20ft container dimensions
If you are ordering a 20-foot shipping container for the first time — whether for international freight, on-site storage, or a conversion project — you are almost certainly asking three questions: Will my cargo fit inside? Can the ground support the loaded weight? And do I actually need a 20-footer, or should I go bigger?
The answers to all three live in the numbers. A standard 20-foot container delivers roughly 1,172 cubic feet of storage volume, 150 square feet of floor space, and payload capacity approaching 28,200 kg (62,170 lbs). Those numbers shift if you choose a high-cube unit, a refrigerated variant, or a flat rack configuration. This guide consolidates every dimension, weight rating, and capacity figure you need — in imperial, metric, and millimeter precision — and explains the practical realities that raw spec sheets rarely address.
What Are the Exact Dimensions of a 20-Foot Container?
The phrase “20-foot container” is a nominal designation, not a literal measurement of the interior. The exterior length is indeed 20 feet, but the interior length is shorter because the corrugated Corten steel walls and the plywood-over-steel floor consume space. All ISO Series 1 freight containers share a uniform width of 8 feet and a standard general-purpose height of 8 feet 6 inches, as defined by the ISO 668 international standard.
Exterior Dimensions
A standard 20-foot dry container measures exactly 20 feet long × 8 feet wide × 8 feet 6 inches high on the outside. In metric terms, that is 6.06 meters × 2.44 meters × 2.59 meters. These exterior dimensions are universal across every ISO-compliant 20-foot general-purpose container, regardless of manufacturer. They are what allow the container to lock securely onto chassis, railcars, and vessel cell guides anywhere in the world.
Interior Dimensions
The interior is smaller because the walls, roof, and floor structure consume approximately 4 inches of length, 4 inches of width, and 3–4 inches of height on each side. The standard interior dimensions are:
In feet and inches: 19 feet 4 inches long × 7 feet 8 inches wide × 7 feet 10 inches high.
In meters: 5.90 meters long × 2.35 meters wide × 2.39 meters high.
| Measurement | Exterior (Imperial) | Exterior (Metric) | Interior (Imperial) | Interior (Metric) |
|---|---|---|---|---|
| Length | 20 ft 0 in | 6.06 m | 19 ft 4 in | 5.90 m |
| Width | 8 ft 0 in | 2.44 m | 7 ft 8 in | 2.35 m |
| Height | 8 ft 6 in | 2.59 m | 7 ft 10 in | 2.39 m |
Dimensional Conversions Across All Units
If your project uses imperial, metric, or millimeter-specific drawings, here are the same numbers converted to every common unit:
| Measurement | Exterior | Interior |
|---|---|---|
| Length (inches) | 240 in | 232 in |
| Length (cm) | 606 cm | 589 cm |
| Length (mm) | 6,060 mm | 5,890 mm |
| Width (inches) | 96 in | 92 in |
| Width (cm) | 244 cm | 233 cm |
| Width (mm) | 2,440 mm | 2,330 mm |
| Height (inches) | 102 in | 94 in |
| Height (cm) | 259 cm | 240 cm |
| Height (mm) | 2,590 mm | 2,400 mm |
What Are the Door Opening Dimensions of a 20-Foot Container?
The door opening is the most frequently overlooked dimension — and the one that causes the most loading failures. The doors sit within a steel header beam and sill frame, which reduces the clear opening compared to the interior ceiling and floor.
| Door Opening | Imperial | Metric |
|---|---|---|
| Width | 7 ft 8 in | 2.34 m |
| Height | 7 ft 6 in | 2.28 m |
Critical warning: The door opening height is 4 inches shorter than the interior ceiling height because of the structural header beam above the doors. If you are loading tall items on a forklift, measure against the 7 ft 6 in door opening — not the 7 ft 10 in interior ceiling. A crate that clears the ceiling inside the container may still collide with the door header during entry.
How Much Can a 20-Foot Container Hold? Weight, Volume, and Capacity
Three numbers govern the load limits of a 20-foot container: tare weight (the empty container), payload (the maximum cargo weight it can carry), and maximum gross weight (the combined total of container plus cargo). Miscalculating any of these leads to rejected loads, road safety violations, or expensive overweight penalties.
Weight Specifications
| Specification | Imperial | Metric |
|---|---|---|
| Tare Weight (empty container) | ~5,070 lbs | ~2,300 kg |
| Maximum Payload (cargo only) | ~62,170 lbs | ~28,200 kg |
| Maximum Gross Weight (container + cargo) | ~67,200 lbs | ~30,480 kg |
Tare weight varies slightly by manufacturer, age, and floor type. A brand-new container with a thick marine-grade plywood floor may weigh closer to 2,300 kg, while an older unit with repairs could be lighter or heavier. Always confirm the specific tare weight stamped on the CSC (Convention for Safe Containers) safety plate affixed to the door of your actual container.
Volume and Floor Space
| Specification | Imperial | Metric |
|---|---|---|
| Storage Volume | 1,172 ft³ | 33.2 m³ |
| Floor Space | ~150 ft² | ~13.94 m² |
The usable volume of approximately 33 cubic meters is a theoretical maximum. In practice, the corrugated wall profile and the need for cargo securing and airflow reduce the realistically usable space to roughly 28–30 m³ for most loads.
Ground Pressure Considerations
If you are placing a container on asphalt, a residential driveway, or soft ground, factor in the gross weight. A fully loaded 20-foot container exerts roughly 3,300 lbs per linear foot across its two bottom side rails. Over time, that concentrated load can crack asphalt, sink into soil, or deform pavers. A concrete pad, compacted gravel base, or railroad ties are common solutions for permanent placement.
How Is a 20-Foot Standard Container Different from a 20-Foot High Cube?
A high-cube container adds exactly 1 foot to the exterior height — 9 feet 6 inches versus the standard 8 feet 6 inches. That single foot adds approximately 12 inches of interior clearance, 144 cubic feet of additional volume, and a modest increase in tare weight.
| Specification | Standard 20 ft | High Cube 20 ft |
|---|---|---|
| Exterior Height | 8 ft 6 in (2.59 m) | 9 ft 6 in (2.89 m) |
| Interior Height | 7 ft 10 in (2.39 m) | 8 ft 10 in (2.69 m) |
| Door Opening Height | 7 ft 6 in (2.28 m) | 8 ft 6 in (2.59 m) |
| Volume | 1,172 ft³ (33.2 m³) | 1,316 ft³ (37.3 m³) |
| Tare Weight | ~5,070 lbs (~2,300 kg) | ~5,335 lbs (~2,420 kg) |
| ISO Code | 22G0 | 22G1 |
High-cube 20-foot containers are less common than standard-height ones, but they are ideal for tall, lightweight cargo — think furniture, insulation, empty drums, or stacked empty pallets. They are also popular for container conversions (offices, tiny homes, workshops) where ceiling height matters for comfort and building code compliance.
How Many Pallets Fit in a 20-Foot Container?
Pallet count depends on pallet type, orientation, and whether you are loading a single tier or stacking.
| Pallet Type | Dimensions | Single-Tier Capacity |
|---|---|---|
| GMA (North American) | 48 × 40 in (1,220 × 1,016 mm) | 10 pallets |
| EUR / Euro pallet | 1,200 × 800 mm (47.2 × 31.5 in) | 11 pallets |
| ISO pallet | 1,200 × 1,000 mm | 9–10 pallets |
The 10 GMA pallets are loaded in two rows of five, oriented lengthwise. Euro pallets are loaded in a staggered pattern that yields 11 per tier. If your cargo is stackable and within weight limits, you can double or triple the per-tier count by stacking pallets — but the 28,200 kg payload ceiling is almost always the binding constraint before you run out of floor space.
A 20-foot container makes economic sense for cargo up to roughly 25–28 m³ or 15 tonnes. Beyond that threshold, a 40-foot container typically offers a lower cost per cubic meter. Below approximately 15 m³, compare against LCL (less-than-container-load) shipping before committing to a full container.
What Is the History of the 20-Foot Container and the TEU?
The 20-foot container is the foundation of the modern global shipping industry and the unit that defines the TEU — the twenty-foot equivalent unit, the universal measurement of containerized cargo capacity.
The story begins with American trucking entrepreneur Malcolm McLean, who in 1956 launched the first container ship voyage from Newark to Houston using 33-foot trailer bodies. That experiment proved that standardized boxes could slash loading costs by over 90%, but the industry quickly fragmented into competing sizes and corner-fitting designs. By the mid-1960s, shippers faced a mess of incompatible containers that could not be stacked or transferred between different vessels and trucks.
In 1968, the International Organization for Standardization (ISO) published ISO 668, which locked in the Series 1 container dimensions that dominate global trade to this day. The 20-foot × 8-foot × 8-foot-6-inch footprint became the universal standard, and the 40-foot variant followed as the logical double-length counterpart. The TEU was born as the counting unit: one 20-foot container equals 1 TEU, and one 40-foot container equals 2 TEU.
Today, approximately 85% of the world’s container fleet is either 20-foot or 40-foot dry containers. The 20-footer remains the most popular single size for heavy, dense cargo precisely because it reaches weight limits before volume limits — making it the most efficient choice for goods like steel, machinery, tiles, cement, and industrial components.
What Are the Different Types of 20-Foot Containers?
Not every 20-foot container is a standard dry box. The ISO 668 framework defines several specialized variants, each with distinct dimensions.
20-Foot Open Top Container
An open top container has a removable tarpaulin roof and a roof bow system instead of a solid steel roof. It is designed for cargo that is too tall to load through standard doors — such as heavy machinery, glass sheets, or logs — and must be lowered in by crane.
| Specification | Open Top 20 ft |
|---|---|
| Interior Length | 5.89 m (19 ft 4 in) |
| Interior Width | 2.35 m (7 ft 8 in) |
| Interior Height | 2.35 m (7 ft 9 in) — varies by design |
| Door Opening | Same as standard, plus top access |
| Typical Tare | ~2,400 kg |
20-Foot Flat Rack Container
A flat rack has collapsible or fixed end walls but no side walls and no roof. It is used for oversized cargo such as vehicles, pipes, generators, and construction equipment.
| Specification | Flat Rack 20 ft |
|---|---|
| Interior Length (between posts) | 5.57 m (18 ft 3 in) |
| Interior Width (between posts) | 2.19 m (7 ft 2 in) |
| Typical Tare | ~2,800 kg |
| Typical Payload | ~27,700 kg |
20-Foot Refrigerated Container (Reefer)
A reefer container incorporates an integrated refrigeration unit at the front (the “nose”), which reduces interior length compared to a dry container. The T-floor allows cold air to circulate beneath the cargo.
| Specification | Reefer 20 ft |
|---|---|
| Interior Length | ~5.45 m (17 ft 11 in) |
| Interior Width | ~2.29 m (7 ft 6 in) |
| Interior Height | ~2.27 m (7 ft 5 in) |
| Typical Tare | ~3,100 kg |
| Typical Payload | ~27,000 kg |
Reefers are shorter inside than dry containers because the refrigeration unit occupies approximately 45 cm (18 inches) of the interior length at the front wall.
How Much Space Is Needed to Deliver a 20-Foot Container?
Delivery logistics are often overlooked until the truck arrives. A standard 20-foot container delivery on a tilt-bed flatbed truck requires a minimum of 60 feet of straight-line clearance — 20 feet for the container itself and approximately 40 feet for the truck and trailer.
| Delivery Requirement | Minimum |
|---|---|
| Total straight-line clearance | 60 ft |
| Width of access path | 12 ft |
| Overhead clearance | 14 ft (no low branches, wires) |
| Ground surface | Level, firm — concrete, asphalt, or compacted gravel |
The delivery truck needs room to approach, align, and slide the container off the bed. If the delivery site is on a slope, around a tight corner, or on soft ground, additional clearance or a different delivery method (such as a crane or side-loader truck) may be required. Always communicate site conditions to the delivery company before the scheduled drop-off.
How Much Does a 20-Foot Container Cost?
Prices fluctuate with global steel markets, shipping demand cycles, and regional availability. As of 2025–2026, the approximate price ranges are:
| Condition | Price Range (USD) |
|---|---|
| Used (wind and water tight, 10–15 years old) | $1,500 – $3,000 |
| Used (one-trip / like-new, 1–3 years old) | $2,500 – $4,000 |
| New (factory-fresh) | $3,000 – $5,500 |
Used containers are graded by condition. A “wind and water tight” (WWT) container is structurally sound with no holes or leaks but may have surface rust, dents, and cosmetic wear. A “one-trip” container has been loaded with cargo only once and shows minimal wear — essentially a near-new unit at a discount. Prices also vary by location: containers near major ports (Los Angeles, Houston, New York/Newark, Savannah) are typically cheaper than those delivered inland.
What Are the Most Common Misconceptions About 20-Foot Containers?
Several persistent myths cause problems for first-time buyers and shippers.
“A 20-foot container has 20 feet of interior length.” The interior length is 19 feet 4 inches — the walls and doors consume the remaining 8 inches. If your cargo is exactly 20 feet long, it will not fit in a standard dry container.
“The door opening is the same as the interior height.” The door opening is 7 feet 6 inches high, while the interior ceiling is 7 feet 10 inches. The 4-inch difference is the steel header beam. Always measure against the door opening, not the interior height.
“All 20-foot containers weigh the same.” Tare weight varies by manufacturer, year, floor type, and repairs. Two containers of the same model year can differ by 200 kg or more. Always check the CSC plate.
“A 20-foot container is cheaper than a 40-foot container for every shipment.” On a per-cubic-meter basis, a 40-foot container is almost always cheaper. The 20-footer wins when your cargo is dense enough to reach the weight limit before filling the volume of a 40-foot box.
“You can stack containers indefinitely.” ISO containers are rated for specific stacking loads. A standard 20-foot container is typically rated for a stacking load of 192,000 kg at the corner posts, but ground conditions, inter-box connectors, and vessel stowage plans all impose practical limits.
How Does a 20-Foot Container Compare to a 40-Foot Container?
Understanding the trade-off between the two standard sizes is essential for any shipping or storage decision.
| Specification | 20 ft Standard | 40 ft Standard |
|---|---|---|
| Exterior Length | 20 ft (6.06 m) | 40 ft (12.19 m) |
| Interior Length | 19 ft 4 in (5.90 m) | 39 ft 5 in (12.03 m) |
| Interior Width | 7 ft 8 in (2.35 m) | 7 ft 8 in (2.35 m) |
| Interior Height | 7 ft 10 in (2.39 m) | 7 ft 10 in (2.39 m) |
| Volume | 1,172 ft³ (33.2 m³) | 2,390 ft³ (67.7 m³) |
| Tare Weight | ~5,070 lbs (~2,300 kg) | ~8,270 lbs (~3,750 kg) |
| Max Payload | ~62,170 lbs (~28,200 kg) | ~58,930 lbs (~26,730 kg) |
| Max Gross Weight | ~67,200 lbs (~30,480 kg) | ~67,200 lbs (~30,480 kg) |
| Pallet Capacity (EUR) | 11 | 25 |
| TEU Equivalent | 1 TEU | 2 TEU |
The key insight: a 20-foot container carries almost as much weight as a 40-foot container — roughly 28,200 kg versus 26,730 kg — but in half the volume. This is why 20-footers are the preferred choice for dense cargo. The 40-foot container, by contrast, is the volume play: it doubles the space for only about 1,500 kg more tare weight.
Frequently Asked Questions
What are the exact interior dimensions of a 20-foot container?
The standard interior dimensions are 19 feet 4 inches long × 7 feet 8 inches wide × 7 feet 10 inches high (5.90 m × 2.35 m × 2.39 m). These dimensions are specified by ISO 668 and are consistent across all major manufacturers, though minor variations of 5–10 mm are possible between individual units.
How many cubic meters is a 20-foot container?
A standard 20-foot dry container has a theoretical internal volume of approximately 33.2 cubic meters (1,172 cubic feet). In practice, the corrugated wall profile and the need for cargo securing and ventilation reduce the realistically usable volume to roughly 28–30 m³.
What is the door opening size of a 20-foot container?
The door opening measures 7 feet 8 inches wide by 7 feet 6 inches high (2.34 m × 2.28 m). The door height is 4 inches less than the interior ceiling height because of the structural header beam above the door frame.
How much does an empty 20-foot container weigh?
The tare weight of a standard 20-foot dry container is approximately 2,300 kg (5,070 lbs). This varies by manufacturer, age, floor type, and repair history. A high-cube 20-foot container weighs slightly more at approximately 2,420 kg. A refrigerated 20-foot container is heavier still at approximately 3,100 kg due to the integrated refrigeration unit.
What is the maximum weight a 20-foot container can carry?
The maximum payload (cargo weight) is approximately 28,200 kg (62,170 lbs). The maximum gross weight — the combined weight of the container plus cargo — is typically 30,480 kg (67,200 lbs), though some older containers are rated at 24,000 kg (52,910 lbs). Always verify the rating on the CSC safety plate affixed to the container door.
How many square feet is a 20-foot container?
A standard 20-foot container provides approximately 150 square feet (13.94 square meters) of floor space. This is calculated from the interior length of 19 feet 4 inches multiplied by the interior width of 7 feet 8 inches.
What is the difference between a 20-foot standard and a 20-foot high cube container?
A high-cube container is exactly 1 foot taller: 9 feet 6 inches exterior height versus 8 feet 6 inches for a standard. The interior height of a high cube is 8 feet 10 inches (2.69 m) versus 7 feet 10 inches (2.39 m). The extra foot adds approximately 144 cubic feet (4.1 m³) of volume, increasing total capacity from 33.2 m³ to 37.3 m³.
What is a TEU and why is it based on the 20-foot container?
TEU stands for twenty-foot equivalent unit and is the standard measurement of containerized shipping capacity. One 20-foot container equals 1 TEU, and one 40-foot container equals 2 TEU. The TEU was established by the ISO 668 standard in 1968 and has been the universal unit of container capacity ever since. Port throughput, vessel capacity, and global trade statistics are all measured in TEU.
What types of 20-foot containers are available besides the standard dry container?
The main variants include: open top (removable tarpaulin roof for top-loading tall cargo), flat rack (collapsible end walls, no sides or roof, for oversized cargo), refrigerated / reefer (integrated cooling unit for temperature-controlled goods), and ventilated (passive air vents for moisture-sensitive cargo like coffee or cocoa beans).
How much clearance is needed to deliver a 20-foot container to a residential property?
A minimum of 60 feet of straight-line clearance is needed for a standard tilt-bed flatbed truck delivery — 20 feet for the container and 40 feet for the truck and trailer. The access path should be at least 12 feet wide with 14 feet of overhead clearance (no low branches, wires, or eaves). The ground must be firm and level; concrete, asphalt, and compacted gravel are all suitable surfaces.
What are the dimensions of a 20-foot container in millimeters?
Exterior: 6,060 mm (L) × 2,440 mm (W) × 2,590 mm (H). Interior: 5,890 mm (L) × 2,330 mm (W) × 2,400 mm (H). Door opening: 2,340 mm (W) × 2,280 mm (H).
How much does a 20-foot container cost?
As of 2025–2026, used 20-foot containers (wind and water tight, 10–15 years old) range from $1,500 to $3,000. One-trip / near-new containers range from $2,500 to $4,000. Brand-new containers range from $3,000 to $5,500. Prices are lowest near major port cities and increase with inland delivery distance.