{
  "entity_type": "unit_conversion_page",
  "id": "kg-per-m3-to-lb-per-ft3",
  "name": "Kilograms per cubic meter to Pounds per cubic foot",
  "title": "Kilograms per cubic meter to Pounds per cubic foot Converter (kg/m³ to lb/ft³)",
  "description": "Convert kilograms per cubic meter to pounds per cubic foot: 1 kg/m³ = 0.062428 lb/ft³. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "density",
  "quantity_name": "Density",
  "base_unit": "kg/m3",
  "from_unit": {
    "symbol": "kg/m3",
    "display": "kg/m³",
    "name": "kilograms per cubic meter",
    "singular": "kilogram per cubic meter"
  },
  "to_unit": {
    "symbol": "lb/ft3",
    "display": "lb/ft³",
    "name": "pounds per cubic foot",
    "singular": "pound per cubic foot"
  },
  "linear": true,
  "factor": 0.06242796058,
  "inverse_factor": 16.01846337,
  "formula": "pounds per cubic foot = kilograms per cubic meter × 0.06242796058",
  "reverse_formula": "kilograms per cubic meter = pounds per cubic foot × 16.01846337",
  "unit_relation": "1 kg/m³ = 0.062428 lb/ft³",
  "examples": [
    {
      "value": 5,
      "result": 0.31214,
      "text": "5 kg/m³ = 0.31214 lb/ft³"
    },
    {
      "value": 12.5,
      "result": 0.78035,
      "text": "12.5 kg/m³ = 0.78035 lb/ft³"
    },
    {
      "value": 100,
      "result": 6.2428,
      "text": "100 kg/m³ = 6.2428 lb/ft³"
    }
  ],
  "table": [
    {
      "kg/m3": 1,
      "lb/ft3": 0.062428
    },
    {
      "kg/m3": 2,
      "lb/ft3": 0.124856
    },
    {
      "kg/m3": 3,
      "lb/ft3": 0.187284
    },
    {
      "kg/m3": 4,
      "lb/ft3": 0.249712
    },
    {
      "kg/m3": 5,
      "lb/ft3": 0.31214
    },
    {
      "kg/m3": 6,
      "lb/ft3": 0.374568
    },
    {
      "kg/m3": 7,
      "lb/ft3": 0.436996
    },
    {
      "kg/m3": 8,
      "lb/ft3": 0.499424
    },
    {
      "kg/m3": 9,
      "lb/ft3": 0.561852
    },
    {
      "kg/m3": 10,
      "lb/ft3": 0.62428
    },
    {
      "kg/m3": 15,
      "lb/ft3": 0.936419
    },
    {
      "kg/m3": 20,
      "lb/ft3": 1.24856
    },
    {
      "kg/m3": 25,
      "lb/ft3": 1.5607
    },
    {
      "kg/m3": 30,
      "lb/ft3": 1.87284
    },
    {
      "kg/m3": 40,
      "lb/ft3": 2.49712
    },
    {
      "kg/m3": 50,
      "lb/ft3": 3.1214
    },
    {
      "kg/m3": 75,
      "lb/ft3": 4.6821
    },
    {
      "kg/m3": 100,
      "lb/ft3": 6.2428
    },
    {
      "kg/m3": 200,
      "lb/ft3": 12.4856
    },
    {
      "kg/m3": 250,
      "lb/ft3": 15.607
    },
    {
      "kg/m3": 500,
      "lb/ft3": 31.214
    },
    {
      "kg/m3": 1000,
      "lb/ft3": 62.428
    }
  ],
  "faq": [
    {
      "q": "How many pounds per cubic foot are in one kilogram per cubic meter?",
      "a": "1 kg/m³ = 0.062428 lb/ft³. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures."
    },
    {
      "q": "What is the formula to convert kilograms per cubic meter to pounds per cubic foot?",
      "a": "Multiply the value in kilograms per cubic meter by 0.06242796058: pounds per cubic foot = kilograms per cubic meter × 0.06242796058. For example, 5 kg/m³ = 0.31214 lb/ft³."
    },
    {
      "q": "How do I convert pounds per cubic foot back to kilograms per cubic meter?",
      "a": "Multiply by the inverse factor 16.01846337 (kilograms per cubic meter = pounds per cubic foot × 16.01846337), or use the pounds per cubic foot-to-kilograms per cubic meter page."
    }
  ],
  "sources": [
    {
      "name": "NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors",
      "url": "https://www.nist.gov/pml/special-publication-811",
      "type": "standard",
      "retrieved_at": "2026-09-24"
    },
    {
      "name": "BIPM – The International System of Units (SI Brochure, 9th edition)",
      "url": "https://www.bipm.org/en/publications/si-brochure",
      "type": "standard",
      "retrieved_at": "2026-09-24"
    },
    {
      "name": "Wikipedia – Conversion of units",
      "url": "https://en.wikipedia.org/wiki/Conversion_of_units",
      "type": "reference",
      "retrieved_at": "2026-09-24"
    }
  ],
  "freshness": {
    "type": "static",
    "max_age_seconds": null,
    "note": "Fixed conversion factors (NIST/BIPM definitions); results never go stale."
  },
  "api": {
    "convert": "https://tttkmbb.com/api/v1/convert?value=5&from_unit=kg%2Fm3&to_unit=lb%2Fft3",
    "calculator": "https://tttkmbb.com/api/v1/calculate/density?value=5&from_unit=kg%2Fm3&to_unit=lb%2Fft3",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "kg/m3",
      "to_unit": "lb/ft3"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/kg-per-m3-to-lb-per-ft3",
    "markdown": "https://tttkmbb.com/conversion/kg-per-m3-to-lb-per-ft3.md",
    "json": "https://tttkmbb.com/conversion/kg-per-m3-to-lb-per-ft3.json",
    "reverse": "https://tttkmbb.com/conversion/lb-per-ft3-to-kg-per-m3",
    "quantity_converter": "https://tttkmbb.com/conversion/density",
    "units": "https://tttkmbb.com/api/v1/units?quantity=density"
  },
  "timestamp": "2026-09-24"
}