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ADVERTISING & ROAS

Advertising & ROAS Calculators

Use paid-media metrics without losing sight of the economics underneath them. Start with what an order contributes, then work toward the ROAS, CPA and traffic costs the business can support.

Reviewed September 23, 2026 · ROAS Lab Editorial Team

Before you open a calculator

ROAS is a useful advertising metric, but it is not a profit statement. A campaign can report 4.0x ROAS and still be unattractive if the product margin is thin, returns are high or fulfillment consumes most of the order value. The reverse can also happen: a lower ROAS can be workable on a high-margin offer.

For that reason, this category starts with contribution economics and then moves outward. Break-even ROAS tells you the revenue efficiency required to cover acquisition. Maximum CPA translates the same economics into a customer cost. Break-even CPC adds conversion rate to show what a paid click can be worth. MER and POAS provide different views once you move into reporting.

Keep platform-attributed revenue separate from net business revenue. Both are useful, but they are not the same source of truth.

Calculators in this category

Choose the tool that matches the question you are trying to answer, then verify the result against your own economics.

PROFITABILITYBreak-Even ROAS CalculatorCalculate the minimum ROAS supported by net order revenue and variable costs.Open calculator →ADVERTISINGROAS CalculatorCalculate attributed revenue generated per advertising dollar.Open calculator →ACQUISITIONMaximum CPA CalculatorFind the acquisition cost your order economics can support.Open calculator →TRAFFIC COSTBreak-Even CPC CalculatorTranslate allowable CPA and conversion rate into a click-cost ceiling.Open calculator →MEDIA BUYINGCPC CalculatorCalculate cost per click, clicks from budget or required spend.Open calculator →MEDIA BUYINGCPM CalculatorCalculate impression cost, impression volume or budget.Open calculator →BLENDEDMER CalculatorCompare total business revenue with total marketing spend.Open calculator →CONTRIBUTIONPOAS CalculatorMeasure contribution profit generated for every advertising dollar.Open calculator →PLANNINGROAS Scenario ComparisonCompare price, cost and profit assumptions before changing spend.Open calculator →PROFIT TARGETTarget ROAS CalculatorReserve a post-ad profit margin above break-even.Open calculator →ENGAGEMENTCTR CalculatorMeasure clicks relative to impression volume.Open calculator →UNIT ECONOMICSContribution Margin CalculatorCalculate the contribution that funds acquisition.Open calculator →FORECASTINGAd Budget CalculatorWork backward from conversion or revenue goals.Open calculator →
ILLUSTRATIVE EXAMPLE

A 3.0x ROAS can mean very different things for two products

Product A sells for $90 and leaves $45 of contribution before advertising. Its break-even ROAS is 2.0x. Product B also sells for $90 but leaves only $27 after product cost, shipping, payment fees and expected returns. Its break-even ROAS is 3.33x.

Product A contribution$45
A break-even ROAS2.00x
Product B contribution$27
B break-even ROAS3.33x

At a reported 3.0x ROAS, Product A is above its break-even floor while Product B is below it. The media metric is identical; the economics are not.

This example is for explanation only. It is not a benchmark, forecast or claim about typical performance.

DATA CHECKLIST

What to pull before calculating

Keep every input tied to a source and a date range. Most bad outputs come from mixed definitions rather than bad arithmetic.

InputWhere to get itCheck before using it
Attributed revenueAd platformRecord attribution window and whether the number includes modeled conversions.
Ad spendAd platform or financeUse the same campaign scope and date range as the attributed revenue.
Net order revenueStore or financeAccount for normal discounting and refunds when using it for economic thresholds.
Variable order costsCost recordsInclude product cost, fulfillment, payment fees and other costs that move with an order.
Conversion rateAnalytics or storeUse the same paid-click definition when converting CPA into a CPC ceiling.
QUALITY CHECK

Three mistakes that change the answer

Treating ROAS as profit

ROAS only compares revenue with ad spend. It does not subtract product cost, shipping, fees, returns or overhead.

Using one target for every product

Different margins and return rates can create very different break-even points even inside the same campaign.

Comparing attributed and blended revenue as if they match

Platform attribution is designed for campaign reporting. Store or finance revenue answers a different question.

WEEKLY REPORTING

Where this belongs in a real report

For a weekly paid-media review, show spend, attributed revenue, ROAS, CPA and conversion rate together. Then place the economic thresholds beside them: break-even ROAS and allowable CPA. That turns the report from a performance snapshot into a decision tool.

At a business level, add MER or another blended revenue-to-marketing measure. If contribution data is reliable, POAS can show whether revenue efficiency is translating into contribution after variable costs.

Related reading

Use the guides when you need the reasoning behind a number, not just the number itself.

FOUNDATIONWhat Is Break-Even ROAS?The core relationship between contribution margin and advertising efficiency.Read guide →GOOGLE ADSGoogle Ads ROAS GuideApply economic targets to Search, Shopping and Performance Max.Read guide →METAFacebook Ads ROAS GuideConnect paid-social reporting with contribution economics.Read guide →TARGET SETTINGTarget ROAS FormulaMove from break-even to an operating target with a profit buffer.Read guide →
FAQ

Questions that usually come up after the first calculation

What is the difference between break-even ROAS and target ROAS?

Break-even ROAS is the point where contribution before advertising is fully consumed by ad spend. A target ROAS can be set higher to leave room for profit and risk.

Can a campaign with lower ROAS be more profitable?

Yes. If it sells a higher-margin product or creates more contribution per order, a lower ROAS can still produce more profit than a high-ROAS low-margin campaign.

Should I use platform revenue or store revenue?

Use platform revenue for platform ROAS and optimization. Use store or finance revenue for business-level reconciliation. Label the source clearly.

How often should ROAS targets change?

Recalculate when product mix, price, fulfillment cost, refund behavior, discounting or desired profit changes materially.

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