DECISION MODE

What if ad efficiency improves?

Change attributed revenue, ad spend or AOV and watch ROAS move instantly. Combined changes compound.

Scenario ROAS—
Change vs base—
Scenario attributed revenue—
Scenario ad spend—
Try:

ROAS IS ONLY ONE LAYER

Connect ad efficiency to customer economics

ROAS tells you how much attributed revenue ads produce. CAC tells you what a new customer costs. LTV tells you what that customer may be worth over time. Read them together.

ACQUISITION COSTHow much does one new customer cost?

Use CAC when customer count matters more than revenue attribution.

Calculate CAC ↗
CUSTOMER VALUEWhat is the customer worth over time?

Use LTV to understand whether acquired customers create enough lifetime value.

Calculate LTV ↗

YOUR ROAS

Attributed ad revenue ÷ ad spend. This is revenue efficiency — not profit.

FROM METRIC TO DECISION

ROAS can look good while economics are still weak.

If you need help connecting ad efficiency to margin, CAC, customer quality and LTV, diagnose the economics rather than optimizing one metric in isolation.

Get a detailed acquisition economics plan

Bring your spend, attributed revenue, margin, CAC and LTV. Turn the numbers into priorities.

Get the detailed plan ↗↗

Understand the system behind the numbers

Customer fit, offer, message, creative and experience can all affect acquisition efficiency and lifetime economics.

Diagnose the broader system ↗↗