BoxSplit is a completely free, no-signup web tool that helps Amazon FBA sellers minimize Inbound Placement Service fees. BoxSplit uses a custom bin-packing algorithm to calculate the mathematically optimal split based on your SKU dimensions, quantities, and current Amazon fee tiers. • No signup, no paywalls, no data collection • Supports US, UK, DE, FR, CA, AU, and JP marketplaces • Upload a CSV with hundreds of SKUs for instant optimization • Get exact FC addresses, box counts, and cost savings