[
  {
    "alias": "millimetre",
    "symbol": "mm",
    "choices": null
  },
  {
    "alias": "millimetres",
    "symbol": "mm",
    "choices": null
  },
  {
    "alias": "millimeter",
    "symbol": "mm",
    "choices": null
  },
  {
    "alias": "millimeters",
    "symbol": "mm",
    "choices": null
  },
  {
    "alias": "centimetre",
    "symbol": "cm",
    "choices": null
  },
  {
    "alias": "centimetres",
    "symbol": "cm",
    "choices": null
  },
  {
    "alias": "centimeter",
    "symbol": "cm",
    "choices": null
  },
  {
    "alias": "centimeters",
    "symbol": "cm",
    "choices": null
  },
  {
    "alias": "metre",
    "symbol": "m",
    "choices": null
  },
  {
    "alias": "metres",
    "symbol": "m",
    "choices": null
  },
  {
    "alias": "meter",
    "symbol": "m",
    "choices": null
  },
  {
    "alias": "meters",
    "symbol": "m",
    "choices": null
  },
  {
    "alias": "kilometre",
    "symbol": "km",
    "choices": null
  },
  {
    "alias": "kilometres",
    "symbol": "km",
    "choices": null
  },
  {
    "alias": "kilometer",
    "symbol": "km",
    "choices": null
  },
  {
    "alias": "kilometers",
    "symbol": "km",
    "choices": null
  },
  {
    "alias": "inch",
    "symbol": "in",
    "choices": null
  },
  {
    "alias": "inches",
    "symbol": "in",
    "choices": null
  },
  {
    "alias": "\"",
    "symbol": "in",
    "choices": null
  },
  {
    "alias": "″",
    "symbol": "in",
    "choices": null
  },
  {
    "alias": "foot",
    "symbol": "ft",
    "choices": null
  },
  {
    "alias": "feet",
    "symbol": "ft",
    "choices": null
  },
  {
    "alias": "'",
    "symbol": "ft",
    "choices": null
  },
  {
    "alias": "′",
    "symbol": "ft",
    "choices": null
  },
  {
    "alias": "yard",
    "symbol": "yd",
    "choices": null
  },
  {
    "alias": "yards",
    "symbol": "yd",
    "choices": null
  },
  {
    "alias": "yds",
    "symbol": "yd",
    "choices": null
  },
  {
    "alias": "mile",
    "symbol": "mi",
    "choices": null
  },
  {
    "alias": "miles",
    "symbol": "mi",
    "choices": null
  },
  {
    "alias": "nautical mile",
    "symbol": "nmi",
    "choices": null
  },
  {
    "alias": "nautical miles",
    "symbol": "nmi",
    "choices": null
  },
  {
    "alias": "milligram",
    "symbol": "mg",
    "choices": null
  },
  {
    "alias": "milligrams",
    "symbol": "mg",
    "choices": null
  },
  {
    "alias": "gram",
    "symbol": "g",
    "choices": null
  },
  {
    "alias": "grams",
    "symbol": "g",
    "choices": null
  },
  {
    "alias": "kilogram",
    "symbol": "kg",
    "choices": null
  },
  {
    "alias": "kilograms",
    "symbol": "kg",
    "choices": null
  },
  {
    "alias": "kilo",
    "symbol": "kg",
    "choices": null
  },
  {
    "alias": "kilos",
    "symbol": "kg",
    "choices": null
  },
  {
    "alias": "kgs",
    "symbol": "kg",
    "choices": null
  },
  {
    "alias": "tonne",
    "symbol": "t",
    "choices": null
  },
  {
    "alias": "tonnes",
    "symbol": "t",
    "choices": null
  },
  {
    "alias": "grain",
    "symbol": "gr",
    "choices": null
  },
  {
    "alias": "grains",
    "symbol": "gr",
    "choices": null
  },
  {
    "alias": "ounce",
    "symbol": "oz",
    "choices": null
  },
  {
    "alias": "ounces",
    "symbol": "oz",
    "choices": null
  },
  {
    "alias": "pound",
    "symbol": "lb",
    "choices": null
  },
  {
    "alias": "pounds",
    "symbol": "lb",
    "choices": null
  },
  {
    "alias": "lbs",
    "symbol": "lb",
    "choices": null
  },
  {
    "alias": "stone",
    "symbol": "st",
    "choices": null
  },
  {
    "alias": "stones",
    "symbol": "st",
    "choices": null
  },
  {
    "alias": "short ton",
    "symbol": "ton_us",
    "choices": null
  },
  {
    "alias": "short tons",
    "symbol": "ton_us",
    "choices": null
  },
  {
    "alias": "long ton",
    "symbol": "ton_imp",
    "choices": null
  },
  {
    "alias": "long tons",
    "symbol": "ton_imp",
    "choices": null
  },
  {
    "alias": "mm²",
    "symbol": "mm2",
    "choices": null
  },
  {
    "alias": "sq mm",
    "symbol": "mm2",
    "choices": null
  },
  {
    "alias": "cm²",
    "symbol": "cm2",
    "choices": null
  },
  {
    "alias": "sq cm",
    "symbol": "cm2",
    "choices": null
  },
  {
    "alias": "m²",
    "symbol": "m2",
    "choices": null
  },
  {
    "alias": "sq m",
    "symbol": "m2",
    "choices": null
  },
  {
    "alias": "hectare",
    "symbol": "ha",
    "choices": null
  },
  {
    "alias": "hectares",
    "symbol": "ha",
    "choices": null
  },
  {
    "alias": "km²",
    "symbol": "km2",
    "choices": null
  },
  {
    "alias": "sq km",
    "symbol": "km2",
    "choices": null
  },
  {
    "alias": "in²",
    "symbol": "in2",
    "choices": null
  },
  {
    "alias": "sq in",
    "symbol": "in2",
    "choices": null
  },
  {
    "alias": "ft²",
    "symbol": "ft2",
    "choices": null
  },
  {
    "alias": "sq ft",
    "symbol": "ft2",
    "choices": null
  },
  {
    "alias": "yd²",
    "symbol": "yd2",
    "choices": null
  },
  {
    "alias": "sq yd",
    "symbol": "yd2",
    "choices": null
  },
  {
    "alias": "acres",
    "symbol": "acre",
    "choices": null
  },
  {
    "alias": "mi²",
    "symbol": "mi2",
    "choices": null
  },
  {
    "alias": "sq mi",
    "symbol": "mi2",
    "choices": null
  },
  {
    "alias": "millilitre",
    "symbol": "mL",
    "choices": null
  },
  {
    "alias": "millilitres",
    "symbol": "mL",
    "choices": null
  },
  {
    "alias": "milliliter",
    "symbol": "mL",
    "choices": null
  },
  {
    "alias": "milliliters",
    "symbol": "mL",
    "choices": null
  },
  {
    "alias": "cm³",
    "symbol": "cm3",
    "choices": null
  },
  {
    "alias": "cc",
    "symbol": "cm3",
    "choices": null
  },
  {
    "alias": "litre",
    "symbol": "L",
    "choices": null
  },
  {
    "alias": "litres",
    "symbol": "L",
    "choices": null
  },
  {
    "alias": "liter",
    "symbol": "L",
    "choices": null
  },
  {
    "alias": "liters",
    "symbol": "L",
    "choices": null
  },
  {
    "alias": "m³",
    "symbol": "m3",
    "choices": null
  },
  {
    "alias": "in³",
    "symbol": "in3",
    "choices": null
  },
  {
    "alias": "cu in",
    "symbol": "in3",
    "choices": null
  },
  {
    "alias": "ft³",
    "symbol": "ft3",
    "choices": null
  },
  {
    "alias": "cu ft",
    "symbol": "ft3",
    "choices": null
  },
  {
    "alias": "US fl oz",
    "symbol": "floz_us",
    "choices": null
  },
  {
    "alias": "US cup",
    "symbol": "cup_us",
    "choices": null
  },
  {
    "alias": "US cups",
    "symbol": "cup_us",
    "choices": null
  },
  {
    "alias": "US pint",
    "symbol": "pt_us",
    "choices": null
  },
  {
    "alias": "US pints",
    "symbol": "pt_us",
    "choices": null
  },
  {
    "alias": "US quart",
    "symbol": "qt_us",
    "choices": null
  },
  {
    "alias": "US quarts",
    "symbol": "qt_us",
    "choices": null
  },
  {
    "alias": "US gallon",
    "symbol": "gal_us",
    "choices": null
  },
  {
    "alias": "US gallons",
    "symbol": "gal_us",
    "choices": null
  },
  {
    "alias": "imperial fl oz",
    "symbol": "floz_imp",
    "choices": null
  },
  {
    "alias": "imperial pint",
    "symbol": "pt_imp",
    "choices": null
  },
  {
    "alias": "imperial pints",
    "symbol": "pt_imp",
    "choices": null
  },
  {
    "alias": "imperial quart",
    "symbol": "qt_imp",
    "choices": null
  },
  {
    "alias": "imperial quarts",
    "symbol": "qt_imp",
    "choices": null
  },
  {
    "alias": "imperial gallon",
    "symbol": "gal_imp",
    "choices": null
  },
  {
    "alias": "imperial gallons",
    "symbol": "gal_imp",
    "choices": null
  },
  {
    "alias": "kelvin",
    "symbol": "K",
    "choices": null
  },
  {
    "alias": "°C",
    "symbol": "degC",
    "choices": null
  },
  {
    "alias": "℃",
    "symbol": "degC",
    "choices": null
  },
  {
    "alias": "celsius",
    "symbol": "degC",
    "choices": null
  },
  {
    "alias": "°F",
    "symbol": "degF",
    "choices": null
  },
  {
    "alias": "℉",
    "symbol": "degF",
    "choices": null
  },
  {
    "alias": "fahrenheit",
    "symbol": "degF",
    "choices": null
  },
  {
    "alias": "°R",
    "symbol": "degR",
    "choices": null
  },
  {
    "alias": "rankine",
    "symbol": "degR",
    "choices": null
  },
  {
    "alias": "joule",
    "symbol": "J",
    "choices": null
  },
  {
    "alias": "joules",
    "symbol": "J",
    "choices": null
  },
  {
    "alias": "kilojoule",
    "symbol": "kJ",
    "choices": null
  },
  {
    "alias": "kilojoules",
    "symbol": "kJ",
    "choices": null
  },
  {
    "alias": "megajoule",
    "symbol": "MJ",
    "choices": null
  },
  {
    "alias": "megajoules",
    "symbol": "MJ",
    "choices": null
  },
  {
    "alias": "watt hour",
    "symbol": "Wh",
    "choices": null
  },
  {
    "alias": "watt hours",
    "symbol": "Wh",
    "choices": null
  },
  {
    "alias": "kilowatt hour",
    "symbol": "kWh",
    "choices": null
  },
  {
    "alias": "kilowatt hours",
    "symbol": "kWh",
    "choices": null
  },
  {
    "alias": "megawatt hour",
    "symbol": "MWh",
    "choices": null
  },
  {
    "alias": "megawatt hours",
    "symbol": "MWh",
    "choices": null
  },
  {
    "alias": "kilocalorie",
    "symbol": "kcal",
    "choices": null
  },
  {
    "alias": "kilocalories",
    "symbol": "kcal",
    "choices": null
  },
  {
    "alias": "btus",
    "symbol": "Btu",
    "choices": null
  },
  {
    "alias": "gal",
    "symbol": null,
    "choices": "gal_us or gal_imp"
  },
  {
    "alias": "gallon",
    "symbol": null,
    "choices": "gal_us or gal_imp"
  },
  {
    "alias": "gallons",
    "symbol": null,
    "choices": "gal_us or gal_imp"
  },
  {
    "alias": "qt",
    "symbol": null,
    "choices": "qt_us or qt_imp"
  },
  {
    "alias": "quart",
    "symbol": null,
    "choices": "qt_us or qt_imp"
  },
  {
    "alias": "quarts",
    "symbol": null,
    "choices": "qt_us or qt_imp"
  },
  {
    "alias": "pt",
    "symbol": null,
    "choices": "pt_us or pt_imp"
  },
  {
    "alias": "pint",
    "symbol": null,
    "choices": "pt_us or pt_imp"
  },
  {
    "alias": "pints",
    "symbol": null,
    "choices": "pt_us or pt_imp"
  },
  {
    "alias": "fl oz",
    "symbol": null,
    "choices": "floz_us or floz_imp"
  },
  {
    "alias": "floz",
    "symbol": null,
    "choices": "floz_us or floz_imp"
  },
  {
    "alias": "fluid ounce",
    "symbol": null,
    "choices": "floz_us or floz_imp"
  },
  {
    "alias": "fluid ounces",
    "symbol": null,
    "choices": "floz_us or floz_imp"
  },
  {
    "alias": "cup",
    "symbol": null,
    "choices": "cup_us, or mL for a metric cup"
  },
  {
    "alias": "cups",
    "symbol": null,
    "choices": "cup_us, or mL for a metric cup"
  },
  {
    "alias": "ton",
    "symbol": null,
    "choices": "t (tonne), ton_us (short ton) or ton_imp (long ton)"
  },
  {
    "alias": "tons",
    "symbol": null,
    "choices": "t (tonne), ton_us (short ton) or ton_imp (long ton)"
  },
  {
    "alias": "Cal",
    "symbol": null,
    "choices": "cal (thermochemical calorie) or kcal (food Calorie)"
  },
  {
    "alias": "calorie",
    "symbol": null,
    "choices": "cal (thermochemical calorie) or kcal (food Calorie)"
  },
  {
    "alias": "calories",
    "symbol": null,
    "choices": "cal (thermochemical calorie) or kcal (food Calorie)"
  }
]