Marketing ROI Engine

Ad Spend / ROAS Calculator

Calculate your actual ROAS, break-even ROAS, profit after ad spend, target CPA, and required conversion rate for your advertising campaigns.

ROAS Analysis

Actual ROAS

4×

Excellent

Break-Even ROAS

1×

Profit after Ad Spend

$14,980.00

Target CPA (for 20% margin)

$15,980.00

Profit Margin

74.9%

Revenue Breakdown

Revenue, COGS, ad spend, and profit

Revenue

$20,000.00

COGS

$20.00

Ad Spend

$5,000.00

Profit

$14,980.00

ROAS of 4× is well above break-even. Scale budget confidently while monitoring marginal ROAS at higher spend levels.

How to use it

Enter ad spend and either revenue generated directly, or conversion volume and average order value. Add product cost or COGS per unit and your target profit margin percentage.
Read actual ROAS, break-even ROAS, profit after ad spend, profit margin, and target CPA. Break-even ROAS is the minimum return needed just to cover cost of goods — anything below that means every sale loses money.
Interpret the ROAS health rating: Excellent means you have headroom to scale, Good means profitable but optimize before scaling, Caution means you're near break-even and should pause scale, Danger means the campaign is destroying value.
Use target CPA as the bidding ceiling in your ad platform. If your actual CPA exceeds the target, reduce bids, tighten targeting, or improve the post-click conversion rate before increasing budget.
Re-run weekly during active campaigns. Track ROAS by ad set and creative — blended ROAS hides underperforming segments that drag down profitable ones. Kill or pause segments below break-even first.

AI Integrations

Contract, discovery endpoints, and developer notes for agent use.

Always available for agents

Tool contract JSON

https://aibizhub.io/contracts/ad-spend-roas-calculator.json

Stable input and output contract for this exact tool.

Human review

People can use the browser page to sense-check outputs and charts, but agents should still execute against the contract and discovery endpoints.

/agent-tools.json - machine-readable tool index.
/llms.txt - human-readable model discovery guide.
/.well-known/webmcp.json - WebMCP capabilities manifest.
/.well-known/ai-plugin.json - plugin-style discovery manifest.

{
  "tool": "ad_spend_roas_calculator",
  "ad_spend": 5000,
  "revenue_generated": 20000,
  "product_cost": 20,
  "target_profit_margin_percent": 20
}

Open tool contract JSON Open AI integrations guide

Expand developer notes

Agent playbook

Resolve Ad Spend / ROAS Calculator from /agent-tools.json and open its contract before execution.
Validate inputs against the contract schema instead of scraping labels from the page UI.
Open the browser page only when a person wants to review charts, assumptions, or related tools.

Agent FAQ

Should ChatGPT, Claude, or another agent click through the UI?

No. Start with /agent-tools.json, then follow the tool's contract URL. The page UI is for human review, not parameter discovery.

When do tools show Quick and Advanced?

Every tool opens in Quick Start first. Advanced Controls keeps the same scenario, reveals more assumptions or diagnostics, and every tool keeps AI integrations inline below the instructions.

When should an agent still open the browser page?

Open it when a human wants to sense-check the output, review the chart, or keep exploring related tools after the calculation finishes.

Questions people usually ask

What is ROAS?

ROAS (Return on Ad Spend) = Revenue ÷ Ad Spend. A ROAS of 4× means you earned $4 for every $1 spent on ads. It measures revenue efficiency but does not account for product costs — always check profitability using break-even ROAS alongside it.

What is break-even ROAS?

Break-even ROAS is the minimum ROAS needed to cover cost of goods sold. Formula: 1 ÷ (1 − COGS%). If your product has 50% COGS, break-even ROAS is 2×. Any actual ROAS below this means you're selling at a loss after ad spend.

What is a good ROAS?

Good ROAS depends on your margins. For a product with 40% COGS, break-even ROAS is ~1.67×. A 4× ROAS on that product is excellent. For a product with 80% COGS, break-even ROAS is 5× — a 4× ROAS is losing money.

What is target CPA?

Target CPA (Cost Per Acquisition) is the maximum you can spend to acquire one customer while still hitting your target profit margin. Use it as a bidding ceiling in Google, Meta, or TikTok Ads to avoid over-spending per conversion.

Is this tool free and private?

Yes. AI Biz Hub tools run entirely in your browser with no signup required. Inputs stay local unless you share the URL.

Is this financial advice?

No. Outputs are planning estimates. Ad platform performance varies by audience, creative, and seasonality — validate with actual campaign data.

Related Resources

Learn the decision before you act

Every link here is tied directly to Ad Spend / ROAS Calculator. Use the explanation, formula, examples, and benchmarks to pressure-test the calculator output from first principles.

Browse all 4 resources

How To Use · 4

How To Use

4 STEPS

How to Use Landing Page Conversion Calculator

Project landing page revenue and ROI from visitor traffic, conversion rate, and average order value. Optimize page performance with clear unit economics.

Read

How To Use

3 STEPS

How to Use Marketing Budget Allocator

Distribute your marketing budget across channels by percentage. See dollar amounts, expected revenue per channel, and blended ROAS for your entire mix.

Read

How To Use

4 STEPS

How to Use Social Media ROI Calculator

Calculate social media return on investment from reach through engagement, clicks, and conversions. See cost per click, cost per conversion, and monthly profit.

Read

How To Use

5 STEPS

How to Use Ad Spend / ROAS Calculator

Master your ad budget and profitability with our Ad Spend / ROAS Calculator guide. Learn to evaluate campaign performance, set smart targets, and optimize your marketing ROI.

Read