Featured ecommerce calculators
Start with the most important seller calculators. These pages are linked from the homepage because they cover the highest-intent ecommerce profit and advertising questions.
Seller profit tools
Ecommerce Profit Calculator for Sellers
Calculate net profit, margin, break-even ROAS, platform fees, payment fees, return loss, shipping cost, and maximum ad spend for ecommerce products.
ProfitNet product outcome
ROASAd break-even point
FeesPlatform cost model
Ecommerce Profit Calculator
General ecommerce
Average product selling price.
Expected units sold in the period.
Supplier, landed, or manufacturing cost.
Customer-paid shipping revenue.
Fulfillment, FBA, label, or supplier shipping.
Marketplace or app/platform fee.
Card or payment processor percentage.
Example: 0.30 for many card payments.
Campaign spend for these sales.
Estimated returned or refunded units.
Optional extra percentage cost.
Break-even ROAS Calculator
Find the minimum ROAS your ads need before a campaign becomes profitable.
Open calculatorFree Shopify Profit Calculator
Calculate Shopify net profit after Shopify Payments fees, shipping label cost, refunds, app overhead, and ads.
Calculate Shopify profitFree TikTok Shop Profit Calculator
Estimate TikTok Shop net profit after referral fees, payment fees, seller shipping, refunds, creator spend, and ads.
Calculate TikTok Shop profitFree Amazon FBA Profit Calculator
Calculate Amazon FBA profit after referral fees, FBA fulfillment fees, returns, storage overhead, and Sponsored Ads.
Calculate Amazon FBA profitFacebook Ads ROAS Calculator
Compare Meta ads ROAS with your real break-even point and net profit.
Open calculatorProduct Pricing Calculator
Test sale price, cost, fees, and ad room before launching or changing price.
Open calculatorLatest seller guides
These guides explain the formulas behind the calculators and link back to the tools that help you run your own numbers.
Break-even ROAS formula
Understand the formula behind break-even ROAS and why margin controls ad scaling.
Read guideHow to calculate Shopify profit
Calculate profit after product cost, payment fees, shipping, returns, apps, and ads.
Read guideHow to price ecommerce products
Use costs, fees, margin, and ad room to set profitable ecommerce prices.
Read guideWhat this ecommerce profit calculator includes
This calculator is built for ecommerce sellers who need a complete product-level profit view. It includes product cost, shipping cost, platform fees, payment processing fees, returns, tax or overhead, and advertising spend. The goal is to show whether a product can still make money after the costs that usually get missed in quick margin checks.
Use it before launching a product, changing price, increasing ad spend, testing a new marketplace, or deciding whether a campaign can scale. The calculator is not tied to one platform, so it can be used for Shopify stores, TikTok Shop, Etsy, Amazon-style marketplaces, dropshipping offers, and direct-to-consumer products.
Why break-even ROAS matters
ROAS alone does not tell you whether a campaign is profitable. Break-even ROAS shows the minimum return on ad spend required after the product's real cost structure. If your campaign ROAS is below break-even, sales volume can still lose money.
Core formulas
- Net profit = revenue + shipping charged - product cost - shipping cost - platform fees - payment fees - return loss - tax or overhead - ad spend.
- Profit margin = net profit divided by total revenue.
- Break-even ROAS = product revenue divided by gross profit before ads.
- Maximum ad spend = gross profit before ads.
Common seller mistakes
- Calculating margin before payment fees and marketplace fees.
- Ignoring return loss when testing a product with high refund risk.
- Scaling paid ads because ROAS looks good while net profit is negative.
- Comparing products only by revenue instead of profit per unit.
Is this calculator for Shopify, Amazon, Etsy, or TikTok Shop?
It can be used for all of them. Each dedicated calculator starts with platform-specific default assumptions, but you can edit every fee, shipping, return, and ad input.
What is a good ecommerce profit margin?
There is no universal number. A high-volume product with repeat purchases can work at a lower margin, while paid acquisition usually needs more room for ad spend, returns, and testing losses.
Why is my break-even ROAS so high?
Break-even ROAS rises when product cost, shipping, platform fees, payment fees, or return rate consume most of the sale price. The fastest fixes are usually price, landed cost, shipping cost, or offer structure.
Free seller worksheet coming soon
We are preparing a downloadable profit worksheet for sellers who want to compare multiple products and ad scenarios in one place.