Before you spend a cent, work out the two numbers that decide it: what a customer is worth to you, and the most you can pay to acquire one and still come out ahead.
Your test needs about 11 paying customers to break even.
Stop if spend reaches $125 with fewer than 3 paying customers, or if CAC stays above $24 after the full test budget.
The calculator runs client-side only. Nothing is saved or sent anywhere.
Enter your average order value, your product-plus-fees margin cost, and your monthly ad budget. We show you the most you can pay to acquire a customer and still come out ahead, the conversion rate a test needs to clear it, and a recommended test duration.
This is the same math jujugrowth runs automatically on your real order data on Pro, where every campaign brief comes with customer value, break-even CAC, test budget, and the stop conditions decided up front. If a campaign cannot pay for itself, the brief says so instead of pushing you to launch. Connect free to have it done from your live numbers instead of by hand.
Want it run on your actual store instead of typed-in guesses? Connect free in about five minutes, no card, and jujugrowth pulls your real customer value and break-even from your last 90 days.
Read-only OAuth. Official API only, no card, no trial clock, no spend changes. You approve every change.