Is this calculation private?

Yes, 100% of calculations run locally in your web browser. No information is stored or transmitted.

What does the E-commerce Breakeven ROAS Calculator give me?

It works out Contribution Margin, Gross Margin, Breakeven ROAS and Max Allowable CPA, updating live as you change the inputs.

What do I need to enter?

Just Average Order Value and COGS & Shipping Fulfillment. Every field has a sensible default you can start from.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

E-commerce Breakeven ROAS Calculator

Calculate target Return On Ad Spend (ROAS) and CPA required to break even on digital advertising campaigns.

100% free
Private in browser
No signup
No watermarks

Average Order Value ($)

COGS & Shipping Fulfillment ($)

Contribution Margin ($)

Gross Margin (%)

Breakeven ROAS (Multiplier)

1.67

Max Allowable CPA ($)

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About E-commerce Breakeven ROAS Calculator

Calculate target Return On Ad Spend (ROAS) and CPA required to break even on digital advertising campaigns. Enter Average Order Value and COGS & Shipping Fulfillment and the tool works out Contribution Margin, Gross Margin and Breakeven ROAS straight away. Everything runs in your browser, so your data never leaves your device.

How to use E-commerce Breakeven ROAS Calculator

Enter the required input values.
View the instantly calculated results in real time.

Key features

Fast client-side calculation
Real-time updates
Privacy-first design (no data leaves browser)

Frequently asked questions

Is this calculation private?: Yes, 100% of calculations run locally in your web browser. No information is stored or transmitted.
What does the E-commerce Breakeven ROAS Calculator give me?: It works out Contribution Margin, Gross Margin, Breakeven ROAS and Max Allowable CPA, updating live as you change the inputs.
What do I need to enter?: Just Average Order Value and COGS & Shipping Fulfillment. Every field has a sensible default you can start from.
Is my data uploaded anywhere?: No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
Does it work on a phone?: Yes. The layout adapts to small screens and needs no app or signup.

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