Shipping containers come in a range of standardized sizes, each designed for specific storage, transport, and modification needs. Whether you're buying your first container for backyard storage or outfitting a commercial fleet, understanding the dimensions, capacity, and weight limits of each size is essential. This guide covers every standard size available from Maritime Container Services.
Standard Shipping Container Sizes
The global shipping industry uses two primary lengths — 20 feet and 40 feet — with height variations (standard vs. high cube) creating four main size categories.
20ft Standard Container
The 20ft standard container is the most popular size for residential and small business storage. It fits comfortably on most properties and can be delivered to locations with limited access.
| Dimension | Measurement |
|---|---|
| External Length | 20' (6.06m) |
| External Width | 8' (2.44m) |
| External Height | 8'6" (2.59m) |
| Internal Length | 19'4" (5.90m) |
| Internal Width | 7'8" (2.35m) |
| Internal Height | 7'10" (2.39m) |
| Door Opening | 7'8" W x 7'5" H |
| Cubic Capacity | 1,172 cu ft (33.2 m³) |
| Tare Weight | 4,916 lbs (2,230 kg) |
| Max Payload | 61,289 lbs (27,800 kg) |
Best for: Backyard storage, tool sheds, farm equipment, small inventory, single-car garages. Equivalent to a 10'×15' storage unit.
40ft Standard Container
The 40ft standard doubles the length and cargo space, making it the go-to size for commercial storage, warehousing, and large modification projects.
| Dimension | Measurement |
|---|---|
| External Length | 40' (12.19m) |
| External Width | 8' (2.44m) |
| External Height | 8'6" (2.59m) |
| Internal Dimensions | 39'5" x 7'8" x 7'10" |
| Cubic Capacity | 2,390 cu ft (67.7 m³) |
| Tare Weight | 8,380 lbs (3,800 kg) |
| Max Payload | 59,040 lbs (26,780 kg) |
Best for: Commercial warehousing, large equipment, vehicle storage, container homes, retail builds. Fits roughly 8 rooms of household furniture.
High Cube Containers (9'6" Tall)
High cube containers stand one foot taller than standard units at 9'6" external height. This extra 12 inches transforms interior usability — especially for racking systems, converted living spaces, and tall machinery.
| Feature | 20ft High Cube | 40ft High Cube |
|---|---|---|
| External Height | 9'6" (2.90m) | 9'6" (2.90m) |
| Internal Height | 8'10" (2.69m) | 8'10" (2.69m) |
| Cubic Capacity | 1,360 cu ft | 2,694 cu ft |
| Extra Capacity vs Standard | +16% | +13% |
Best for: Racking/shelving systems, container homes (standard ceiling height), office conversions, tall equipment. The 40ft high cube is the most popular size for container offices and workshops.
Specialty Container Types
Double Door Containers
Standard dimensions with full cargo doors on both ends, enabling drive-through forklift access. Available in 20ft and 40ft.
Open Side Containers
Feature full-length bi-fold doors along one side for unrestricted lateral access. Ideal for retail pop-ups, mobile workshops, and oversized cargo.
Open Top Containers
Removable tarpaulin roof with roof bows for top-loading with cranes. Perfect for oversized machinery and construction materials.
Refrigerated Containers (Reefers)
Integrated cooling unit maintaining -25°F to +77°F. Available in 20ft and 40ft for food, pharmaceuticals, and temperature-sensitive goods.
How to Choose the Right Size
- Measure what you're storing — List the largest items and total volume needed
- Consider access frequency — Frequent access? Choose 20ft or open side for easier reach
- Check site space — Ensure delivery truck clearance (65ft for 40ft containers)
- Plan for future growth — A slightly larger container costs marginally more but prevents needing a second unit
- Review local regulations — Some HOAs and municipalities limit container size on residential property
Still unsure which size fits your needs? Contact our team — we've helped over 5,000 customers find the right container. Or browse all sizes in our shop.