ROAS (Return on Ad Spend) is the revenue earned for every dollar spent on advertising. A ROAS of 4x means you earned $4 in revenue for every $1 spent. It is calculated as Ad Revenue divided by Ad Spend.

A "good" ROAS depends on your product margin. For a product with a 25% gross margin you need at least a 4x ROAS to break even on ad spend. Higher-margin products can survive on lower ROAS. Most ecommerce brands target 3x–6x depending on their category.

What is breakeven ROAS?

Breakeven ROAS is the minimum ROAS at which your ad revenue exactly covers your ad spend plus product costs. It equals 1 divided by your gross margin. For a 40% margin product, breakeven ROAS = 1 / 0.40 = 2.5x.

What is the difference between ROAS and ROI?

ROAS measures revenue relative to ad spend only. ROI measures net profit relative to the total investment (including product cost, overhead, etc.). ROAS is faster to calculate and widely used for campaign-level decisions; ROI gives a fuller picture of true profitability.

How do I improve a low ROAS?

Common approaches include tightening audience targeting to reach higher-intent buyers, improving ad creative and copy, raising the average order value through bundles or upsells, pausing low-performing ad sets, and testing new keywords or placements.

Does this tool store my data?

No. All calculations run entirely in your browser. Nothing is sent to any server or saved anywhere.

ROAS Calculator

Name: ROAS Calculator
Availability: InStock
Author: Nham Vu

Enter your ad revenue and ad spend to instantly calculate ROAS, CPA, profit, and the minimum revenue needed to break even.

Campaign Numbers

Ad Revenue (total revenue from ads)

Ad Spend (total cost of ads)

Product Gross Margin (optional, for profit calc)

Gross profit after product cost, before ad spend. Leave blank to skip profit/breakeven analysis.

Conversions (optional, for CPA)

Target ROAS (optional, for planning)

Enter your ad revenue and spend, then click Calculate

Return on Ad Spend (ROAS)

0.00x

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Ad Profit

Net Profit

—

CPA

—

Ad ROI

ROAS vs Breakeven —

0x Breakeven 10x+

Campaign Summary

Ad Revenue $0.00

Ad Spend - $0.00

Product Cost (est.) —

Net Profit —

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Summary

Enter your ad revenue and ad spend to instantly calculate ROAS, CPA, profit, and the minimum revenue needed to break even.

How it works

Enter the total revenue generated from your ad campaign.
Enter the total amount spent on ads for that campaign.
Optionally enter your product gross margin percentage to calculate net profit.
The calculator shows your ROAS ratio, profit after ad spend, and CPA.
The breakeven section tells you the minimum revenue needed at your current spend.
Use the Target ROAS field to see what revenue you need to hit a goal.

Use cases

Evaluate Google Ads, Meta Ads, or TikTok Ads campaign performance.
Set a minimum ROAS threshold before scaling ad spend.
Calculate the breakeven ROAS for a product with a known margin.
Compare ROAS across multiple campaigns or ad channels.
Justify ad budget increases to stakeholders with clear revenue data.
Find the cost per acquisition (CPA) for any campaign.
Plan target ad spend to hit a revenue goal at a desired ROAS.
Diagnose under-performing campaigns that are below breakeven ROAS.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu