{
  "id": "ml-to-kg",
  "version": "a666e01ebc77",
  "status": "published",
  "name": "Ml to Kg Converter",
  "question": "How do I convert ml to kg?",
  "summary": "Converts milliliters to kilograms and back for water, milk, flour, sugar, and other ingredients, from what each one weighs per liter.",
  "category": "convert",
  "subcategory": "cooking",
  "url": "https://www.acalculator.org/convert/ml-to-kg",
  "markdown": "https://www.acalculator.org/convert/ml-to-kg.md",
  "kind": "formulas",
  "method": "kg = ml ÷ 1000 × 0.999975, where kilograms per liter depends on the ingredient (water at 4 °C: 0.999975 kg)",
  "assumptions": [
    "Grams per cup are USDA FoodData Central (SR Legacy) portion weights for one level US cup (8 US fluid ounces): all-purpose flour 125 g (FDC 168894), granulated sugar 200 g (FDC 169655), brown sugar, packed 220 g (FDC 168833), powdered sugar, unsifted 120 g (FDC 169656), whole milk 244 g (FDC 171265), butter 227 g (FDC 173410), olive oil 216 g (FDC 171413), honey 339 g (FDC 169640), white rice, uncooked 185 g (FDC 169756).",
    "Water is pure water: 0.999975 kg per liter at 4 °C and 0.998207 kg per liter at 20 °C, from the Tanaka et al. (2001) density formula.",
    "Other ingredients use their USDA cup weight: kilograms per liter = grams per cup ÷ 236.5882365.",
    "The answer shows at most 6 decimal places; the calculation keeps full precision."
  ],
  "inputs": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "value": {
        "title": "Milliliters (mL)",
        "description": "The amount in milliliters to convert.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000000000
      },
      "result": {
        "title": "Kilograms (kg)",
        "description": "The same amount in kilograms.",
        "type": "number",
        "minimum": 0,
        "maximum": 1432869211.9905972
      },
      "ingredient": {
        "title": "Ingredient",
        "description": "What you are measuring. A cup of flour weighs less than a cup of water.",
        "type": "string",
        "enum": [
          "flour",
          "sugar",
          "brown-sugar",
          "powdered-sugar",
          "water",
          "water-20c",
          "milk",
          "butter",
          "olive-oil",
          "honey",
          "rice"
        ]
      }
    }
  },
  "solve": {
    "fillAny": 1,
    "variables": [
      "value",
      "result"
    ],
    "inputsOnly": []
  },
  "outputs": {
    "value": {
      "label": "Milliliters (mL)",
      "description": "The amount in milliliters to convert.",
      "format": "number"
    },
    "result": {
      "label": "Kilograms (kg)",
      "description": "The amount in kilograms.",
      "format": "number"
    }
  },
  "defaultAnswer": {
    "inputs": {
      "ingredient": "water",
      "value": 1
    },
    "outputs": {
      "result": 0.000999975
    },
    "text": "1 mL = 0.001 kg (Water at 4 °C, 0.999975 kg per L)."
  },
  "examples": [
    {
      "given": {
        "value": 1000,
        "ingredient": "water"
      },
      "expect": {
        "result": 0.999975
      },
      "source": "density of pure water from Tanaka et al. (2001), Metrologia 38, 301: 999.9749 kg/m³ at 4 °C, 998.2067 kg/m³ at 20 °C, as 0.999975 kg per liter"
    },
    {
      "given": {
        "value": 250,
        "ingredient": "olive-oil"
      },
      "expect": {
        "result": 0.22824465323744023
      },
      "source": "USDA FoodData Central SR Legacy 171413: 1 cup = 216 g"
    }
  ],
  "sources": [
    "USDA FoodData Central, SR Legacy portion weights for 1 cup: FDC 168894 all-purpose flour 125 g; FDC 169655 granulated sugar 200 g; FDC 168833 brown sugar, packed 220 g; FDC 169656 powdered sugar, unsifted 120 g; FDC 171265 whole milk 244 g; FDC 173410 butter 227 g; FDC 171413 olive oil 216 g; FDC 169640 honey 339 g; FDC 169756 white rice, uncooked 185 g. https://fdc.nal.usda.gov/",
    "Tanaka, M. et al. (2001), Recommended table for the density of water between 0 °C and 40 °C based on recent experimental reports, Metrologia 38, 301–309: pure water 999.9749 kg/m³ at 4 °C and 998.2067 kg/m³ at 20 °C. https://doi.org/10.1088/0026-1394/38/4/3",
    "NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8. https://www.nist.gov/pml/special-publication-811"
  ],
  "related": [
    "kg-to-lbs",
    "lbs-to-kg",
    "ml-to-oz",
    "ml-to-cups",
    "grams-to-kg"
  ],
  "changelog": []
}