What is the difference between ROAS and ad ROI?

ROAS is revenue per dollar of ad spend (revenue ÷ ad spend). ROI is profit per dollar of ad spend, expressed as a percentage: ROI = net profit ÷ ad spend × 100, where net profit subtracts your cost of goods (via your gross margin) and the ad spend itself from revenue — not just the ad spend. A campaign can show a healthy 4.0 ROAS and still be a poor ROI once product costs are subtracted, which is exactly why finance asks for ROI, not ROAS.

How do I calculate the ROI of my ad spend?

Enter your gross profit margin alongside spend, conversion rate, and order value. The calculator derives revenue and ROAS, multiplies revenue by your margin to get gross profit, subtracts the ad spend to get net profit, and divides that by ad spend for your Marketing ROI %. So you get the COGS-aware, CFO-ready percentage directly — the displayed Net Profit accounts for cost of goods, not just the ad spend.

Why report ad ROI instead of just ROAS?

ROAS is the right operational metric for media buyers optimizing day to day, but it is blind to margin: it treats $4 of low-margin revenue the same as $4 of high-margin revenue. ROI converts performance into the language of profit and the P&L, which is what budget owners and finance use to approve spend. Reporting both keeps tactical optimization and business justification aligned.

Ad Spend ROI Calculator

Turn ad spend and revenue into ROAS and true marketing ROI

Business Type

Monthly Ad Spend ($)

Average Cost per Click ($)

Conversion Rate (%)

Percentage of visitors who make a purchase

Average Order Value ($)

Gross Profit Margin (%)

Share of revenue left after cost of goods — used for true profit, ROI, and break-even ROAS

ROAS sits inside a larger paid-media efficiency framework. Use these definitions and adjacent calculators to interpret your result in context — channel benchmarks, attribution caveats, LTV-adjustment, and the testing cadence that actually moves ROAS over time.

Glossary terms

ROAS — Canonical definition + benchmarks by channel.
MER — Account-level efficiency when iOS 14.5+ attribution breaks per-channel ROAS.
Customer LTV — LTV-adjusted ROAS for subscription / repeat-purchase businesses.
ROI — How ROAS differs from full-cost return.
CAC — Acquisition cost paired with ROAS to grade unit economics.
CPM — Upstream cost driver that pushes ROAS down independent of creative quality.

Other calculators

MER Calculator — When channel ROAS misleads, switch to account-level MER.
LTV Calculator — Compute customer lifetime value to LTV-adjust ROAS.
Creative Testing Calculator — Sample sizes for the A/B tests that drive ROAS lift.
Incrementality Calculator — Strip the "what would have happened anyway" from observed ROAS.

Frequently Asked Questions

Ad Spend ROI Calculator

Free ad spend ROI calculator: turn advertising spend, the revenue it drives, and your gross margin into both ROAS and true marketing ROI. See return on ad spend and the COGS-aware, profit-based ROI behind it so you can defend ad budgets with the number finance actually asks for.

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Related Calculators

ROAS Calculator

Calculate and analyze your return on ad spend (ROAS) to optimize campaign performance. Get data-driven insights on advertising efficiency, revenue attribution, and budget allocation to maximize marketing ROI.

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Measure the true impact of your marketing campaigns by calculating incrementality. Understand which portion of your conversions would have happened organically versus those directly caused by your marketing efforts.

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CPM Calculator

Calculate Cost Per Mille (CPM) and analyze advertising campaign performance with precision. Get comprehensive insights on media buying efficiency, budget optimization, and campaign ROI analysis.

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Related Terms

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Return on Investment

Return on Investment measures the profitability of an investment by comparing the net profit (revenue minus all costs) to the total investment cost. In marketing, it considers all costs including media spend, creative production, technology, overhead, and operational expenses, making it a more comprehensive metric than ROAS which focuses specifically on ad spend.

glossary-term

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Return on Ad Spend

Return on Ad Spend (ROAS) is a marketing performance metric that measures the revenue generated per dollar of advertising spend. Unlike ROI which considers all business costs, ROAS specifically evaluates advertising efficiency by comparing directly attributable revenue to ad spend. This metric is crucial for optimizing campaign performance, budget allocation, and overall marketing strategy.

glossary-term

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Paid Media

Paid media encompasses all forms of advertising and promotional content where brands pay for placement, visibility, or engagement. This includes traditional advertising channels as well as digital platforms where payment is exchanged for audience reach, impressions, clicks, or other marketing objectives.

glossary-term

Ad Spend ROI Calculator