SellersMath.

Logistics & Freight Tools

Essential calculators for international shipping, Amazon FBA prep, and freight forwarding.

CBM Calculator

Calculate Cubic Meters (CBM) and Cubic Feet (CFT) for ocean freight and container loading.

Dimensional Weight (DIM)

Calculate volumetric weight for DHL, UPS, and FedEx to avoid hidden shipping costs.

Freight Density (PCF)

Determine your LTL Freight Class by calculating Pounds per Cubic Foot.

Why Accurate Logistics Math Matters

In global trade and eCommerce, shipping costs can make or break your profit margins. Couriers and freight forwarders don't just charge by actual weight; they charge by the amount of space your cargo takes up in a container, truck, or airplane. Whether you are shipping LCL (Less than Container Load) via ocean freight using CBM, or shipping domestic parcels via UPS using Dimensional Weight, our tools ensure you never overpay for logistics.