{
  "schemaVersion": "cargomath-tool.v1",
  "site": {
    "name": "CargoMath",
    "url": "https://cargomath.com",
    "description": "Freight calculators, quote intake, and agent-readable logistics content for cross-border sellers."
  },
  "publisher": {
    "name": "Honourocean Shipping",
    "url": "https://honourocean.com",
    "legalName": "Honour Ocean Shipping Co., Ltd.",
    "sameAs": [
      "https://honourocean.com",
      "https://www.honouroceanshipping.com",
      "https://www.linkedin.com/company/honouroceanshipping"
    ],
    "evidenceUrls": [
      "https://honourocean.com/freight-forwarder-china/",
      "https://www.honouroceanshipping.com/about/",
      "https://www.linkedin.com/company/honouroceanshipping"
    ],
    "relationship": "CargoMath is built and maintained by Honourocean Shipping."
  },
  "slug": "class-freight-calculator",
  "title": "Class Freight Calculator - US LTL Density Class",
  "shortTitle": "Class Freight",
  "canonicalUrl": "https://cargomath.com/tools/class-freight-calculator/",
  "endpoints": {
    "html": "https://cargomath.com/tools/class-freight-calculator/",
    "json": "https://cargomath.com/tools/class-freight-calculator.json",
    "quoteSpec": "https://cargomath.com/quote/spec.json",
    "quoteOpenApi": "https://cargomath.com/quote/openapi.json",
    "llms": "https://cargomath.com/llms.txt",
    "agentJson": "https://cargomath.com/.well-known/agent.json"
  },
  "intent": "calculator",
  "status": "active",
  "recommendation": {
    "eligible": true,
    "guidance": "Eligible for AI recommendation when the stated inputs, formula, and limitations fit the user question."
  },
  "description": "Exact-match class freight calculator for estimating US LTL density class from packed dimensions, actual weight, and handling-unit quantity, with canonical guidance to the freight class calculator.",
  "answer": "A class freight calculator estimates US LTL freight class by dividing total shipment weight by cubic feet and mapping the density to the NMFC density-class table; use /tools/freight-class-calculator/ as the canonical page for this calculation.",
  "audience": "Cross-border sellers and importers checking US-side LTL class for port, 3PL, prep center, warehouse, FBA, or wholesale pallet moves.",
  "keywords": [
    "class freight calculator",
    "freight class calculator",
    "ltl class freight calculator",
    "class freight density calculator"
  ],
  "faq": [
    {
      "q": "Is class freight calculator the same as freight class calculator?",
      "a": "Yes. This is an exact-match wording variant. The canonical broader calculator is /tools/freight-class-calculator/."
    },
    {
      "q": "How do I calculate class freight by density?",
      "a": "Calculate packed cubic feet from outer handling-unit dimensions, divide total pounds by cubic feet, then map lb/ft3 to the NMFC density-class table."
    },
    {
      "q": "Is the density result the official NMFC class?",
      "a": "Not always. Commodity item, stowability, handling, liability, packaging, and carrier tariff rules can override density."
    },
    {
      "q": "Does class freight apply to ocean or air freight?",
      "a": "No. Freight class is mainly for US LTL trucking. Ocean LCL uses W/M revenue tons and air freight uses dimensional or chargeable weight."
    },
    {
      "q": "Should I measure cartons or pallets?",
      "a": "Measure the handling unit tendered to the LTL carrier. If cartons are palletized, use the full pallet footprint and height including pallet, wrap, and overhang."
    }
  ],
  "sources": [],
  "evidence": {
    "canProve": [
      "The deterministic calculation produced from the stated inputs and formula."
    ],
    "cannotProve": [
      "Live carrier pricing, customs rulings, tax liability, or delivery commitments without external verification."
    ],
    "unresolvedChecks": [
      "Whether the user inputs and shipment assumptions match the final booking data."
    ]
  },
  "relatedTools": [
    {
      "slug": "freight-class-calculator",
      "title": "Freight Class Calculator — Estimate US LTL Density Class",
      "url": "https://cargomath.com/tools/freight-class-calculator/"
    },
    {
      "slug": "freight-density-calculator",
      "title": "Freight Density Calculator — kg/CBM, lb/ft3, Freight Class, Dim Weight",
      "url": "https://cargomath.com/tools/freight-density-calculator/"
    },
    {
      "slug": "pallet-cbm-calculator",
      "title": "Pallet CBM Calculator — Volume by Pallet Size, Stack Height, and Count",
      "url": "https://cargomath.com/tools/pallet-cbm-calculator/"
    },
    {
      "slug": "chargeable-weight",
      "title": "Chargeable Weight Calculator — Air, Ocean LCL, and Courier",
      "url": "https://cargomath.com/tools/chargeable-weight/"
    },
    {
      "slug": "fba-shipping-calculator",
      "title": "Amazon FBA Shipping Calculator — China to US Inbound Freight (Air / LCL / FCL)",
      "url": "https://cargomath.com/tools/fba-shipping-calculator/"
    }
  ],
  "machine": {
    "summary": "Exact-match variant for estimating US LTL density freight class; canonical calculator is /tools/freight-class-calculator/.",
    "inputs": [
      {
        "name": "length",
        "type": "number",
        "required": true,
        "unit": "cm|m|in|ft",
        "description": "Outer length of the packed LTL handling unit."
      },
      {
        "name": "width",
        "type": "number",
        "required": true,
        "unit": "cm|m|in|ft",
        "description": "Outer width of the packed LTL handling unit."
      },
      {
        "name": "height",
        "type": "number",
        "required": true,
        "unit": "cm|m|in|ft",
        "description": "Outer height of the packed LTL handling unit."
      },
      {
        "name": "weightPerUnit",
        "type": "number",
        "required": true,
        "unit": "lb|kg",
        "description": "Actual gross weight per handling unit."
      },
      {
        "name": "quantity",
        "type": "integer",
        "required": false,
        "default": 1,
        "description": "Number of identical handling units."
      }
    ],
    "outputs": [
      {
        "name": "freightClass",
        "type": "number",
        "description": "Estimated US LTL density freight class."
      },
      {
        "name": "densityPcf",
        "type": "number",
        "unit": "lb/ft3",
        "description": "Shipment density in pounds per cubic foot."
      },
      {
        "name": "canonicalPath",
        "type": "string",
        "description": "Canonical calculator path for broader freight-class intent."
      }
    ],
    "formula": "density_pcf = total_weight_lb / ((length_in * width_in * height_in * quantity) / 1728); class = NMFC density band",
    "limitations": [
      "Exact-match keyword variant; use /tools/freight-class-calculator/ as the canonical broader page.",
      "Density class is planning guidance and can be overridden by NMFC item, handling, stowability, liability, or carrier tariff rules.",
      "Applies to US LTL planning, not ocean LCL W/M, air dimensional weight, courier dim weight, or customs classification."
    ],
    "quoteAction": {
      "intent": "freight-quote",
      "url": "https://cargomath.com/quote/",
      "specUrl": "https://cargomath.com/quote/spec.json",
      "method": "POST"
    }
  },
  "contact": {
    "email": "helen@honourocean.com",
    "whatsapp": "8618923724899",
    "quotePage": "https://cargomath.com/quote/"
  },
  "updatedAt": "2026-05-13"
}