BY METRIC // ROAS CALCULATOR

ROAS calculator: calculate ROAS and break-even ROAS with the return on ad spend formula

A ROAS calculator answers one question: for every dollar you put into ads, how many dollars of revenue came back. The math is simple, revenue divided by spend, but the number only means something once you compare it to your break-even ROAS, the point where the margin on that revenue exactly covers the ad cost.

The calculator below gives you both in one place. Enter revenue, ad spend, and your profit margin, and it returns your ROAS, your break-even ROAS, and a plain verdict on whether the spend is making or losing money. When you are ready to stop calculating one campaign at a time, MixedMetrics blends ROAS across Google, Meta, TikTok, your store, and billing so you see the real, reconciled number rather than the inflated one each ad platform reports.

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The short answer

ROAS (return on ad spend) is revenue divided by ad spend, so $10,000 in revenue from $2,500 in spend is a 4x ROAS, or 400 percent. Break-even ROAS is 1 divided by your profit margin, so at a 40 percent margin you break even at 2.5x and anything above that is profit. Use the calculator above for a fast figure, then track blended ROAS across every channel in MixedMetrics so platform double-counting stops inflating the number.

Last updated July 2026

Calculator

ROAS calculator

Enter your revenue and ad spend to calculate ROAS, then add your profit margin to see the break-even ROAS you have to clear to make money.

Revenue from ads (USD)

Ad spend (USD)

Profit margin (%)

Your margin after cost of goods and variable fees, before ad spend. Used for break-even ROAS.

ROAS

ROAS as percent

400%

Break-even ROAS

2.5x

Profit on ad spend

$7,500

Verdict

Above break-even

ROAS = revenue / ad spend. Break-even ROAS = 1 / profit margin. Numbers stay in your browser.

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Why it works

What you get with roas calculator

ROAS and break-even in one

Get your return on ad spend and the break-even ROAS you must clear, side by side, from three inputs.

A verdict, not just a number

The calculator says whether the spend is above or below break-even, so you know if it is profitable at a glance.

Then blend it for real

Platform ROAS double-counts. MixedMetrics computes blended ROAS that reconciles to the revenue in your bank.

What it covers

Connect, blend, and see what is driving revenue

MixedMetrics turns scattered platform numbers into one blended read-out of ROAS, CAC, MER, and revenue, with AI that flags where spend is leaking.

Calculate ROAS as both a ratio and a percentage
See your break-even ROAS from your profit margin
Know instantly whether a campaign clears break-even
Move from one-off math to blended ROAS across every channel
Catch the channel whose real ROAS is lower than the platform claims

MASTER READ-OUT Live

Blended ROAS

3.8x

MER

4.2x

Blended CAC

$29

Revenue

$214k

AI insight

What changed

TikTok is carrying ROAS at 4.8x while Meta CAC crept to $41. Shift budget to recover efficient revenue.

Why MixedMetrics

Blended truth, AI insights, no BI tool required

Not eight conflicting platform dashboards, not a data engineer, not a spreadsheet that rots by Friday. One blended view you can act on.

One blended read-out

Blended ROAS, CAC, MER, LTV, and revenue by channel in a single live view, instead of eight platforms claiming the same conversion.

AI that finds the leak

The insight layer reads the blended data and tells you what changed and where spend is leaking, before the month closes.

Connect, do not migrate

Read-only connectors to the tools you already run. No re-platforming, no pixel surgery, first dashboard the same day.

Compare

Break-even ROAS by profit margin

Profit margin	Break-even ROAS	What it means
20%	5.0x	You need $5 back for every $1 spent just to cover the ad cost.
30%	3.33x	Common for lean ecommerce; anything under 3.33x loses money.
40%	2.5x	A typical retail margin; 2.5x is the floor, aim above it.
50%	2.0x	Every $1 of spend must return at least $2 in revenue.
60%	1.67x	Healthier margins let profitable ROAS run lower.
70%	1.43x	Software-style margins can stay profitable near 1.5x.

In depth

How to calculate and read ROAS

How do you calculate ROAS?

You calculate ROAS by dividing the revenue an ad or channel produced by the amount you spent on it. If a campaign brought in $10,000 in revenue on $2,500 in ad spend, ROAS is $10,000 / $2,500 = 4, usually written as 4x. As a percentage that is 400 percent, meaning every dollar of spend returned four dollars.

The one rule that keeps the number honest is to compare like with like. Use the revenue attributed to the same ads over the same window as the spend, and decide up front whether you count revenue or gross profit. Most teams calculate ROAS on revenue and then check it against break-even ROAS to see whether that revenue is actually profitable.

What is the ROAS formula?

The ROAS formula is revenue from ads divided by cost of ads. Written out: ROAS = revenue attributable to ads / ad spend. Multiply by 100 if you want it as a percentage. There is nothing more to it, which is why ROAS is the fastest health check on paid media.

The related formula that matters just as much is break-even ROAS, which is 1 divided by your profit margin. At a 40 percent margin, break-even ROAS is 1 / 0.40 = 2.5x. Below 2.5x that campaign loses money before you have paid for anything else; above it, the extra revenue is contribution.

What is a good ROAS?

A good ROAS is any figure comfortably above your break-even ROAS, and that threshold depends entirely on your margin. A brand at a 30 percent margin needs 3.33x just to break even, so a 4x ROAS is thin. A software company at a 75 percent margin breaks even near 1.33x, so the same 4x is excellent. There is no universal good number.

As a loose benchmark, many ecommerce advertisers treat 4x as a healthy target and 2x to 3x as the danger zone, but that only holds at typical retail margins. Always set your target ROAS above your break-even ROAS with enough headroom to cover shipping, returns, overhead, and the profit you actually want to keep.

What is break-even ROAS?

Break-even ROAS is the return on ad spend at which the profit on the revenue exactly equals the ad cost, so you make nothing and lose nothing. The formula is 1 divided by your profit margin. It is the single most useful number for setting ad targets because it converts your cost structure into the minimum ROAS a campaign has to beat.

Recalculate it whenever a cost changes. A price cut, a rise in cost of goods, higher shipping, or a payment-processing fee all move your margin and therefore your break-even ROAS. Advertisers who set a target once and never revisit it often keep scaling a campaign that quietly slipped below break-even.

What is the difference between ROAS and ROI?

ROAS measures revenue against ad spend only. ROI (return on investment) measures profit against total cost, including cost of goods, overhead, and everything else it took to make the sale. ROAS tells you if the ads are working; ROI tells you if the business is making money. A campaign can post a strong ROAS and still be ROI-negative once the full cost stack is counted.

That gap is exactly why break-even ROAS exists: it folds your margin into the ROAS number so a single, fast metric already accounts for whether the revenue is profitable. For a deeper walk through the profit side, see the guide on how to track marketing ROI.

Why is blended ROAS more reliable than platform ROAS?

Because each ad platform claims credit for conversions it merely touched, the ROAS reported inside Google Ads and Meta Ads is almost always inflated, and summing them can exceed the revenue your bank actually received. A calculator fixes one campaign at a time; it cannot fix the double-counting across platforms.

Blended ROAS solves that by dividing total revenue by total ad spend across every channel at once. It cannot be inflated by overlapping attribution because it reconciles to real money. MixedMetrics computes blended ROAS, blended CAC, and MER for you from read-only connectors, so the number you plan against is the honest one.

Good questions

Questions about roas calculator

Divide the revenue an ad produced by what you spent on it. $10,000 in revenue on $2,500 in spend is a 4x ROAS, or 400 percent. Compare it to your break-even ROAS, which is 1 divided by your profit margin, to see if that revenue is actually profitable.

Break-even ROAS = 1 / profit margin. At a 40 percent margin, break-even is 1 / 0.40 = 2.5x, so you need $2.50 of revenue for every $1 of spend just to cover the ads. Recalculate it any time a cost or price changes.

Not necessarily. A very high ROAS often means you are underspending and leaving profitable growth on the table. The goal is to scale spend while staying comfortably above break-even ROAS, not to maximize the ratio on a tiny budget.

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