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Free ROAS Calculator
Do Your Ads Pay?

Return On Ad Spend, Break-Even ROAS And Ad Budget, Worked Out As You Type.

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How To Use The Calculator

  1. See What Your Ads Returned

    Enter what you spent on ads and the revenue they produced. The calculator gives your ROAS as a multiple and a percentage.

  2. Find The ROAS You Need

    Enter your profit margin. The calculator shows the return at which ads stop losing money, and the most you can pay to win one sale.

  3. Plan The Budget

    Enter a revenue goal, your click price and your conversion rate. You get the clicks and the budget it takes, and whether that plan clears break-even.

The Formulas Behind It

What you wantFormulaExample
ROASRevenue from ads ÷ ad spend$4,000 ÷ $1,000 = 4.00x, or 400%
Break-even ROAS1 ÷ profit margin1 ÷ 0.40 = 2.50x
Most you can pay for a saleAverage order value × profit margin$150 × 0.40 = $60
Sales neededRevenue goal ÷ average order value$30,000 ÷ $150 = 200
Clicks neededSales needed ÷ conversion rate200 ÷ 0.03 = 6,667
Ad budgetClicks needed × cost per click6,667 × $1.50 = $10,000

Break-Even ROAS By Profit Margin

The thinner your margin, the more revenue every dollar of ads has to bring back before you make anything.

Profit marginBreak-even ROASAs a percentage
10%10.00x1,000%
15%6.67x666.7%
20%5.00x500%
25%4.00x400%
30%3.33x333.3%
40%2.50x250%
50%2.00x200%
60%1.67x166.7%
75%1.33x133.3%

What ROAS Does Not Tell You

  • ROAS counts revenue, not profit. A 4x return makes money at a 40% margin and loses it at 20%, which is why break-even ROAS matters more than any single target.
  • It only counts the sales the ad platform can see. Phone orders, in-store sales and purchases on another device are often missing, so real returns can be higher than reported.
  • It looks at the first sale. A customer who buys again is worth more than the ROAS on their first order shows.
  • It leaves out what the ads cost beyond the media: the people who run them and the creative. Add those to ad spend if you want the full picture.
  • Each ad platform credits itself for a sale in its own way, so their ROAS figures do not add up across platforms.

FAQ

What ROAS is, how to work it out, and how to tell whether yours is good enough.

What is ROAS?

ROAS means return on ad spend: the revenue your ads produced divided by what they cost. A ROAS of 4x, also written 400%, means every $1 spent on ads brought back $4 in revenue.

How do I calculate ROAS?

Divide the revenue that came from your ads by the amount you spent on them, using the same period for both. $4,000 of revenue from $1,000 of ad spend is a ROAS of 4.00x. Multiply by 100 to write it as a percentage: 400%.

What is a good ROAS?

One that is above your break-even ROAS, and there is no single number that fits every business, because it depends on your margin. A business keeping 50% of each sale breaks even at 2x; one keeping 20% needs 5x. Work out your own break-even first, then judge your ads against it.

What is break-even ROAS?

The ROAS at which your ads neither make nor lose money. It is 1 divided by your profit margin: with a 40% margin, 1 ÷ 0.40 = 2.5, so you need $2.50 of revenue for every $1 of ads just to cover the cost of what you sold. Anything above that is profit.

How do I work out my profit margin?

Take the price of a sale, subtract what it costs you to deliver it (the product, shipping, payment fees, the labour on a job), and divide by the price. Selling for $100 something that costs $60 to deliver leaves $40, a 40% margin. Leave ad spend out: the calculator handles that part.

What is the difference between ROAS and ROI?

ROAS compares revenue with ad spend only. ROI compares profit with everything you invested, including the cost of goods and other expenses. ROAS tells you how hard your ad budget is working; ROI tells you whether the business made money. The break-even tab links the two for ads.

How much should I spend on ads?

Work backwards from the revenue you want. Divide the goal by your average order value to get the sales you need, divide those by your conversion rate to get clicks, and multiply by your cost per click. The budget planner tab does this and tells you whether the result is above break-even.

Why does my ad platform show a different ROAS?

Platforms count conversions their own way: which clicks or views get credit, over how many days, and with what value. The calculator uses the revenue and spend you type in, so it shows the return on your own books. If the two differ a lot, your conversion tracking is worth checking.

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