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Ad ROAS & Break-Even CPA

Turn AOV, gross margin, and ad spend into break-even ROAS, break-even CPA, profit at a target ROAS, and how many units you need to cover the ads.

Calculate ROAS

Break-even ROAS Break-even CPA Target profit Units needed 40+ currencies
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Break-even ROAS & CPA

Gross margin is contribution after product COGS (and optional fees). No ad-platform APIs.

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Enter AOV and margin.

Profit at target ROAS

Uses the same AOV/margin/fee/refund inputs from Break-even.

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Set spend and ROAS.

Units / orders needed

How many orders to cover spend at break-even CPA, or from spend × conversion rate.

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Set spend and optional CVR/CPC.

Summary

One screen: break-even metrics + profit + units from your current inputs.

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Calculate from Break-even inputs.

Ad spend for a revenue goal

Required spend ≈ revenue goal ÷ target ROAS. Optional AOV estimates orders and CPA.

Optional
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Enter revenue goal and ROAS.

CPA to implied ROAS

If you know cost per acquisition and AOV, ROAS ≈ AOV ÷ CPA.

Optional
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Enter CPA and AOV.

Marketing efficiency ratio (MER)

MER = total revenue ÷ total ad spend. Optional AOV → orders.

Optional
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Enter revenue and spend.

Profit on ad spend (POAS)

POAS = profit ÷ ad spend. Optional revenue shows margin %.

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Enter profit and spend.

Target CPA from AOV + ROAS

Max CPA = AOV ÷ target ROAS.

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Enter AOV and ROAS.

Ad spend for profit goal

Spend = profit goal ÷ (ROAS × margin − 1) when ROAS×margin > 1.

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Enter profit, ROAS, margin.

How to use break-even ROAS

If contribution margin after product cost is 40%, break-even ROAS is about 1 ÷ 0.40 = 2.5x before fixed order fees and refunds. Below that, ads alone do not cover product cost. This page is educational math — not media-buying advice.

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FAQ

What is break-even ROAS?

Roughly 1 ÷ gross margin, adjusted for fixed order fees and refunds. At 40% margin you need about 2.5x before those frictions.

How do I calculate break-even CPA?

Contribution dollars per order after product cost, refund haircut, and fixed fees. Bidding above that loses money on ads alone.

Does this connect to ad platforms?

No. Static browser math only — no Meta, Google, or TikTok APIs.

Is this financial advice?

No. Educational estimates. Refunds, shipping, overhead, and creative tests change real break-even.

Is my data private?

Yes. All math runs in your browser.

What is break-even ROAS?

It is the return on ad spend where contribution covers ad cost (and optional extras). Below that ROAS, ads lose money on a contribution basis.

Do I need Google Ads or Meta connected?

No. Enter spend, AOV, margin, and optional conversion inputs manually. Nothing connects to ad accounts.

What AOV and margin do I need for ROAS math?

Average order value and contribution margin (or gross margin after variable costs) drive break-even ROAS. Wrong margin is the most common ROAS mistake.

Is MER the same as ROAS?

Not exactly. ROAS is usually return on a channel’s ad spend. MER blends marketing efficiency across channels. Use consistent definitions when you compare periods.

What if my ROAS is above break-even but cash is tight?

Contribution can look fine while inventory, refunds, or slow payouts squeeze cash. Pair ROAS with margin and payout timing, not vanity ROAS alone.

How do I set a target ROAS for a launch?

Start from contribution margin and required profit per order, then solve ROAS. Raise the target if you need room for creative tests and returns.

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