{
  "entity_type": "unit_conversion_page",
  "id": "oz-to-kg",
  "name": "Ounces to Kilograms",
  "title": "Ounces to Kilograms Converter (oz to kg)",
  "description": "Convert ounces to kilograms: 1 oz = 0.0283495 kg. 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": "kg",
    "display": "kg",
    "name": "kilograms",
    "singular": "kilogram"
  },
  "linear": true,
  "factor": 0.02834952313,
  "inverse_factor": 35.27396195,
  "formula": "kilograms = ounces × 0.02834952313",
  "reverse_formula": "ounces = kilograms × 35.27396195",
  "unit_relation": "1 oz = 0.0283495 kg",
  "examples": [
    {
      "value": 5,
      "result": 0.141748,
      "text": "5 oz = 0.141748 kg"
    },
    {
      "value": 12.5,
      "result": 0.354369,
      "text": "12.5 oz = 0.354369 kg"
    },
    {
      "value": 100,
      "result": 2.83495,
      "text": "100 oz = 2.83495 kg"
    }
  ],
  "table": [
    {
      "oz": 1,
      "kg": 0.0283495
    },
    {
      "oz": 2,
      "kg": 0.056699
    },
    {
      "oz": 3,
      "kg": 0.0850486
    },
    {
      "oz": 4,
      "kg": 0.113398
    },
    {
      "oz": 5,
      "kg": 0.141748
    },
    {
      "oz": 6,
      "kg": 0.170097
    },
    {
      "oz": 7,
      "kg": 0.198447
    },
    {
      "oz": 8,
      "kg": 0.226796
    },
    {
      "oz": 9,
      "kg": 0.255146
    },
    {
      "oz": 10,
      "kg": 0.283495
    },
    {
      "oz": 15,
      "kg": 0.425243
    },
    {
      "oz": 20,
      "kg": 0.56699
    },
    {
      "oz": 25,
      "kg": 0.708738
    },
    {
      "oz": 30,
      "kg": 0.850486
    },
    {
      "oz": 40,
      "kg": 1.13398
    },
    {
      "oz": 50,
      "kg": 1.41748
    },
    {
      "oz": 75,
      "kg": 2.12621
    },
    {
      "oz": 100,
      "kg": 2.83495
    },
    {
      "oz": 200,
      "kg": 5.6699
    },
    {
      "oz": 250,
      "kg": 7.08738
    },
    {
      "oz": 500,
      "kg": 14.1748
    },
    {
      "oz": 1000,
      "kg": 28.3495
    }
  ],
  "faq": [
    {
      "q": "How many kilograms are in one ounce?",
      "a": "1 oz = 0.0283495 kg. 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 kilograms?",
      "a": "Multiply the value in ounces by 0.02834952313: kilograms = ounces × 0.02834952313. For example, 5 oz = 0.141748 kg."
    },
    {
      "q": "How do I convert kilograms back to ounces?",
      "a": "Multiply by the inverse factor 35.27396195 (ounces = kilograms × 35.27396195), or use the kilograms-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=kg",
    "calculator": "https://tttkmbb.com/api/v1/calculate/mass?value=5&from_unit=oz&to_unit=kg",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "oz",
      "to_unit": "kg"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/oz-to-kg",
    "markdown": "https://tttkmbb.com/conversion/oz-to-kg.md",
    "json": "https://tttkmbb.com/conversion/oz-to-kg.json",
    "reverse": "https://tttkmbb.com/conversion/kg-to-oz",
    "quantity_converter": "https://tttkmbb.com/conversion/mass",
    "units": "https://tttkmbb.com/api/v1/units?quantity=mass"
  },
  "timestamp": "2026-09-24"
}