What is the ROAS formula this calculator uses?

ROAS = revenue / cost, expressed as a ratio such as 4:1. Revenue rearranges to ROAS x cost, and cost to revenue / ROAS. The calculator applies whichever form matches the value you are solving for.

How does the ROAS Calculator turn ROAS into ROI?

ROI is (revenue - cost) / cost x 100. For a 4:1 ROAS on $1,000 of spend, revenue is $4,000, profit is $3,000, and ROI is 300% — the calculator shows both figures side by side.

What is break-even ROAS and how is it calculated?

Break-even ROAS is the minimum ratio needed to cover your costs, calculated as 1 / (profit margin / 100). A 25% margin needs a break-even ROAS of 4:1; a 50% margin needs only 2:1.

Can I calculate ad spend from a target ROAS and revenue goal?

Yes. Enter your target ROAS and desired revenue and leave the ad cost field blank — the calculator solves cost = revenue / ROAS for you.

It depends on your margin. Compare your ROAS to the break-even ROAS for your profit margin: anything above break-even is profitable, and the gap tells you how much room you have to scale spend.

Are my revenue and ad spend numbers uploaded anywhere?

No. The ROAS Calculator runs entirely in your browser. The revenue, cost, and margin figures you type are computed on your device and never sent to ArrayKit.

ROAS Calculator

Solve return on ad spend, revenue, or ad cost from any two values, right in your browser. Your campaign numbers stay on your device.

The ROAS Calculator runs entirely in your browser. The revenue, ad cost, and margin figures you enter are computed on your device and never uploaded to ArrayKit.

Open the CPM Calculator

About ROAS Calculator

The ROAS Calculator solves the return-on-ad-spend relationship in any direction. Enter any two of ROAS, revenue, and ad cost and it computes the third using ROAS = revenue / cost. Alongside the ratio it shows ROAS as a percentage and the return on investment (ROI) for the same numbers, plus a break-even ROAS helper that turns a profit margin into the minimum ratio you need just to cover spend. It is built for performance marketers, media buyers, and founders who price campaigns against margin and need a fast, exact number while reviewing a channel or setting a bid target. Results update as you type, with clear guards on zero and negative inputs. Everything runs in your browser, so revenue and spend figures never leave your device.

Features

Solve for ROAS from revenue and ad cost
Solve for revenue from ROAS and ad cost
Solve for ad cost from ROAS and revenue
Enter any two values, the third fills in automatically
Shows ROAS as both a ratio (4:1) and a percentage (400%)
Calculates ROI alongside ROAS for the same inputs
Break-even ROAS helper from a profit margin percentage
Runs entirely in your browser with no campaign data uploaded

How to use the ROAS Calculator

Type any two of ROAS, revenue, and ad cost
Read the computed third value below the inputs
Check the ROAS %, and ROI figures next to it
Enter your profit margin to see the break-even ROAS
Copy the summary to paste into a report or spreadsheet

Example

Input

revenue $4,000, cost $1,000

Output

ROAS = 4:1 (400%), ROI = 300%

$4,000 in revenue on $1,000 of ad spend is a 4:1 ROAS.

Common errors & troubleshooting

Result shows 'Enter any two of ROAS, revenue and ad cost to solve for the third.' — The calculator needs exactly two known values to solve the third. Fill in at least two of the ROAS, revenue, and ad cost fields.
Result shows 'Enter an ad cost greater than 0.' — ROAS and ROI both divide by ad cost, so it must be a positive number. Enter the actual spend that generated the revenue.
ROAS and ROI look confusingly different for the same campaign. — ROAS is revenue divided by cost (a ratio like 4:1). ROI is profit divided by cost, expressed as a percentage. A 4:1 ROAS is a 300% ROI because $3,000 of the $4,000 revenue is profit above the $1,000 spent.
Break-even ROAS shows no result. — Break-even ROAS needs a profit margin above 0%. Enter your product or campaign margin as a percentage, e.g. 25 for a 25% margin.

Frequently asked questions

What is the ROAS formula this calculator uses?: ROAS = revenue / cost, expressed as a ratio such as 4:1. Revenue rearranges to ROAS x cost, and cost to revenue / ROAS. The calculator applies whichever form matches the value you are solving for.
How does the ROAS Calculator turn ROAS into ROI?: ROI is (revenue - cost) / cost x 100. For a 4:1 ROAS on $1,000 of spend, revenue is $4,000, profit is $3,000, and ROI is 300% — the calculator shows both figures side by side.
What is break-even ROAS and how is it calculated?: Break-even ROAS is the minimum ratio needed to cover your costs, calculated as 1 / (profit margin / 100). A 25% margin needs a break-even ROAS of 4:1; a 50% margin needs only 2:1.
Can I calculate ad spend from a target ROAS and revenue goal?: Yes. Enter your target ROAS and desired revenue and leave the ad cost field blank — the calculator solves cost = revenue / ROAS for you.
Is a 4:1 ROAS good?: It depends on your margin. Compare your ROAS to the break-even ROAS for your profit margin: anything above break-even is profitable, and the gap tells you how much room you have to scale spend.
Are my revenue and ad spend numbers uploaded anywhere?: No. The ROAS Calculator runs entirely in your browser. The revenue, cost, and margin figures you type are computed on your device and never sent to ArrayKit.

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