20ftVS40ft

20ft vs 40ft Container: Sizes, Dimensions, and Specifications Explained

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  • by MI September 12, 2025

When shipping goods in the import-export business, one of the first decisions you’ll face is: Should I use a 20ft container or a 40ft container?

Both are standard container sizes used worldwide, but they have important differences in capacity, weight, and cost efficiency. Choosing the wrong size can increase your shipping costs or cause space issues.

In this guide, we’ll break down the 20ft vs 40ft container difference, their dimensions, specifications, and when to use each one.

 

1. What is a 20ft Shipping Container?

A 20ft container is the most commonly used in global trade.

  • External Dimensions: 20’ L × 8’ W × 8’6” H
  • Internal Volume: ~25–28 cubic meters
  • Maximum Payload (Weight Capacity): ~28,000 kg (28 tons)

Best For:

  • Heavy but compact cargo like metals, cement, machinery, and minerals.
  • Small and medium-sized shipments.
  • Businesses looking for lower overall shipping costs.

2. What is a 40ft Shipping Container?

A 40ft container is double the length of a 20ft container but doesn’t hold double the weight.

  • External Dimensions: 40’ L × 8’ W × 8’6” H
  • Internal Volume: ~55–60 cubic meters
  • Maximum Payload (Weight Capacity): ~28,000 kg (same as 20ft)

Best For:

  • Lightweight but bulky cargo like furniture, textiles, electronics, and toys.
  • Large shipments where volume matters more than weight.
  • Businesses wanting lower cost per cubic meter.

 

3. Key Differences – 20ft vs 40ft Container

Feature20ft Container40ft Container
Length20 feet40 feet
Internal Volume~28 m³~58 m³
Weight Capacity~28 tons~28 tons
Best ForDense, heavy goodsLarge, light goods
Shipping CostLower total costLower cost per cubic meter

4. 40ft High Cube Container (Extra Option)

Besides the standard 40ft, there’s also a 40ft High Cube Container.

  • External Dimensions: 40’ L × 8’ W × 9’6” H (1 foot taller)
  • Internal Volume: ~68 cubic meters
  • Best For: Very bulky, lightweight products like cotton, plastic products, or large equipment.

5. Which One Should You Choose?

  • External Dimensions: 40’ L × 8’ W × 9’6” H (1 foot taller)
  • Internal Volume: ~68 cubic meters
  • Best For: Very bulky, lightweight products like cotton, plastic products, or large equipment.

Simple Rule:

  • Heavy cargo → 20ft
  • Bulky cargo → 40ft
  • Extra bulky cargo → 40ft High Cube

Conclusion

Both 20ft and 40ft containers are essential for global trade, but choosing the right one depends on your cargo type, weight, and shipping budget.

By understanding their sizes, specifications, and differences, you can save costs and avoid shipping problems.

Whether you are new to the import-export business or an experienced trader, knowing the 20ft vs 40ft container difference will help you ship smarter and more efficiently.

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