---
title: "ROAS"
description: "ROAS is Return on Ad Spend: revenue divided by campaign cost. Learn how to calculate ROAS, how to read the result and how it differs from ROI."
url: "https://nodea.io/en/glossary/roas"
lang: "en"
updated: "2026-07-13"
---

# ROAS

> ROAS (Return on Ad Spend) is an advertising efficiency metric that shows how much revenue each unit of currency spent on a campaign generates.

**ROAS** (*Return on Ad Spend*) is an advertising efficiency metric that shows how much revenue each unit of currency invested in a campaign returns. It is one of the most important [KPIs](https://nodea.io/en/glossary/kpi) in performance marketing, especially in e-commerce, where every amount spent can be tied to a specific sale.

## How ROAS is calculated

The formula is simple:

**ROAS = campaign revenue / campaign cost**

If you spent 2,000 on advertising that generated 8,000 in revenue, your ROAS is 4 — that is, 400%. It means every unit spent returned fourfold in revenue. The result is expressed as a ratio (4:1), a multiple (4x) or a percentage (400%).

Bear in mind that ROAS works on **revenue, not profit**. A high ROAS on a thin margin does not necessarily mean the campaign is profitable — to judge that, you must factor in margin and operating costs.

## ROAS in practice

ROAS is the core metric for evaluating campaigns in [Google Ads](https://nodea.io/en/glossary/google-ads) and Meta Ads. Marketers use it to:

- optimise budget — shifting spend toward campaigns and ad groups with the highest ROAS,
- set profitability thresholds in automated bidding (target ROAS),
- compare the returns of different channels and products.

For ROAS to be trustworthy, you need accurate [conversion](https://nodea.io/en/glossary/conversion) tracking with transaction values attached — without it the figure is only an estimate. In analysis it is wise to pair ROAS with [cost per acquisition](https://nodea.io/en/glossary/cpa-cost-per-action) and margin, so you can tell campaigns that drive turnover apart from those that actually build profit.

### What counts as a good ROAS?

It depends on your margin. A 4:1 ROAS (400%) means four in revenue for every one spent, which is healthy for many stores. A low-margin business needs a higher ROAS to break even, while a high-margin one can be profitable at a ROAS close to 2:1.

### How is ROAS different from ROI?

ROAS measures revenue against ad cost. ROI (return on investment) measures profit — after subtracting all costs, not just advertising — against the total investment. ROAS speaks to campaign efficiency, ROI to real business profitability.

## Related

- [CPC (Cost Per Click)](https://nodea.io/en/glossary/cpc-cost-per-click)
- [Conversion](https://nodea.io/en/glossary/conversion)
- [Google Ads](https://nodea.io/en/glossary/google-ads)
- [KPI](https://nodea.io/en/glossary/kpi)
- [CPA (Cost Per Action)](https://nodea.io/en/glossary/cpa-cost-per-action)

---

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