{
  "site": {
    "name": "Sizelane",
    "url": "https://sizelane.com/",
    "about": "https://sizelane.com/about",
    "license": "CC BY 4.0",
    "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "Name Sizelane, link to the brand page and keep the brand's official source link."
  },
  "page": "https://sizelane.com/allbirds-size-chart",
  "brand": "Allbirds",
  "slug": "allbirds",
  "category": "casual",
  "origin": "US",
  "checked": "2026-10-24",
  "officialLinks": {
    "website": "https://www.allbirds.com/",
    "sizeGuide": "https://www.allbirds.com/products/mens-tree-runners",
    "help": "https://www.allbirds.com/pages/help",
    "regional": [
      {
        "market": "UK",
        "url": "https://www.allbirds.co.uk/"
      },
      {
        "market": "Germany",
        "url": "https://allbirds.de/en/"
      },
      {
        "market": "Australia",
        "url": "https://www.allbirds.com.au/"
      },
      {
        "market": "New Zealand",
        "url": "https://www.allbirds.co.nz/"
      },
      {
        "market": "Switzerland",
        "url": "https://allbirds.ch/"
      },
      {
        "market": "Ireland",
        "url": "https://www.allbirds.ie/"
      },
      {
        "market": "Belgium",
        "url": "https://www.allbirds.be/"
      },
      {
        "market": "Netherlands",
        "url": "https://www.allbirdsbenelux.nl/"
      },
      {
        "market": "UAE",
        "url": "https://allbirds.ae/"
      },
      {
        "market": "Saudi Arabia",
        "url": "https://allbirds.sa/"
      }
    ],
    "collections": [
      {
        "label": "Men's Shoes",
        "url": "https://www.allbirds.com/collections/mens"
      },
      {
        "label": "Women's Shoes",
        "url": "https://www.allbirds.com/collections/womens"
      },
      {
        "label": "Men's Active",
        "url": "https://www.allbirds.com/collections/mens-active-shoes"
      },
      {
        "label": "Women's Active",
        "url": "https://www.allbirds.com/collections/womens-active-shoes"
      },
      {
        "label": "Men's Sandals",
        "url": "https://www.allbirds.com/collections/mens-sandals"
      }
    ]
  },
  "sizeCharts": [
    {
      "id": "men",
      "label": "Men's Tree Runner (allbirds.com fit guide)",
      "source": "https://www.allbirds.com/products/mens-tree-runners",
      "lengthMeaning": "unstated",
      "lengthScales": {
        "CM": "size"
      },
      "columns": [
        "US",
        "UK",
        "CM"
      ],
      "rows": [
        [
          "8",
          "7",
          "26"
        ],
        [
          "9",
          "8",
          "27"
        ],
        [
          "10",
          "9",
          "28"
        ],
        [
          "11",
          "10",
          "29"
        ],
        [
          "12",
          "11",
          "30"
        ],
        [
          "13",
          "12",
          "31"
        ],
        [
          "14",
          "13",
          "32"
        ]
      ],
      "notes": "Allbirds has no general size chart page; each product page has a 'Fit Guide' with US, UK and cm. This is the men's Tree Runner (the men's Wool Runner page shows the same values; allbirds.co.uk shows the same). Whole sizes only. The page does not say whether cm is foot or shoe length.",
      "corrections": [],
      "lengthAnomalies": [],
      "csv": "https://sizelane.com/data/brands/allbirds-men.csv"
    },
    {
      "id": "women",
      "label": "Women's Tree Runner (allbirds.com fit guide)",
      "source": "https://www.allbirds.com/products/womens-tree-runners",
      "lengthMeaning": "unstated",
      "lengthScales": {
        "CM": "size"
      },
      "columns": [
        "US",
        "UK",
        "CM"
      ],
      "rows": [
        [
          "5",
          "2 - 2.5",
          "22"
        ],
        [
          "6",
          "3 - 3.5",
          "23"
        ],
        [
          "7",
          "4-4.5",
          "24"
        ],
        [
          "8",
          "5 - 5.5",
          "25"
        ],
        [
          "9",
          "6 - 6.5",
          "26"
        ],
        [
          "10",
          "7 - 7.5",
          "27"
        ],
        [
          "11",
          "8 - 8.5",
          "28"
        ]
      ],
      "notes": "Product fit guide for the women's Tree Runner. Whole US sizes only; UK is printed as a range. The page does not say whether cm is foot or shoe length.",
      "corrections": [],
      "lengthAnomalies": [],
      "csv": "https://sizelane.com/data/brands/allbirds-women.csv"
    },
    {
      "id": "men",
      "label": "Men's Tree Runner (allbirds.de size chart, with EU)",
      "source": "https://allbirds.de/en/products/m-tree-runner-casual-shoes-960tr3mjbk0026",
      "lengthMeaning": "unstated",
      "lengthScales": {
        "CM": "size"
      },
      "columns": [
        "EU",
        "UK",
        "US",
        "CM"
      ],
      "rows": [
        [
          "41",
          "7",
          "8",
          "26"
        ],
        [
          "42",
          "8",
          "9",
          "27"
        ],
        [
          "43",
          "9",
          "10",
          "28"
        ],
        [
          "44",
          "10",
          "11",
          "29"
        ],
        [
          "45",
          "11",
          "12",
          "30"
        ],
        [
          "46",
          "12",
          "13",
          "31"
        ],
        [
          "47",
          "13",
          "14",
          "32"
        ]
      ],
      "notes": "From the size chart on the allbirds Germany product page (operated for Allbirds by CHRIS box AG per its legal notice); same US/UK/cm values as allbirds.com, plus EU.",
      "corrections": [],
      "lengthAnomalies": [],
      "csv": "https://sizelane.com/data/brands/allbirds-men-2.csv"
    },
    {
      "id": "women",
      "label": "Women's Tree Runner (allbirds.de size chart, with EU)",
      "source": "https://allbirds.de/en/products/w-tree-runner-casual-shoes-960tr3wjbk0026",
      "lengthMeaning": "unstated",
      "lengthScales": {
        "CM": "size"
      },
      "columns": [
        "EU",
        "UK",
        "US",
        "CM"
      ],
      "rows": [
        [
          "35",
          "2 - 2.5",
          "5",
          "22"
        ],
        [
          "36",
          "3 - 3.5",
          "6",
          "23"
        ],
        [
          "37",
          "4 - 4.5",
          "7",
          "24"
        ],
        [
          "38",
          "5 - 5.5",
          "8",
          "25"
        ],
        [
          "39",
          "6 - 6.5",
          "9",
          "26"
        ],
        [
          "40",
          "7 - 7.5",
          "10",
          "27"
        ],
        [
          "41",
          "8 - 8.5",
          "11",
          "28"
        ]
      ],
      "notes": "From the size chart on the allbirds Germany product page; same US/UK/cm values as allbirds.com, plus EU.",
      "corrections": [],
      "lengthAnomalies": [],
      "csv": "https://sizelane.com/data/brands/allbirds-women-2.csv"
    }
  ],
  "modelCharts": [],
  "widths": null,
  "fitGuidance": [
    {
      "text": "The Tree Runner tends to run small; Allbirds recommends sizing up from your usual size.",
      "source": "https://www.allbirds.com/products/mens-tree-runners"
    },
    {
      "text": "Allbirds Germany says most customers take their normal size; with wider feet or for more toe room, go half a size up, or a whole size for even more room.",
      "source": "https://allbirds.de/en/products/m-tree-runner-casual-shoes-960tr3mjbk0026"
    },
    {
      "text": "Allbirds Germany (women's): if you have wide feet or are between two sizes, take one size larger.",
      "source": "https://allbirds.de/en/products/w-tree-runner-casual-shoes-960tr3wjbk0026"
    }
  ],
  "unverified": [
    "Allbirds has no separate size guide page. The charts come from fit guides on individual product pages, so other models may fit differently.",
    "EU sizes are shown only on Allbirds' German site.",
    "No width options or kids' size charts were found."
  ]
}