What is the difference between ROI and ROAS?

ROAS (Return on Ad Spend) measures only revenue generated per pound of ad spend. ROI (Return on Investment) factors in all costs — ad spend, cost of goods, and agency fees — to show actual profit. A campaign can have a strong ROAS but a poor ROI if the underlying costs are high.

It depends on your margins. A 4x ROAS is typical for ecommerce, but if your product cost is high, you may need 6x or more to actually be profitable. The calculator's break-even ROAS figure shows the minimum you need to hit to avoid losing money.

How do you calculate true ROI on ads?

True ROI = (Revenue − Total Cost) ÷ Total Cost × 100. Total Cost includes ad spend, cost of goods sold, and any agency or management fees. This gives you the percentage return after every cost has been accounted for.

Is this ROI calculator really free?

Yes, the calculator is 100% free to use. No sign-up, no email required, and no usage limits. Results are calculated instantly in your browser — your numbers are never sent to a server.

Free ROI & ROAS Calculator

Is your ad spend actually profitable?

Calculate your true ROI, ROAS, profit margin, and break-even in seconds. No sign-up. No email required. Just real numbers, instantly.

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Your campaign

STEP 01

Ad Spend Required

Revenue Generated Required

Cost of Goods / Fulfilment Optional

Include agency / management fees Flat fee, % of spend, or both

Agency Fee — flat Per period

Agency Fee — % of spend e.g. 15

Number of Conversions Unlocks CPA

Your results

Live

ROAS

0.00^x

Awaiting inputs

True ROI

0^%

Awaiting inputs

Net Profit

—

Profit Margin

—

Break-even ROAS

—

Total Cost

—

Cost Per Acquisition

—

Verdict Enter your ad spend and revenue to see how your campaign is really performing.

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How it works

No fluff, no sign-up — just plug in your numbers and read the result.

Enter what you spent

Total ad spend for the campaign or period you want to measure. Add COGS and agency fees if you want a fully-loaded picture.

Enter what you earned

Total revenue attributed to the campaign. Numbers update live as you type — no submit button, no waiting.

Get the real picture

ROAS, true ROI, net profit, margin, break-even, and CPA — the metrics that actually tell you what's working.

From the team at Easy Ecommerce Marketing

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821%

Average client PPC ROI

586%

Top client revenue growth in 2024

20+

Countries we work across

£299

Packages from, no contracts

The math, in case you're curious

No black boxes. Every number here comes from a simple formula you can verify yourself.

ROAS: Revenue ÷ Ad Spend — return per £1 of ad spend
True ROI %: (Revenue − Total Cost) ÷ Total Cost × 100
Net Profit: Revenue − Ad Spend − COGS − Agency Fees
Profit Margin %: Net Profit ÷ Revenue × 100
Break-even ROAS: Total Cost ÷ Ad Spend — the minimum ROAS to not lose money
CPA: Total Cost ÷ Conversions