Demystifying Conex Box Dimensions for Professionals
But what exactly are Conex box dimensions, and why do they matter? 🤔 In this guide, we’ll break down the different sizes, their uses, and how to choose the right one for your needs.

What Is a Conex Box?
A Conex box, originally developed for military use during the Korean War, is a standardized steel container designed for shipping, storage, and construction purposes. Today, these containers are widely used across various industries due to their durability, portability, and versatility.
Standard Conex Box Dimensions
Conex boxes come in various sizes, but the most common dimensions are 10 ft, 20 ft, and 40 ft. Below is a breakdown of the standard sizes:
Container Size | External Dimensions (L × W × H) | Internal Dimensions (L × W × H) | Volume (Cubic Feet) |
10 ft | 10’ x 8’ x 8.5’ (3.05 x 2.44 x 2.59m) | 9.3’ x 7.8’ x 7.9’ (2.83 x 2.34 x 2.39m) | ~560 cu ft |
20 ft | 20’ x 8’ x 8.5’ (6.1 x 2.44 x 2.59m) | 19.4’ x 7.8’ x 7.9’ (5.9 x 2.34 x 2.39m) | ~1,170 cu ft |
40 ft | 40’ x 8’ x 8.5’ (12.19 x 2.44 x 2.59m) | 39.4’ x 7.8’ x 7.9’ (12 x 2.34 x 2.39m) | ~2,390 cu ft |
High Cube Conex Box Dimensions
For industries needing extra vertical space, high cube containers are available in 40 ft and 45 ft options. These are 1 foot taller than standard Conex boxes, measuring 9.5 feet in height.
Container Size | External Dimensions (L × W × H) | Internal Dimensions (L × W × H) | Volume (Cubic Feet) |
40 ft HC | 40’ x 8’ x 9.5’ (12.19 x 2.44 x 2.89m) | 39.4’ x 7.8’ x 8.9’ (12 x 2.34 x 2.69m) | ~2,700 cu ft |
45 ft HC | 45’ x 8’ x 9.5’ (13.72 x 2.44 x 2.89m) | 44.4’ x 7.8’ x 8.9’ (13.54 x 2.34 x 2.69m) | ~3,040 cu ft |

Uses of Conex Boxes
Conex boxes have evolved beyond simple cargo transport. They are widely used in various industries, including:
1. Shipping & Logistics 🚢
- Used for ocean, rail, and truck transport.
- Intermodal containers compatible with ships, trains, and trucks.
- Standardized dimensions allow easy stacking and handling.
2. Storage & Warehousing 📦
- Ideal for temporary and long-term storage of goods.
- Weatherproof design protects contents from rain, wind, and theft.
- Can be modified with shelves, lighting, and insulation.
3. Construction & Modular Homes 🏗️
- Used for office spaces, homes, and mobile workstations.
- Affordable alternative to traditional building materials.
- High cube containers provide extra headroom for custom designs.
4. Retail & Pop-Up Businesses 🏪
- Trendy for mobile retail shops, food stalls, and coffee stands.
- Easily relocated for seasonal businesses.
- Eco-friendly alternative to brick-and-mortar stores.
Choosing the Right Conex Box Size
Para seleccionar el tamaño correcto, considera:
✅ Uso final: Transporte, almacenamiento o construcción modular.
✅ Espacio disponible: Verifica si la zona de entrega permite el tamaño del contenedor.
✅ Carga útil: Evalúa el peso y volumen de los bienes a almacenar o transportar.
✅ Presupuesto: Modelos más grandes tienen costos de compra y transporte más altos.
💡 Consejo: Si necesitas mayor capacidad, los High Cube ofrecen más espacio vertical sin ocupar más área en el suelo.
Conex Box Customization Options
Los Conex boxes pueden modificarse con:
- Puertas adicionales o enrollables para fácil acceso.
- Aislamiento térmico para control de temperatura.
- Ventilación y electricidad en usos como oficinas o talleres.
- Pisos reforzados para maquinaria pesada.
Regulations & Safety Considerations
⚠ Normativas clave a considerar:
- ISO 668: Dimensiones estándar de contenedores.
- CSC (Container Safety Convention): Certificación para transporte internacional.
- Peso máximo permitido: Debe cumplir con regulaciones de carga en puertos y carreteras.
Conclusion
Los Conex boxes son versátiles, resistentes y personalizables, adecuados para envíos, almacenamiento y construcción modular. Conociendo sus dimensiones y aplicaciones, puedes optimizar su uso según tus necesidades.
✔ Medidas estándar de 10, 20 y 40 pies.
✔ Opciones High Cube para más espacio interior.
✔ Usos diversos, desde transporte hasta viviendas.
Al elegir el contenedor correcto, aseguras eficiencia, seguridad y rentabilidad en tus proyectos. 🚢📦