Free business calculators and seller tools

Marketplace fees and selling costs

Marketplace charges depend on category, seller plan, country, fulfillment method and advertising settings. Use the calculators to model your own order assumptions, then compare the estimate with current platform statements and official fee schedules.

• eBay Fee Calculator — estimate final value fees, order charges and promoted listing costs.
• Etsy Profit Calculator — model transaction, payment processing, listing and Offsite Ads fees.
• Amazon FBA Calculator — estimate referral, fulfillment, storage and advertising costs.
• Shopify Profit Calculator — estimate payment processing, plan allocation and order profit.
• TikTok Shop Profit Calculator — model referral fees, creator commissions and advertising.
• Marketplace Fee Comparison — compare assumptions across selling channels.

Pricing, margins and order economics

• Product Pricing & Profit Planner — calculate break-even and target selling prices.
• Profit Calculator — estimate contribution profit after variable costs.
• Price Calculator — work backward from a target profit margin.
• Break-Even Calculator — find the minimum price needed to cover order costs.
• Discount & Coupon Profit Calculator — model seller-funded discounts and their effect on margin.

Operations and cash flow

• Marketplace Payout Reconciliation — compare marketplace sales, deductions and settlement deposits.
• Shipping Dimensional Weight Calculator — estimate billable package weight.
• Inventory Reorder Calculator — estimate reorder points and safety stock.

Use estimates responsibly

Enter costs in a consistent currency and verify marketplace fee rates, taxes, shipping charges and account-specific discounts before making pricing decisions. A calculator estimate is not a payout guarantee or tax calculation.

For practical methods, read the true cost per order guide, pricing for profit guide and marketplace payout reconciliation guide.

Browse every category in the complete tools directory.