{
  "id": "lbs-and-oz-to-kg",
  "version": "3a5a94ec4907",
  "status": "published",
  "name": "Lbs and Oz to Kg Converter",
  "question": "How do I convert lbs and oz to kg?",
  "summary": "Converts pounds and ounces to kilograms: kg = (lb × 16 + oz) × 0.028349523125.",
  "category": "convert",
  "subcategory": "weight",
  "url": "https://www.acalculator.org/convert/lbs-and-oz-to-kg",
  "markdown": "https://www.acalculator.org/convert/lbs-and-oz-to-kg.md",
  "kind": "formulas",
  "method": "kg = (lb × 16 + oz) × 0.028349523125",
  "assumptions": [
    "1 lb = 16 oz = 0.45359237 kg exactly, so 1 oz = 0.028349523125 kg (NIST SP 811). Ounces may be 16 or more.",
    "Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up."
  ],
  "inputs": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "value": {
        "title": "Pounds (lb)",
        "description": "The whole pounds.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000000000
      },
      "oz": {
        "title": "Ounces (oz)",
        "description": "The ounces on top of the pounds.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000000000
      },
      "result": {
        "title": "Kilograms (kg)",
        "description": "The weight in kilograms.",
        "type": "number",
        "minimum": 0,
        "maximum": 453592370000
      }
    }
  },
  "solve": {
    "fillAny": 2,
    "variables": [
      "value",
      "oz",
      "result"
    ],
    "inputsOnly": []
  },
  "outputs": {
    "value": {
      "label": "Pounds (lb)",
      "description": "The whole pounds.",
      "format": "number"
    },
    "oz": {
      "label": "Ounces (oz)",
      "description": "The ounces on top of the pounds.",
      "format": "number"
    },
    "result": {
      "label": "Kilograms (kg)",
      "description": "The weight in kilograms.",
      "format": "number"
    }
  },
  "defaultAnswer": {
    "inputs": {
      "value": 7,
      "oz": 8
    },
    "outputs": {
      "result": 3.401942775
    },
    "text": "7 lb 8 oz = 3.401943 kg."
  },
  "examples": [
    {
      "given": {
        "value": 7,
        "oz": 8
      },
      "expect": {
        "result": 3.401942775
      },
      "source": "NIST SP 811 (2008), Appendix B.8: 1 lb = 0.45359237 kg, 1 oz = 1/16 lb"
    },
    {
      "given": {
        "value": 1,
        "oz": 0
      },
      "expect": {
        "result": 0.45359237
      },
      "source": "NIST SP 811 (2008), Appendix B.8: 1 lb = 0.45359237 kg, 1 oz = 1/16 lb"
    },
    {
      "given": {
        "value": 0,
        "oz": 16
      },
      "expect": {
        "result": 0.45359237
      },
      "source": "NIST SP 811 (2008), Appendix B.8: 1 lb = 0.45359237 kg, 1 oz = 1/16 lb"
    }
  ],
  "sources": [
    "NIST SP 811 (2008), Guide for the Use of the International System of Units, Table 5 (SI prefixes) and Appendix B.8 (factors for units listed alphabetically), retrieved 2026-10-05. https://www.nist.gov/pml/special-publication-811"
  ],
  "related": [
    "kg-to-lbs-and-oz",
    "lbs-to-kg",
    "oz-to-kg"
  ],
  "changelog": []
}