Container Size Standards and Their Load Capacity Explained

The size and load capacity of containers are key factors in cargo transportation. This article provides detailed information on various container internal and external dimensions, weight, and volume, assisting relevant industry professionals and freight forwarding companies in optimizing transport solutions while ensuring cargo safety. Understanding this fundamental information aims to enhance transportation efficiency and customer satisfaction, which is the primary objective of this report.
Container Size Standards and Their Load Capacity Explained

Containers play a vital role in international trade, with their dimensions and load capacity directly impacting transportation efficiency and safety. This article provides a comprehensive analysis of common container types, including their internal/external dimensions, payload, tare weight, and volume, serving as a reference for freight forwarders and industry professionals.

1. Overview of Common Container Dimensions

Type Internal Dimensions (L×W×H, m) External Dimensions (L×W×H, m) Payload (tons) Volume (m³)
20GP 5.898 × 2.352 × 2.385 6.058 × 2.438 × 2.591 17.5 33.1
40GP 12.032 × 2.352 × 2.385 12.192 × 2.438 × 2.591 22 67.5
40HQ 12.032 × 2.352 × 2.69 12.192 × 2.438 × 2.896 22 76.2
45HQ 13.556 × 2.352 × 2.698 13.716 × 2.438 × 2.896 29 86
20OT 5.898 × 2.352 × 2.342 6.058 × 2.438 × 2.591 20 32.5
40OT 12.034 × 2.352 × 2.330 12.192 × 2.438 × 2.591 30.5 65.9
20FR 5.650 × 2.030 × 2.073 6.058 × 2.438 × 2.591 22 24
20Refrigerated 5.480 × 2.286 × 2.235 6.058 × 2.438 × 2.591 17 28

The table reveals significant variations in internal and external dimensions among container types. Selection should be based on transportation requirements and cargo characteristics, with special containers like high cube (HQ) and open top (OT) being particularly suited for specific goods.

2. Payload and Tare Weight Considerations

Payload (maximum cargo weight) and tare weight (container's own weight) are critical factors in container selection. Standard container payloads typically range between 20 to 29 tons, though manufacturers' specifications should always be consulted. Accurate weight calculations during transportation are essential to prevent overloading risks.

3. Summary

Among various container specifications, 20GP, 40GP, and 40HQ containers remain the most commonly used options. Understanding container dimensions and capacity not helps optimize shipping costs but also ensures cargo safety. For freight forwarders, mastering this knowledge significantly enhances service quality and customer satisfaction.