---
title: "ROAS Calculator — Break-Even ROAS & Profit Per Ad Dollar"
description: "Calculate ROAS, break-even ROAS from your margins, net profit, and your maximum CPA. Know the number your ads must beat. Free, instant."
canonical: "https://aicontentdrop.com/tools/roas-calculator"
source: "https://aicontentdrop.com/tools/roas-calculator"
---
Free Creator Tool

# ROAS *Calculator*

Calculate ROAS, break-even ROAS from your margins, net profit, and your maximum CPA. Know the number your ads must beat. Free, instant.

Ad spend ($)

Revenue from ads ($)

Average order value ($)

Contribution margin

Contribution margin (%) — what is left of each order after product, shipping, and fees

Expected repeat revenue per customer ($)

(optional)

Enter your ad spend, revenue, average order value, and margin to see your ROAS, break-even point, net profit, and max CPA — results update live.

## Frequently asked questions

- **How is ROAS calculated?**
  
  Revenue attributed to ads ÷ ad spend. $5,000 revenue on $1,000 spend = 5.0 ROAS. It measures gross return — which is why ROAS alone can look great while you lose money.
- **What is break-even ROAS?**
  
  The ROAS at which you make $0 profit: 1 ÷ contribution margin. With a 40% margin after product costs and fees, break-even is 2.5 — every campaign below that loses money regardless of how healthy the ROAS looks.
- **What is a good ROAS?**
  
  Meaningless without your margin. A 3.0 ROAS is excellent for an 80%-margin digital product and underwater for a 25%-margin physical product. The calculator gives your verdict against your own break-even, not a generic benchmark.
- **What costs should go into contribution margin?**
  
  Product/COGS, payment processing, shipping, packaging, and marketplace or platform fees — everything that scales with each order. Fixed costs like salaries stay out.
- **What is max CPA and why does it matter?**
  
  The most you can pay to acquire one customer before losing money: AOV × contribution margin. It is the bid-cap number ad platforms actually ask you for.
- **Is my data stored?**
  
  No — everything computes in your browser. Nothing is sent or saved unless you email yourself the report.
- **Does the calculator handle first-order vs LTV thinking?**
  
  Yes — add expected repeat-purchase revenue and it shows both strict first-order break-even and the LTV-adjusted ceiling many subscription brands actually run on.
- **How do I lower my break-even ROAS?**
  
  Raise AOV (bundles), cut per-order costs, or raise prices. Break-even falls as margin rises — it is the only lever that makes every future campaign easier.

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