1 kg volumetric weight is a metric used in shipping to determine the chargeable weight of a package based on its dimensions rather than its actual mass. Carriers like FedEx, DHL, and UPS use this calculation to price shipments more fairly when transporting large, lightweight packages that consume valuable cargo space. To calculate 1 kg volumetric weight, multiply the length, width, and height (in cm), then divide by a dimensional factor—commonly 5000 for air freight. This value is then compared to the actual weight, and the higher one is used for billing. Understanding 1 kg volumetric weight is crucial for e-commerce sellers, as it directly impacts shipping costs and profitability. By optimizing packaging to reduce volume, businesses can lower shipping fees and streamline logistics across international or domestic routes.