{
  "entity_type": "unit_conversion_page",
  "id": "lb-per-in3-to-g-per-cm3",
  "name": "Pounds per cubic inch to Grams per cubic centimeter",
  "title": "Pounds per cubic inch to Grams per cubic centimeter Converter (lb/in³ to g/cm³)",
  "description": "Convert pounds per cubic inch to grams per cubic centimeter: 1 lb/in³ = 27.6799 g/cm³. 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": "lb/in3",
    "display": "lb/in³",
    "name": "pounds per cubic inch",
    "singular": "pound per cubic inch"
  },
  "to_unit": {
    "symbol": "g/cm3",
    "display": "g/cm³",
    "name": "grams per cubic centimeter",
    "singular": "gram per cubic centimeter"
  },
  "linear": true,
  "factor": 27.67990471,
  "inverse_factor": 0.036127292,
  "formula": "grams per cubic centimeter = pounds per cubic inch × 27.67990471",
  "reverse_formula": "pounds per cubic inch = grams per cubic centimeter × 0.036127292",
  "unit_relation": "1 lb/in³ = 27.6799 g/cm³",
  "examples": [
    {
      "value": 5,
      "result": 138.4,
      "text": "5 lb/in³ = 138.4 g/cm³"
    },
    {
      "value": 12.5,
      "result": 345.999,
      "text": "12.5 lb/in³ = 345.999 g/cm³"
    },
    {
      "value": 100,
      "result": 2767.99,
      "text": "100 lb/in³ = 2767.99 g/cm³"
    }
  ],
  "table": [
    {
      "lb/in3": 1,
      "g/cm3": 27.6799
    },
    {
      "lb/in3": 2,
      "g/cm3": 55.3598
    },
    {
      "lb/in3": 3,
      "g/cm3": 83.0397
    },
    {
      "lb/in3": 4,
      "g/cm3": 110.72
    },
    {
      "lb/in3": 5,
      "g/cm3": 138.4
    },
    {
      "lb/in3": 6,
      "g/cm3": 166.079
    },
    {
      "lb/in3": 7,
      "g/cm3": 193.759
    },
    {
      "lb/in3": 8,
      "g/cm3": 221.439
    },
    {
      "lb/in3": 9,
      "g/cm3": 249.119
    },
    {
      "lb/in3": 10,
      "g/cm3": 276.799
    },
    {
      "lb/in3": 15,
      "g/cm3": 415.199
    },
    {
      "lb/in3": 20,
      "g/cm3": 553.598
    },
    {
      "lb/in3": 25,
      "g/cm3": 691.998
    },
    {
      "lb/in3": 30,
      "g/cm3": 830.397
    },
    {
      "lb/in3": 40,
      "g/cm3": 1107.2
    },
    {
      "lb/in3": 50,
      "g/cm3": 1384
    },
    {
      "lb/in3": 75,
      "g/cm3": 2075.99
    },
    {
      "lb/in3": 100,
      "g/cm3": 2767.99
    },
    {
      "lb/in3": 200,
      "g/cm3": 5535.98
    },
    {
      "lb/in3": 250,
      "g/cm3": 6919.98
    },
    {
      "lb/in3": 500,
      "g/cm3": 13840
    },
    {
      "lb/in3": 1000,
      "g/cm3": 27679.9
    }
  ],
  "faq": [
    {
      "q": "How many grams per cubic centimeter are in one pound per cubic inch?",
      "a": "1 lb/in³ = 27.6799 g/cm³. 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 pounds per cubic inch to grams per cubic centimeter?",
      "a": "Multiply the value in pounds per cubic inch by 27.67990471: grams per cubic centimeter = pounds per cubic inch × 27.67990471. For example, 5 lb/in³ = 138.4 g/cm³."
    },
    {
      "q": "How do I convert grams per cubic centimeter back to pounds per cubic inch?",
      "a": "Multiply by the inverse factor 0.036127292 (pounds per cubic inch = grams per cubic centimeter × 0.036127292), or use the grams per cubic centimeter-to-pounds per cubic inch 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=lb%2Fin3&to_unit=g%2Fcm3",
    "calculator": "https://tttkmbb.com/api/v1/calculate/density?value=5&from_unit=lb%2Fin3&to_unit=g%2Fcm3",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "lb/in3",
      "to_unit": "g/cm3"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/lb-per-in3-to-g-per-cm3",
    "markdown": "https://tttkmbb.com/conversion/lb-per-in3-to-g-per-cm3.md",
    "json": "https://tttkmbb.com/conversion/lb-per-in3-to-g-per-cm3.json",
    "reverse": "https://tttkmbb.com/conversion/g-per-cm3-to-lb-per-in3",
    "quantity_converter": "https://tttkmbb.com/conversion/density",
    "units": "https://tttkmbb.com/api/v1/units?quantity=density"
  },
  "timestamp": "2026-09-24"
}