Shopify Ad Test Budget Planner
Know how much to spend testing a product, and what conversion rate it needs to be worth scaling.
Free · No signup · Runs in your browser, nothing is saved or sent
Your results
Want experienced hands on your first tests? We set up tracking first, then test in a structured way.
Book a free callThese tools give estimates for planning, based on the numbers you enter. Fees, taxes and results vary by store, plan and country. This is not financial or tax advice.
What does the Ad Test Budget Planner do?
An ad test budget is the amount you are willing to spend on one product before you decide whether it works. This planner uses your break-even cost per sale, your cost per click and your expected conversion rate to show your likely cost per sale, the conversion rate you need to break even, and a sensible test budget per product and in total.
1. How to use this ad test budget planner?
- 1Enter your break-even CPA (use the Break-Even ROAS Calculator if you are not sure), your expected CPC and conversion rate.
- 2Check whether your expected cost per sale is below your break-even cost per sale.
- 3Use the test budget per product as a stop point, and the total to plan your cash.
What each input means
- Break-even cost per sale (CPA)
- from the Break-Even ROAS tool
- Cost per click (CPC)
- per click
- Expected conversion rate
- % of clicks that buy
- Test spend before you decide
- × your break-even CPA
- Products to test
- products
2. How is the ad test budget planner calculated?
- Expected cost per sale = CPC ÷ conversion rate
- Break-even conversion rate = CPC ÷ break-even CPA
- Clicks per sale = 1 ÷ conversion rate
- Test budget per product = break-even CPA × test multiple
- Total test budget = test budget per product × number of products
With a $21 break-even CPA, a $0.80 CPC and a 1.5% conversion rate, the expected cost per sale is $0.80 ÷ 0.015 = $53.33, which is more than 2.5 times your break-even. You would need a 3.81% conversion rate to break even. A 2.5× test budget is $52.50 per product, or $157.50 for 3 products.
3. Who should use this tool?
- New advertisers who do not know when to stop spending on a product that is not selling.
- Owners testing several products at once who need a total budget.
- Anyone whose ads get clicks but no sales and wants to see if the numbers can ever work.
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Check dropshipping profitAd Test Budget Planner: frequently asked questions
How much should I spend testing a product?
A common rule of thumb is to spend around two to three times your break-even cost per sale before deciding, but it is a guide and not a law. Judge the product on more than one data point, such as add-to-cart rate and click-through rate.
What is a good conversion rate for Shopify?
Many stores convert between about 1% and 3% of visitors, but it varies by product, price and traffic source. The useful number is the conversion rate you need to break even, which this tool calculates.
What if the conversion rate I need is unrealistic?
Then the product, price or costs need to change before you spend on ads. Raise the price, lower costs, or improve the product page and offer.
Is this tool a guarantee?
No. It turns your assumptions into numbers. Real results depend on the product, creative, audience and market.
Services that move these numbers
Meta Ads
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Learn more →Winning Product Research
Products found and validated through Facebook, Google and TikTok ad research and spy tools.
Learn more →Want an expert to look at your real numbers?
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