Free E-commerce Tools & Calculators
Professional tools to help you optimize your e-commerce business. Calculate fees, analyze performance, and make data-driven decisions.
Amazon FBA Fee Calculator
Calculate total Amazon FBA fees including referral fees, fulfillment fees, and storage costs.
Use TooleBay Fee Calculator
Estimate eBay selling fees including final value fees, payment processing, and listing fees.
Use ToolInventory Turnover Calculator
Measure how efficiently your inventory is moving with our turnover ratio calculator.
Use ToolROI Calculator for Resellers
Calculate return on investment for your reselling business across all platforms.
Use ToolBreak-Even Analysis Tool
Find your break-even point and understand minimum pricing for profitability.
Use ToolInventory Valuation Calculator
Calculate total inventory value using FIFO, LIFO, or weighted average methods.
Use ToolWhy Use Our Tools?
Always Up-to-Date
Our calculators reflect the latest fee structures and policies from all major platforms.
100% Free
No hidden fees, no registration required. Use all tools completely free.
Professional Accuracy
Built by e-commerce experts with real-world selling experience.
Need More Advanced Tools?
Get access to automated calculators, bulk processing, and real-time data with Omni Inventory.