ROAS Calculator
MarketingCalculate your Return on Ad Spend instantly. Enter revenue and ad spend to find ROAS, breakeven ROAS from your margin, and whether your campaign is profitable.
Reviewed by the thecalcu.com team · Last updated July 9, 2026
(Revenue − Cost of Goods) ÷ Revenue
Return on Ad Spend
Minimum to cover ad spend
After ad spend + COGS
What is a ROAS?
A ROAS Calculator computes your Return on Ad Spend, the revenue generated for every dollar invested in advertising. ROAS is the primary efficiency benchmark for revenue-generating campaigns, and it is the number that answers the most fundamental question in paid media: is this campaign making money?
The core formula is simple: divide campaign revenue by ad spend. A campaign that generated $8,000 from $2,000 in spend has a ROAS of 4, written as 4× or 400%. But a ROAS number alone is not enough. A 4× ROAS on a product with 50% gross margin is highly profitable, but the same 4× ROAS on a product with 20% gross margin means you are losing money on every campaign sale.
This calculator solves that problem by adding two critical outputs alongside raw ROAS: your Breakeven ROAS (calculated from your gross margin) and your Net Profit from the campaign. Together, these three numbers tell you not just whether revenue is flowing, but whether the campaign is actually contributing to profit, which is the only ROAS question that matters.
ROAS sits at the top of the performance marketing hierarchy. It is built from the chain below it: CPM determines the cost of impressions, CPC the cost of traffic, CPA the cost of conversions, and ROAS the revenue those conversions generate relative to spend. When ROAS drops, the diagnostic question is always: which link in the chain broke?
Why Use a ROAS Calculator?
Revenue figures and ad spend figures live in different systems, your ad platform shows spend, your payment processor or analytics platform shows revenue, and the two are rarely in the same view. Pulling them together into a ROAS calculation takes manual steps that introduce delay and error. This calculator eliminates that by combining all three inputs, revenue, spend, and margin, into a single profitability verdict.
The Breakeven ROAS output is where this tool earns its keep. Most marketers know their ROAS target; fewer have immediately available access to their breakeven ROAS at any given margin. The Gross Margin slider lets you adjust on the fly, if your product mix changes, or if a supplier price increase compresses margin, you can instantly see the new breakeven ROAS you need to maintain profitability without rebuilding a spreadsheet.
The Net Profit output converts the abstract ROAS ratio into a dollar figure that non-marketing stakeholders understand immediately. A ROAS of 3.8× does not land with a CFO; "this campaign generated $6,400 net profit after ad spend" does.
Who Should Use This Calculator?
E-commerce marketers running Google Shopping, Meta Dynamic Product Ads, and retargeting campaigns live by ROAS. It is the primary KPI reported to owners and investors, and the threshold below which campaigns get paused or scaled back.
Direct-to-consumer (DTC) brand founders evaluating paid acquisition channels need to know not just whether ROAS is positive, but whether it clears the breakeven threshold given their margin structure, especially important for brands with low margins where a seemingly strong ROAS of 3× may still be unprofitable.
Agency performance teams managing client accounts need to report ROAS clearly and contextualise it against the client's margin. A client with 25% gross margin who sees a 2.8× ROAS needs to hear that they are below breakeven, not that the ROAS is improving. This calculator makes that conversation instant.
Media buyers scaling campaigns use ROAS to decide which campaigns to increase budget on. The standard rule: if ROAS is above breakeven and the campaign can absorb more spend without ROAS collapsing, scale it. If ROAS is below breakeven, pause or restructure before increasing budget.
Growth analysts and students learning performance marketing fundamentals will find the breakeven ROAS formula, and its dependence on gross margin, one of the most important concepts in paid media, directly connecting marketing performance to business economics.
What Insights Does the ROAS Calculator Give You?
ROAS (Return on Ad Spend) is your headline revenue efficiency metric. Read it first against your ROAS target, then immediately against your Breakeven ROAS. A ROAS above breakeven is profitable at the campaign level; below breakeven, every sale loses money on advertising cost alone before any other overhead is considered.
Breakeven ROAS is the threshold that makes ROAS meaningful. Without it, a ROAS of 4× tells you nothing about profitability, it could be excellent (at 40% margin, breakeven is 2.5×, leaving 1.5× of headroom) or disastrous (at 20% margin, breakeven is 5×, meaning you are 1× below the profitable threshold). Adjust the Gross Margin input to model how a price increase, a supplier change, or a product mix shift affects your breakeven ROAS.
Net Profit from Campaign converts the efficiency ratio into a dollar P&L figure: (Revenue × Gross Margin) − Ad Spend. This is the actual cash contribution the campaign made to your business after covering both product cost and ad spend. It is the number to report to owners and finance teams, and the figure that determines whether scaling the campaign will actually grow the business.
How to use this ROAS calculator
Enter Revenue from Campaign, use the revenue attributed to this campaign from your analytics or ad platform. For Google Ads, this is Conversion Value. For Meta, it is Purchase Conversion Value. For blended analysis, use actual revenue from your payment processor for the same period.
Enter Total Ad Spend, the gross billed amount for the campaign or date range, matching the same period as your revenue figure. Mismatched time windows are the most common source of ROAS calculation errors.
Set your Gross Margin, use the slider to enter your product gross margin (Revenue − Cost of Goods Sold, as a percentage of Revenue). If you sell multiple products, use a weighted average margin across the revenue this campaign generated.
Read your ROAS, compare immediately to your Breakeven ROAS in the output below. If ROAS > Breakeven ROAS, the campaign is profitable at the campaign level. If not, every sale is losing money on ad spend alone.
Check Net Profit, this is the actual P&L contribution. If it is positive, the campaign is covering both product cost and ad spend. If negative, the campaign is loss-making even before overhead.
Scenario-plan with the margin slider, move the Gross Margin slider to test how margin changes affect breakeven ROAS. This is particularly useful when evaluating promotional campaigns where discounts compress margin temporarily.
Formula & Methodology
ROAS formula: ROAS = Revenue from Campaign ÷ Total Ad Spend Breakeven ROAS formula: Breakeven ROAS = 1 ÷ Gross Margin (as a decimal) Net Profit formula: Net Profit = (Revenue × Gross Margin) − Ad Spend Variables: - Revenue, total revenue attributed to the campaign (before cost of goods) - Ad Spend, gross advertising cost for the same period - Gross Margin, (Revenue − Cost of Goods) ÷ Revenue, expressed as a percentage Worked example: An online supplement brand runs a Google Shopping campaign for one month: - Revenue attributed: $12,000 - Ad spend: $3,000 - Gross margin: 45% ROAS = $12,000 ÷ $3,000 = 4× Breakeven ROAS = 1 ÷ 0.45 = 2.22× Net Profit = ($12,000 × 45%) − $3,000 = $5,400 − $3,000 = $2,400 The campaign ROAS of 4× comfortably exceeds the breakeven ROAS of 2.22×, leaving $2,400 in gross profit after covering both product cost and ad spend. The campaign has 1.78× of headroom above breakeven, meaning ROAS could fall by 45% before it becomes loss-making. The brand's target next month is $20,000 in campaign revenue at the same ROAS. Required ad spend = $20,000 ÷ 4 = $5,000. Relationship to other metrics: ROAS = (Conversions × Average Order Value) ÷ Ad Spend = (Ad Spend ÷ CPA × AOV) ÷ Ad Spend = AOV ÷ CPA This shows that ROAS improves when you increase average order value (upsells, bundles) or reduce CPA (better targeting, higher conversion rate), two levers that operate independently of the ROAS formula itself. Use our CPA Calculator to analyse conversion cost alongside your ROAS. Assumptions: - Revenue is attributed using the platform's default attribution model. Platform-reported revenue typically overstates true incremental revenue due to cross-channel attribution overlap. Blended ROAS (total revenue ÷ total ad spend using financial data) is a more conservative and reliable measure. - Gross margin is assumed constant across all products in the campaign. For multi-product campaigns with varying margins, use a revenue-weighted average margin.
Frequently Asked Questions