Seller & Business
Seller & Business Calculators
Price products, compare marketplace fees, protect margin, and plan freelance work.
10 tools
Etsy Fee & Profit Calculator
Estimate Etsy fees, costs, profit, and margin with editable fee assumptions.
PayPal & Stripe Fee Calculator
Estimate PayPal or Stripe fees, net proceeds, or the amount to charge.
Amazon Seller Fee Calculator
Estimate Amazon referral, fulfillment, storage, and product costs with editable assumptions.
Freelance Hourly Rate Calculator
Estimate a sustainable freelance hourly rate from income goals, expenses, taxes, and billable hours.
Invoice Late Fee Calculator
Estimate a simple or monthly-compounded late fee from invoice balance, rate, and overdue time.
Profit Margin and Markup Calculator
Calculate profit, margin, markup, and target selling prices from cost and revenue.
Sales Tax and VAT Calculator
Add or remove sales tax or VAT using an editable rate.
Shopify Profit Calculator
Estimate Shopify order profit after product, shipping, payment, advertising, and platform costs.
eBay Fee and Profit Calculator
Estimate eBay selling fees, costs, profit, and margin with editable assumptions.
invoice generator
Create a simple invoice and download as PDF.
How to use this collection
Choose the calculator that matches the decision you are making. Each tool explains its assumptions and keeps the primary calculation separate from any commercial recommendation.