E-commerce Tools
Pricing, fees, shipping and inventory calculators for online sellers.
Product Profit Calculator
Calculate profit per unit from selling price, cost and fees.
Selling Price Calculator
Work backward from your desired profit margin to find the right selling price.
Amazon FBA Fee Calculator
Estimate Amazon referral and FBA fees to see your net proceeds.
Etsy Fee Calculator
Estimate Etsy listing, transaction and payment processing fees.
eBay Fee Calculator
Estimate eBay final value fees to see your net proceeds.
Shopify Fee Calculator
Estimate Shopify payment processing fees to see your net proceeds.
Shipping Cost Calculator
Estimate shipping cost from package dimensions and weight.
Bulk Discount Calculator
Calculate the discounted price and savings for tiered bulk orders.
Dropshipping Profit Calculator
Calculate profit per order after supplier cost, fees and ad spend.
Wholesale Margin Calculator
Calculate wholesale and retail margins from cost, wholesale and retail price.
Inventory Turnover Calculator
Calculate how many times your inventory is sold and replaced per year.
Reorder Point Calculator
Calculate when to reorder stock before you run out.
What this category covers
Pricing, marketplace fees, shipping and inventory calculators built for online sellers — platform-specific fee calculators for Amazon FBA, Etsy, eBay and Shopify, margin and markup tools, and inventory planning calculators.
How to choose the right tool
Before listing a product, use Selling Price Calculator or Product Profit Calculator to work backward from your target margin. Selling through a marketplace means checking that platform's exact fee structure — Amazon FBA Fee Calculator, Etsy Fee Calculator, eBay Fee Calculator and Shopify Fee Calculator each model a different platform's real fee schedule rather than a generic percentage. Wholesale and bulk sellers use Wholesale Margin Calculator and Bulk Discount Calculator; dropshippers use Dropshipping Profit Calculator, which factors in supplier cost separately from marketplace fees. Inventory planning uses Inventory Turnover Calculator to see how fast stock sells and Reorder Point Calculator to decide when to reorder before running out.
Common use cases
An Etsy seller checks their actual take-home profit after fees before pricing a handmade item; a dropshipper compares supplier cost against marketplace fees to confirm a product is still profitable; a warehouse manager calculates a reorder point to avoid stockouts during a busy season; a wholesaler sets a bulk discount tier using the Bulk Discount Calculator.