{ "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/on-size-chart", "brand": "On", "slug": "on", "category": "running", "origin": "CH", "checked": "2026-10-24", "officialLinks": { "website": "https://www.on.com/en-us/", "sizeGuide": "https://www.on.com/en-us/faq/product-advice-sizing-stock", "help": "https://www.on.com/en-us/faq/product-advice-sizing-stock", "apps": { "ios": "https://apps.apple.com/us/app/on-shop-shoes-apparel/id6449706677", "android": "https://play.google.com/store/apps/details?id=com.on_running.on_app" }, "collections": [ { "label": "Road Running", "url": "https://www.on.com/en-us/shop/shoes/road-running" }, { "label": "Trail Running", "url": "https://www.on.com/en-us/shop/shoes/trail-running" }, { "label": "Hiking", "url": "https://www.on.com/en-us/shop/shoes/hiking" }, { "label": "Tennis", "url": "https://www.on.com/en-us/shop/shoes/tennis" }, { "label": "Kids", "url": "https://www.on.com/en-us/shop/kids/shoes" } ], "regional": [ { "market": "UK", "url": "https://www.on.com/en-gb/" }, { "market": "Canada", "url": "https://www.on.com/en-ca/" }, { "market": "Switzerland", "url": "https://www.on.com/de-ch/" }, { "market": "Germany", "url": "https://www.on.com/de-de/" }, { "market": "France", "url": "https://www.on.com/fr-fr/" }, { "market": "Italy", "url": "https://www.on.com/it-it/" }, { "market": "Spain", "url": "https://www.on.com/es-es/" }, { "market": "Netherlands", "url": "https://www.on.com/en-nl/" }, { "market": "Japan", "url": "https://www.on.com/ja-jp/" }, { "market": "South Korea", "url": "https://www.on.com/ko-kr/" }, { "market": "Australia", "url": "https://www.on.com/en-au/" } ] }, "sizeCharts": [ { "id": "men", "label": "Men's shoes", "source": "https://www.on.com/en-us/products/cloudmonster-3-m-3mg1005/mens/black-black-shoes-3MG10051043", "lengthMeaning": "unstated", "lengthScales": { "JP": "size" }, "columns": [ "US", "UK", "EU", "JP", "MX" ], "rows": [ [ "7", "6.5", "40", "25", "25" ], [ "7.5", "7", "40.5", "25.5", "25.5" ], [ "8", "7.5", "41", "26", "26" ], [ "8.5", "8", "42", "26.5", "26.5" ], [ "9", "8.5", "42.5", "27", "27" ], [ "9.5", "9", "43", "27.5", "27.5" ], [ "10", "9.5", "44", "28", "28" ], [ "10.5", "10", "44.5", "28.5", "28.5" ], [ "11", "10.5", "45", "29", "29" ], [ "11.5", "11", "46", "29.5", "29.5" ], [ "12", "11.5", "47", "30", "30" ], [ "12.5", "12", "47.5", "30.5", "30.5" ], [ "13", "12.5", "48", "31", "31" ], [ "13.5", "13", "48.5", "31.5", "31.5" ], [ "14", "13.5", "49", "32", "32" ], [ "15", "14.5", "50", "33", "33" ] ], "notes": "From the 'Size Guide - Mens Shoes' table in the Size chart panel of a product page (Cloudmonster 3); On has no stand-alone size-chart page and the size range shown follows the model. Transposed from the brand's horizontal layout. The brand's table also has a BR (Brazil) row, left out because the schema has no BR column.", "corrections": [], "lengthAnomalies": [], "csv": "https://sizelane.com/data/brands/on-men.csv" }, { "id": "women", "label": "Women's shoes", "source": "https://www.on.com/en-us/products/cloudrunner-3-w-3wg1005/womens/agave-mistletoe-shoes-3WG10055419", "lengthMeaning": "unstated", "lengthScales": { "JP": "size" }, "columns": [ "US", "UK", "EU", "JP", "MX" ], "rows": [ [ "5", "3", "36", "22", "22" ], [ "5.5", "3.5", "36.5", "22.5", "22.5" ], [ "6", "4", "37", "23", "23" ], [ "6.5", "4.5", "37.5", "23.5", "23.5" ], [ "7", "5", "38", "24", "24" ], [ "7.5", "5.5", "38.5", "24.5", "24.5" ], [ "8", "6", "39", "25", "25" ], [ "8.5", "6.5", "40", "25.5", "25.5" ], [ "9", "7", "40.5", "26", "26" ], [ "9.5", "7.5", "41", "26.5", "26.5" ], [ "10", "8", "42", "27", "27" ], [ "10.5", "8.5", "42.5", "27.5", "27.5" ], [ "11", "9", "43", "28", "28" ], [ "12", "10", "44", "29", "29" ] ], "notes": "From the 'Size Guide - Womens Shoes' table on a product page (Cloudrunner 3); size range follows the model. Transposed. The brand's table also has a BR (Brazil) row, left out because the schema has no BR column.", "corrections": [], "lengthAnomalies": [], "csv": "https://sizelane.com/data/brands/on-women.csv" }, { "id": "kids", "label": "Kids' shoes", "source": "https://www.on.com/en-us/products/cloud-play-3KD1143/unisex", "lengthMeaning": "foot", "lengthScales": { "CM": "size", "JP": "size" }, "columns": [ "US", "UK", "EU", "JP", "MX", "CM" ], "rows": [ [ "10.5", "10", "27.5", "16.7", "16.7", "16.7" ], [ "11", "10.5", "28.5", "17.1", "17.1", "17.1" ], [ "11.5", "11", "29", "17.6", "17.6", "17.6" ], [ "12", "11.5", "29.5", "18", "18", "18" ], [ "12.5", "12", "30", "18.4", "18.4", "18.4" ], [ "13", "12.5", "31", "18.8", "18.8", "18.8" ], [ "13.5", "13", "31.5", "19.2", "19.2", "19.2" ], [ "1", "13.5", "32", "19.7", "19.7", "19.7" ], [ "1.5", "1", "33", "20.1", "20.1", "20.1" ], [ "2", "1.5", "33.5", "20.5", "20.5", "20.5" ], [ "2.5", "2", "34", "20.9", "20.9", "20.9" ], [ "3", "2.5", "35", "21.4", "21.4", "21.4" ] ], "notes": "From the 'Size Guide - Kids Shoes' table on the Cloud Play product page with the Centimeters option selected; the page says to measure the longest foot and match it in this guide, so CM is foot length. Transposed. The brand's table also has a BR (Brazil) row, left out because the schema has no BR column.", "corrections": [], "lengthAnomalies": [], "csv": "https://sizelane.com/data/brands/on-kids.csv" } ], "modelCharts": [], "widths": null, "fitGuidance": [ { "text": "JP sizes are in centimetres: measure your bare foot against a wall and add about 1 cm for an indication of size.", "source": "https://www.on.com/en-us/faq/product-advice-sizing-stock" }, { "text": "Women's sizes are 1.5 sizes larger than men's (men's US 7 = women's US 8.5); men's shoes are built wider.", "source": "https://www.on.com/en-us/faq/product-advice-sizing-stock" }, { "text": "Running shoes should be at least half a size bigger than your street shoe, with some room in the toebox.", "source": "https://www.on.com/en-us/faq/product-advice-sizing-stock" }, { "text": "Some models come in wide fits, found with the 'Wide Fit' filter (not in every country).", "source": "https://www.on.com/en-us/faq/product-advice-sizing-stock" }, { "text": "For kids, measure the longer foot and size up if unsure.", "source": "https://www.on.com/en-us/products/cloud-play-3KD1143/unisex" } ], "unverified": [ "On has no separate size chart page; its FAQ says each product page has the chart. The charts here come from one product page per group, so other models may list a different size range.", "The adult charts have no foot-length column; the JP and MX values are size labels in centimetres, not stated as foot length.", "On publishes no width letter codes; some models are simply marked as wide fit." ] }