{
    "name": "Packaging Dimensional Weight Calculator",
    "url": "https://calculators.geekmidst.com/calculators/packaging-dimensional-weight-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/packaging-dimensional-weight-calculator.md",
    "category": "Manufacturing & packaging",
    "description": "Work out a parcel’s dimensional (volumetric) weight with your carrier’s divisor and compare it with the actual weight to find the chargeable weight.",
    "summary": "Carriers charge for space as well as weight. Dimensional weight is length × width × height divided by the carrier’s divisor, and you pay for whichever is higher, that or the actual weight.",
    "also_called": [
        "Volumetric weight calculator",
        "DIM weight calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "unit",
            "label": "Units",
            "type": "segmented",
            "default": "cm",
            "options": {
                "cm": "cm and kg",
                "in": "inches and lb"
            }
        },
        {
            "name": "length",
            "label": "Length",
            "type": "number",
            "default": "40"
        },
        {
            "name": "width",
            "label": "Width",
            "type": "number",
            "default": "30"
        },
        {
            "name": "height",
            "label": "Height",
            "type": "number",
            "default": "25"
        },
        {
            "name": "divisor",
            "label": "Carrier’s dimensional divisor",
            "type": "number",
            "default": "5000"
        },
        {
            "name": "actual",
            "label": "Actual weight",
            "type": "number",
            "default": "4.5"
        }
    ],
    "outputs": [
        {
            "key": "chargeable",
            "label": "Chargeable weight",
            "format": "number"
        },
        {
            "key": "dim_weight",
            "label": "Dimensional weight",
            "format": "number"
        },
        {
            "key": "basis",
            "label": "Charged on",
            "format": "text"
        },
        {
            "key": "volume",
            "label": "Volume (m³ for cm, ft³ for inches)",
            "format": "number"
        }
    ],
    "formula": {
        "text": "Dimensional weight = L × W × H ÷ Divisor;  Chargeable weight = max(Dimensional, Actual)",
        "variables": {
            "L, W, H": "outside dimensions of the parcel",
            "Divisor": "set by the carrier, in cm³/kg or in³/lb"
        }
    },
    "worked_example": {
        "inputs": {
            "unit": "cm",
            "length": "40",
            "width": "30",
            "height": "25",
            "divisor": "5000",
            "actual": "4.5"
        },
        "steps": [
            "Volume = 40 × 30 × 25 = 30,000 cm³.",
            "Dimensional weight = 30,000 ÷ 5000 = 6 kg.",
            "Chargeable = the higher of 6 kg and 4.5 kg = 6 kg."
        ],
        "result": "The parcel is billed at 6 kg, its dimensional weight, not its 4.5 kg actual weight."
    },
    "interpretation": "If dimensional weight wins, a smaller box or less void fill saves money. Right-sizing the carton is often cheaper than lighter packaging.",
    "assumptions": [
        "Dimensions are the outside measurements of the packed parcel."
    ],
    "limitations": [
        "Carriers usually round dimensions and weights up (for example to the next whole cm or 0.5 kg), and some apply different rules above size limits. Apply your carrier’s rounding rules."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Why do divisors differ?",
            "answer": "Each carrier sets its own density threshold. A smaller divisor gives a higher dimensional weight, so compare like with like."
        },
        {
            "question": "Do I measure the bulges?",
            "answer": "Yes. Measure the longest point on each side, including any bulge, as carriers do."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Corrugated Box Volume Calculator",
            "url": "https://calculators.geekmidst.com/calculators/corrugated-box-volume-calculator"
        },
        {
            "name": "Case Pack Optimization Calculator",
            "url": "https://calculators.geekmidst.com/calculators/case-pack-calculator"
        },
        {
            "name": "Pallet Fit Calculator",
            "url": "https://calculators.geekmidst.com/calculators/pallet-fit-calculator"
        },
        {
            "name": "Air Freight Chargeable Weight Calculator",
            "url": "https://calculators.geekmidst.com/calculators/air-freight-chargeable-weight-calculator"
        },
        {
            "name": "Shipping Chargeable Weight Calculator",
            "url": "https://calculators.geekmidst.com/calculators/shipping-chargeable-weight-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}