Free tools for ecommerce sellers
Calculate profit before you scale your store
Free ecommerce and business calculators for sellers, marketers, and small business owners.
Example net profit
$1,339.50
Margin
29.77%
ROI
42.38%
Model Shopify, Etsy, Amazon FBA, advertising, pricing, and break-even scenarios with clear formulas.
Ecommerce and business calculators
Select a free calculator to understand fees, set sustainable prices, review advertising, or plan the sales needed to cover costs.
Ecommerce Profit
Shopify Profit Calculator
Estimate Shopify store revenue, fees, advertising cost, net profit, margin, ROI, and break-even ROAS.
Use calculatorMarketplace Fees
Etsy Fee Calculator
Estimate Etsy transaction, payment processing, listing, and optional offsite ad fees alongside your net profit.
Use calculatorMarketplace Profit
Amazon FBA Profit Calculator
Model Amazon FBA revenue, referral and fulfillment fees, inventory costs, advertising, margin, and ROI.
Use calculatorBusiness Fundamentals
Profit Margin Calculator
Turn revenue and cost into gross profit, profit margin, and markup for fast pricing analysis.
Use calculatorPricing
Markup Calculator
Set a markup above cost and see the resulting selling price, dollar profit, and profit margin.
Use calculatorPerformance
ROI Calculator
Measure net return and return on investment for inventory, software, promotions, or business projects.
Use calculatorAdvertising
ROAS Calculator
Calculate return on ad spend and revenue after advertising cost for ecommerce campaign review.
Use calculatorPlanning
Break Even Calculator
Find contribution margin, units needed to recover fixed costs, and the revenue required to break even.
Use calculatorWhy use Ecom Profit Tools?
A sale is only useful when it supports a healthy business. Use straightforward estimates to make better informed selling choices.
Clear profit decisions
See the costs behind a sale before adjusting prices, promotions, or advertising budgets.
Seller-focused inputs
Model channel fees, fulfillment, paid ads, margins, and return metrics using practical fields.
Fast and private
All calculations run in your browser. No signup or stored financial inputs are required.
Popular ecommerce calculators
Ecommerce Profit
Shopify Profit Calculator
Estimate Shopify store revenue, fees, advertising cost, net profit, margin, ROI, and break-even ROAS.
Use calculatorMarketplace Fees
Etsy Fee Calculator
Estimate Etsy transaction, payment processing, listing, and optional offsite ad fees alongside your net profit.
Use calculatorMarketplace Profit
Amazon FBA Profit Calculator
Model Amazon FBA revenue, referral and fulfillment fees, inventory costs, advertising, margin, and ROI.
Use calculatorAdvertising
ROAS Calculator
Calculate return on ad spend and revenue after advertising cost for ecommerce campaign review.
Use calculatorFrequently asked questions
Are Ecom Profit Tools calculators free to use?+
Yes. The calculators are free, work in your browser, and do not require an account.
Do you store the numbers I enter?+
No. The current calculators run in your browser and do not send entries to a database.
Are the calculations financial or tax advice?+
No. Results are general estimates for education and planning. Verify rates and costs, and consult qualified advisers when necessary.
Which calculator should an ecommerce seller start with?+
Use a marketplace-specific profit tool when selling on Shopify, Etsy, or Amazon FBA. Use margin, ROI, ROAS, and break-even tools for broader pricing and performance decisions.