"nCAC is $53." Good or bad?
Nobody in the room can answer that. "$53 against a breakeven of $66" — now you know you can scale. A number without its threshold decided nothing. This works out yours from two inputs you already have.
A calculator, not a checklist.
Enter your margin and your first-order AOV. Every threshold below computes live and reads your own numbers against them. No spreadsheet, and nothing you type is sent anywhere — it runs entirely in your browser.
- Breakeven nCACThe most you can pay for a customer and still make money on the first order.
- Max nCAC at six monthsThe ceiling if you're willing to wait for the repeat purchase to arrive.
- Breakeven NC-ROAS and MERThe same formula at two different scopes, and why the gap between them is the rest of your marketing.
- The eleven numbersSplit across three cadences: what to read monthly, what to read weekly, what to read quarterly.
- Every formula, written outContribution, payback, six-month compound, repeat rate. Nothing hidden behind a black box.
- What's excluded, and whyCPA, blended ROAS, LTV to CAC, CPM, CTR, CVR. Each one has a reason it didn't make the set.
A metric earns its place by changing a decision. Everything else is a screenshot.
Every threshold here comes out of your own P&L. None of them is a benchmark borrowed from a brand that isn't yours, which is exactly why the calculator asks for your numbers instead of quoting somebody else's.
Where should I send it?
Three questions. They decide what I send you afterwards, so it's worth twenty seconds.
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Confirm and it's yours.
A confirmation email is on its way. Click the link inside and the calculator opens straight away — nothing else sends until you confirm.
Not there in five minutes? Look in promotions, and drag it to your primary so the next one lands properly.
Stop quoting numbers that decide nothing.
Eleven numbers, every formula, and a calculator that runs your own. Free. One email a week after that about ecommerce growth and ads — unsubscribe in one click.