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E-commerce Calculators
Free e-commerce profit calculators for Shopify, Amazon, eBay, and dropshipping sellers. Calculate real profit after platform fees, shipping costs, and all expenses.
7 free calculators — no signup, instant results
Shopify Profit Calculator
Calculate your true Shopify store profit after all fees and costs.
Amazon Seller Profit Calculator
Calculate your Amazon FBA profit after all fees and costs.
Dropshipping Profit Calculator
Calculate your true dropshipping profit after supplier costs, ads, fees, and returns.
Cost Per Unit Calculator
Calculate the true cost to produce one unit and find the right selling price.
eBay Seller Profit Calculator
Calculate your eBay profit after all fees, shipping, and costs.
Shipping Cost Calculator
Compare shipping costs across zones and calculate your shipping margin.
Product Pricing Calculator
Calculate the optimal product price from COGS and target margin.
Why Use E-commerce Calculators?
Tested Accuracy
Every formula is unit-tested with edge cases. No AI hallucination risk — just reliable math you can trust for real decisions.
Industry Benchmarks
Compare your results against real industry data. See how your numbers stack up with contextual benchmarks and verdicts.
Actionable Insights
Get severity-rated recommendations based on your specific numbers. Not generic advice — personalized next steps you can act on.
E-commerce Guides & Articles
In-depth articles to help you make better e-commerce decisions.
Hidden Amazon Seller Costs That Most Profit Calculators Miss
Beyond referral fees and FBA fees, Amazon sellers face at least eight additional cost lines. Here is every one, what it costs, and how to model it.
Dropshipping Profit Margins in 2026: The Real Numbers After Every Cost
Dropshipping margins look great on paper — no inventory, no warehouse. The five hidden cost lines between gross margin and real profit tell a different story. Here are the benchmarks and the math.
eBay Seller Fees in 2026: Every Cost Between Sale Price and Profit
eBay charges four distinct fee layers on every sale. Most sellers track one or two. Here is the full fee stack, category-specific rates, and how to model real per-item profit.
How to Calculate Amazon FBA Profit: A Step-by-Step Breakdown
Walk through each fee line that sits between your Amazon selling price and your actual profit. Worked example with real numbers and a free calculator.
Comparison Guides
Amazon FBA Calculator & Seller Tools
The full FBA fee stack (referral, FBA, storage, ads, returns) plus category-specific calculators for electronics, clothing, toys, books, health.
Read comparison →Shopify vs Amazon
Side-by-side fee comparison, hidden costs, and when to choose each platform.
Read comparison →