ROAS Calculator

A ROAS calculator tells you how much revenue each unit of ad spend brings back. You enter the revenue attributed to a campaign and the amount you spent, and it returns your return on ad spend as a clean multiple like 4.0x, the same figure as a percentage, and your ROI.

Everything runs in your browser, so the numbers update as you type and nothing you enter leaves your device. Add an optional profit margin and the tool also shows the break-even ROAS you need to stay in the black.

How to use the ROAS calculator

Enter the revenue from ads and the ad spend for the same period and channel. The ROAS, its percentage form, and your ROI appear instantly below.

If you know your profit margin, type it in as a percent. The calculator then shows your break-even ROAS and tells you whether the campaign is actually profitable, not just busy.

ROAS vs ROI vs break-even

ROAS is revenue divided by spend, so 4.0x means every 1 spent returned 4 in ad revenue. ROI is stricter: it is profit over spend, so a 4.0x ROAS is a 300% ROI because you keep the revenue minus the spend.

Break-even ROAS is where product costs come in. If your margin is 40%, you need at least a 2.5x ROAS just to cover the cost of goods, which is why a headline ROAS can look healthy while the campaign still loses money.

Why ROAS matters for ad budgets

Comparing ROAS across channels shows where each extra dollar works hardest, which is the fastest way to decide where to scale and where to cut. Pairing it with your margin keeps those decisions grounded in real profit.

Media buyers often check the cost side too, so it helps to sit ROAS next to a CPM Calculator for impression pricing. To turn a target margin into the ROAS you actually need, a Gross Margin Calculator gives you the exact figure, and a quick Percentage Calculator is handy for sanity-checking the percent conversions.

Frequently Asked Questions

What is a good ROAS?

It depends on your margins. A common rule of thumb is 4.0x, but a business with thin margins may need much higher, while one with high margins can profit at a lower ROAS. Compare your ROAS to your break-even ROAS rather than to a fixed number.

How is ROAS calculated?

ROAS is revenue from ads divided by ad spend. Spend 2,000 to earn 8,000 and your ROAS is 8,000 ÷ 2,000 = 4.0x, or 400%. The calculator also shows ROI, which is the profit portion, (revenue − spend) ÷ spend.

What is break-even ROAS?

Break-even ROAS is 1 divided by your profit margin. At a 40% margin (0.4), break-even is 1 ÷ 0.4 = 2.5x, meaning you must return at least 2.5 for every 1 spent to cover product costs before the campaign turns a profit.

Is my data sent anywhere?

No. The whole calculation happens locally in your browser with JavaScript. Nothing you type is uploaded, logged, or stored, and the tool keeps working offline once the page has loaded.