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Compare carriers, calculate dimensional weight, optimize free shipping thresholds, and maximize profit margins. Complete shipping analysis for e-commerce sellers.
Compare USPS, FedEx, UPS, and DHL rates instantly
Calculate DIM weight with carrier-specific divisors
Find optimal thresholds to boost sales
7 shipping zones with accurate multipliers
Add package insurance with carrier rates
Calculate costs for multiple packages with discounts
Build custom shipping rates for e-commerce
See your true profit after shipping costs
Shipping costs are calculated based on multiple factors including package weight, dimensions, distance, carrier, and service level. Understanding these factors helps you optimize costs and improve profit margins.
DIM Weight = (Length x Width x Height) / DivisorCarriers charge based on whichever is greater: actual weight or dimensional weight. This prevents large, lightweight packages from taking up valuable space at low rates. USPS uses a divisor of 166, while FedEx, UPS, and DHL use 139.
Offering free shipping can significantly increase conversion rates and average order value. The key is setting the right threshold - typically 20-30% above your average order value. This encourages customers to add more items while maintaining profitability.