{
  "entity_type": "unit_conversion_page",
  "id": "oz-to-lbs",
  "name": "Ounces to Pounds",
  "title": "Ounces to Pounds Converter (oz to lb)",
  "description": "Convert ounces to pounds: 1 oz = 0.0625 lb. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "mass",
  "quantity_name": "Mass",
  "base_unit": "kg",
  "from_unit": {
    "symbol": "oz",
    "display": "oz",
    "name": "ounces",
    "singular": "ounce"
  },
  "to_unit": {
    "symbol": "lb",
    "display": "lb",
    "name": "pounds",
    "singular": "pound"
  },
  "linear": true,
  "factor": 0.0625,
  "inverse_factor": 16,
  "formula": "pounds = ounces × 0.0625",
  "reverse_formula": "ounces = pounds × 16",
  "unit_relation": "1 oz = 0.0625 lb",
  "examples": [
    {
      "value": 5,
      "result": 0.3125,
      "text": "5 oz = 0.3125 lb"
    },
    {
      "value": 12.5,
      "result": 0.78125,
      "text": "12.5 oz = 0.78125 lb"
    },
    {
      "value": 100,
      "result": 6.25,
      "text": "100 oz = 6.25 lb"
    }
  ],
  "table": [
    {
      "oz": 1,
      "lb": 0.0625
    },
    {
      "oz": 2,
      "lb": 0.125
    },
    {
      "oz": 3,
      "lb": 0.1875
    },
    {
      "oz": 4,
      "lb": 0.25
    },
    {
      "oz": 5,
      "lb": 0.3125
    },
    {
      "oz": 6,
      "lb": 0.375
    },
    {
      "oz": 7,
      "lb": 0.4375
    },
    {
      "oz": 8,
      "lb": 0.5
    },
    {
      "oz": 9,
      "lb": 0.5625
    },
    {
      "oz": 10,
      "lb": 0.625
    },
    {
      "oz": 15,
      "lb": 0.9375
    },
    {
      "oz": 20,
      "lb": 1.25
    },
    {
      "oz": 25,
      "lb": 1.5625
    },
    {
      "oz": 30,
      "lb": 1.875
    },
    {
      "oz": 40,
      "lb": 2.5
    },
    {
      "oz": 50,
      "lb": 3.125
    },
    {
      "oz": 75,
      "lb": 4.6875
    },
    {
      "oz": 100,
      "lb": 6.25
    },
    {
      "oz": 200,
      "lb": 12.5
    },
    {
      "oz": 250,
      "lb": 15.625
    },
    {
      "oz": 500,
      "lb": 31.25
    },
    {
      "oz": 1000,
      "lb": 62.5
    }
  ],
  "faq": [
    {
      "q": "How many pounds are in one ounce?",
      "a": "1 oz = 0.0625 lb. 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 ounces to pounds?",
      "a": "Multiply the value in ounces by 0.0625: pounds = ounces × 0.0625. For example, 5 oz = 0.3125 lb."
    },
    {
      "q": "How do I convert pounds back to ounces?",
      "a": "Multiply by the inverse factor 16 (ounces = pounds × 16), or use the pounds-to-ounces 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=oz&to_unit=lb",
    "calculator": "https://tttkmbb.com/api/v1/calculate/mass?value=5&from_unit=oz&to_unit=lb",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "oz",
      "to_unit": "lb"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/oz-to-lbs",
    "markdown": "https://tttkmbb.com/conversion/oz-to-lbs.md",
    "json": "https://tttkmbb.com/conversion/oz-to-lbs.json",
    "reverse": "https://tttkmbb.com/conversion/lbs-to-oz",
    "quantity_converter": "https://tttkmbb.com/conversion/mass",
    "units": "https://tttkmbb.com/api/v1/units?quantity=mass"
  },
  "timestamp": "2026-09-24"
}