{
  "source": "https://contsize.com",
  "license": "Free to reuse with attribution to contsize.com",
  "method": "https://contsize.com/container-spec-variance/",
  "fields": {
    "field": "the specification being compared; weights in kg, lengths in mm, volume in m3",
    "observations": "one entry per publisher, recorded verbatim from its own page on the fetched date",
    "valueMax": "present only where the publisher gives a range",
    "spread": "max − min across all published figures, in the field unit",
    "note": "a neutral remark about the figure, e.g. an internal contradiction in the source"
  },
  "caveat": "A spread is not an error rate. Real containers vary by manufacturer and build year, so some disagreement is legitimate; the point of this dataset is that the size of the disagreement was never published.",
  "updated": "2026-09-16",
  "counts": {
    "comparisons": 12,
    "sources": 7,
    "observations": 45
  },
  "comparisons": [
    {
      "containerId": "20ft",
      "label": "20 ft dry",
      "field": "tareKg",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 2300
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 2350
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 2230
        }
      ],
      "min": 2230,
      "max": 2350,
      "spread": 120
    },
    {
      "containerId": "20ft",
      "label": "20 ft dry",
      "field": "payloadKg",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 25000
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 28130
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 28250
        }
      ],
      "min": 25000,
      "max": 28250,
      "spread": 3250
    },
    {
      "containerId": "20ft",
      "label": "20 ft dry",
      "field": "internalHeightMm",
      "observations": [
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 2395
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 2393
        }
      ],
      "min": 2393,
      "max": 2395,
      "spread": 2
    },
    {
      "containerId": "20ft",
      "label": "20 ft dry",
      "field": "volumeM3",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 33.2
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 33.2
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 33.2
        }
      ],
      "min": 33.2,
      "max": 33.2,
      "spread": 0
    },
    {
      "containerId": "40ft",
      "label": "40 ft dry",
      "field": "tareKg",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 3750
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 3750
        },
        {
          "source": "Logisber",
          "url": "https://logisber.com/blog/contenedor-40-pies",
          "fetched": "2026-09-16",
          "value": 3500,
          "valueMax": 3750,
          "note": "Published as a range."
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 3740
        }
      ],
      "min": 3500,
      "max": 3750,
      "spread": 250
    },
    {
      "containerId": "40ft",
      "label": "40 ft dry",
      "field": "payloadKg",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 27600
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 28750
        },
        {
          "source": "Logisber",
          "url": "https://logisber.com/blog/contenedor-40-pies",
          "fetched": "2026-09-16",
          "value": 29000,
          "note": "Also states \"up to 32 tonnes with carrier approval\", which exceeds the 30,480 kg most 40 ft boxes are plated for once tare is added."
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 26740
        }
      ],
      "min": 26740,
      "max": 29000,
      "spread": 2260
    },
    {
      "containerId": "40ft",
      "label": "40 ft dry",
      "field": "internalLengthMm",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 12030
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 12032
        },
        {
          "source": "Logisber",
          "url": "https://logisber.com/blog/contenedor-40-pies",
          "fetched": "2026-09-16",
          "value": 12000
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 12032
        }
      ],
      "min": 12000,
      "max": 12032,
      "spread": 32
    },
    {
      "containerId": "40ft",
      "label": "40 ft dry",
      "field": "volumeM3",
      "observations": [
        {
          "source": "DSV",
          "url": "https://www.dsv.com/es-mx/nuestras-soluciones/modos-de-transporte/transporte-maritimo/tipos-contenedor-maritimo/contenedor-dry",
          "fetched": "2026-09-16",
          "value": 67.7
        },
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 67.7
        },
        {
          "source": "Logisber",
          "url": "https://logisber.com/blog/contenedor-40-pies",
          "fetched": "2026-09-16",
          "value": 60,
          "valueMax": 67,
          "note": "Published as a range."
        },
        {
          "source": "iContainers",
          "url": "https://www.icontainers.com/es/ayuda/contenedor-40-pies/",
          "fetched": "2026-09-16",
          "value": 76,
          "note": "The page heads this figure \"40 ft standard\", but 76 m³ together with the 2.90 m external and 2.69 m internal height it publishes are high-cube values."
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 67.7
        }
      ],
      "min": 60,
      "max": 76,
      "spread": 16
    },
    {
      "containerId": "40hc",
      "label": "40 ft high cube",
      "field": "tareKg",
      "observations": [
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 3900
        },
        {
          "source": "Oceanbox Containers",
          "url": "https://www.oceanboxcontainers.com/container/40ft-high-cube-container/",
          "fetched": "2026-09-16",
          "value": 4020
        },
        {
          "source": "iContainers",
          "url": "https://www.icontainers.com/es/ayuda/contenedor-40-pies/",
          "fetched": "2026-09-16",
          "value": 4150,
          "note": "Published as an average."
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 3900
        }
      ],
      "min": 3900,
      "max": 4150,
      "spread": 250
    },
    {
      "containerId": "40hc",
      "label": "40 ft high cube",
      "field": "payloadKg",
      "observations": [
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 28600
        },
        {
          "source": "Oceanbox Containers",
          "url": "https://www.oceanboxcontainers.com/container/40ft-high-cube-container/",
          "fetched": "2026-09-16",
          "value": 26460
        },
        {
          "source": "ContainerMath",
          "url": "https://containermath.com/how-many/standard-pallets-in-a-40ft-high-cube-container",
          "fetched": "2026-09-16",
          "value": 26500
        },
        {
          "source": "iContainers",
          "url": "https://www.icontainers.com/es/ayuda/contenedor-40-pies/",
          "fetched": "2026-09-16",
          "value": 26000,
          "valueMax": 29000,
          "note": "Published as a range."
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 28600
        }
      ],
      "min": 26000,
      "max": 29000,
      "spread": 3000
    },
    {
      "containerId": "40hc",
      "label": "40 ft high cube",
      "field": "internalHeightMm",
      "observations": [
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 2700
        },
        {
          "source": "Oceanbox Containers",
          "url": "https://www.oceanboxcontainers.com/container/40ft-high-cube-container/",
          "fetched": "2026-09-16",
          "value": 2690
        },
        {
          "source": "ContainerMath",
          "url": "https://containermath.com/how-many/standard-pallets-in-a-40ft-high-cube-container",
          "fetched": "2026-09-16",
          "value": 2700
        },
        {
          "source": "iContainers",
          "url": "https://www.icontainers.com/es/ayuda/contenedor-40-pies/",
          "fetched": "2026-09-16",
          "value": 2690
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 2698
        }
      ],
      "min": 2690,
      "max": 2700,
      "spread": 10
    },
    {
      "containerId": "40hc",
      "label": "40 ft high cube",
      "field": "volumeM3",
      "observations": [
        {
          "source": "FreightTotals",
          "url": "https://freighttotals.com/container-dimensions/",
          "fetched": "2026-09-16",
          "value": 76.3
        },
        {
          "source": "Oceanbox Containers",
          "url": "https://www.oceanboxcontainers.com/container/40ft-high-cube-container/",
          "fetched": "2026-09-16",
          "value": 76.04
        },
        {
          "source": "ContSize",
          "url": "https://contsize.com/data/containers.json",
          "fetched": "2026-09-16",
          "value": 76.4
        }
      ],
      "min": 76.04,
      "max": 76.4,
      "spread": 0.36
    }
  ]
}