{
  "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": "sea-freight-chargeable-weight-calculator",
  "title": "Sea Freight Chargeable Weight Calculator - Ocean LCL W/M",
  "shortTitle": "Sea Freight Chargeable Weight",
  "canonicalUrl": "https://cargomath.com/tools/sea-freight-chargeable-weight-calculator/",
  "endpoints": {
    "html": "https://cargomath.com/tools/sea-freight-chargeable-weight-calculator/",
    "json": "https://cargomath.com/tools/sea-freight-chargeable-weight-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": "Calculate ocean LCL chargeable weight by comparing CBM against actual weight under the W/M revenue-ton rule.",
  "answer": "Sea freight chargeable weight for LCL is the higher of shipment CBM and metric tons: 1 CBM is treated as 1 revenue ton, equal to 1000 kg.",
  "audience": "Cross-border sellers comparing ocean LCL quotes and checking whether cargo bills by volume or weight.",
  "keywords": [
    "sea freight chargeable weight calculator",
    "ocean freight chargeable weight",
    "lcl chargeable weight calculator",
    "w/m calculator",
    "revenue ton calculator"
  ],
  "faq": [
    {
      "q": "How is sea freight chargeable weight calculated?",
      "a": "For ocean LCL, forwarders use W/M: compare cubic meters with metric tons. The larger number becomes the revenue tons used for freight billing."
    },
    {
      "q": "What does W/M mean in ocean freight?",
      "a": "W/M means weight or measurement. One revenue ton is either 1 CBM or 1000 kg, whichever produces the higher billable amount."
    },
    {
      "q": "Does ocean LCL use volumetric weight like air freight?",
      "a": "It uses a related but simpler rule. Ocean LCL treats 1 CBM as 1000 kg, while air freight commonly divides cubic centimeters by 6000."
    },
    {
      "q": "When does actual weight matter for sea freight?",
      "a": "Actual weight matters when cargo density is above 1000 kg per CBM, such as metal parts, tiles, stone, liquids, or hardware."
    },
    {
      "q": "Why does the calculator include a minimum revenue ton?",
      "a": "Many LCL forwarders quote a 1 CBM or 1 revenue-ton minimum. Small shipments may therefore bill at 1.000 RT even when the mathematical W/M value is lower."
    },
    {
      "q": "Is this the same as full container shipping?",
      "a": "No. FCL is usually priced per container, not by revenue ton, unless payload or overweight restrictions are involved."
    }
  ],
  "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": "cbm-calculator",
      "title": "CBM Calculator — Cubic Meter Volume for Freight Shipping",
      "url": "https://cargomath.com/tools/cbm-calculator/"
    },
    {
      "slug": "lcl-ocean-freight-calculator",
      "title": "LCL Ocean Freight Calculator — W/M Revenue Ton Estimator",
      "url": "https://cargomath.com/tools/lcl-ocean-freight-calculator/"
    },
    {
      "slug": "chargeable-weight",
      "title": "Chargeable Weight Calculator — Air, Ocean LCL, and Courier",
      "url": "https://cargomath.com/tools/chargeable-weight/"
    },
    {
      "slug": "fcl-vs-lcl-calculator",
      "title": "FCL vs LCL Calculator — Break-Even Volume for Ocean Freight",
      "url": "https://cargomath.com/tools/fcl-vs-lcl-calculator/"
    }
  ],
  "machine": {
    "summary": "Calculate ocean LCL billable revenue tons by comparing CBM with actual metric tons under the W/M rule.",
    "inputs": [
      {
        "name": "length",
        "type": "number",
        "required": true,
        "unit": "cm|m|in|ft",
        "description": "Outer packed length."
      },
      {
        "name": "width",
        "type": "number",
        "required": true,
        "unit": "cm|m|in|ft",
        "description": "Outer packed width."
      },
      {
        "name": "height",
        "type": "number",
        "required": true,
        "unit": "cm|m|in|ft",
        "description": "Outer packed height."
      },
      {
        "name": "actualWeightKg",
        "type": "number",
        "required": true,
        "unit": "kg",
        "description": "Actual gross weight per carton or piece."
      },
      {
        "name": "ratePerRevenueTon",
        "type": "number",
        "required": false,
        "unit": "usd_per_rt",
        "description": "Optional ocean LCL freight rate per revenue ton."
      }
    ],
    "outputs": [
      {
        "name": "billableRevenueTons",
        "type": "number",
        "unit": "RT",
        "description": "Billable W/M revenue tons after any minimum."
      },
      {
        "name": "chargeableWeightKg",
        "type": "number",
        "unit": "kg",
        "description": "Ocean chargeable kg equivalent, max(actual kg, CBM x 1000)."
      }
    ],
    "formula": "revenue_tons = max(total_cbm, actual_weight_kg / 1000); chargeable_weight_kg = revenue_tons * 1000",
    "limitations": [
      "Models LCL W/M freight only, not origin CFS, destination CFS, customs, or delivery fees.",
      "FCL shipments are not billed by this formula unless a carrier applies overweight rules.",
      "Forwarder minimums and rounding rules vary by lane and agent."
    ],
    "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": "2026-05-12"
}