[ { "id": "1" , "What you know": "centimeters" , "Know symbol": "cm" , "What you need": "inches" , "Need symbol": "in" , "Multiplier": "0.393701" , "Category": "Length" } , { "id": "2" , "What you know": "meters" , "Know symbol": "m" , "What you need": "feet" , "Need symbol": "ft" , "Multiplier": "3.28084" , "Category": "Length" } , { "id": "3" , "What you know": "meters" , "Know symbol": "m" , "What you need": "yards" , "Need symbol": "yd" , "Multiplier": "1.093613" , "Category": "Length" } , { "id": "4" , "What you know": "kilometers" , "Know symbol": "km" , "What you need": "miles" , "Need symbol": "mi" , "Multiplier": "0.621371" , "Category": "Length" } , { "id": "5" , "What you know": "square centimeters" , "Know symbol": "cm²" , "What you need": "square inches" , "Need symbol": "in²" , "Multiplier": "0.155" , "Category": "Area" } , { "id": "6" , "What you know": "square meters" , "Know symbol": "m²" , "What you need": "square feet" , "Need symbol": "ft²" , "Multiplier": "10.76391" , "Category": "Area" } , { "id": "7" , "What you know": "square meters" , "Know symbol": "m²" , "What you need": "square yards" , "Need symbol": "yd²" , "Multiplier": "1.19599" , "Category": "Area" } , { "id": "8" , "What you know": "square kilometers" , "Know symbol": "km²" , "What you need": "square miles" , "Need symbol": "mi²" , "Multiplier": "0.386102" , "Category": "Area" } , { "id": "9" , "What you know": "hectares" , "Know symbol": "ha" , "What you need": "acres" , "Need symbol": "null" , "Multiplier": "2.471054" , "Category": "Area" } , { "id": "10" , "What you know": "grams" , "Know symbol": "g" , "What you need": "ounces" , "Need symbol": "oz" , "Multiplier": "0.035274" , "Category": "Mass" } , { "id": "11" , "What you know": "kilograms" , "Know symbol": "kg" , "What you need": "pounds" , "Need symbol": "lb" , "Multiplier": "2.204623" , "Category": "Mass" } , { "id": "12" , "What you know": "metric tons" , "Know symbol": "t" , "What you need": "short tons" , "Need symbol": "null" , "Multiplier": "1.102311" , "Category": "Mass" } , { "id": "13" , "What you know": "milliliters" , "Know symbol": "mL" , "What you need": "cubic inches" , "Need symbol": "in³" , "Multiplier": "0.061024" , "Category": "Volume" } , { "id": "14" , "What you know": "milliliters" , "Know symbol": "mL" , "What you need": "liquid ounces" , "Need symbol": "liq oz" , "Multiplier": "0.033814" , "Category": "Volume" } , { "id": "15" , "What you know": "liters" , "Know symbol": "L" , "What you need": "pints" , "Need symbol": "pt" , "Multiplier": "2.113376" , "Category": "Volume" } , { "id": "16" , "What you know": "liters" , "Know symbol": "L" , "What you need": "quarts" , "Need symbol": "qt" , "Multiplier": "1.056688" , "Category": "Volume" } , { "id": "17" , "What you know": "liters" , "Know symbol": "L" , "What you need": "gallons" , "Need symbol": "gal" , "Multiplier": "0.264172" , "Category": "Volume" } , { "id": "18" , "What you know": "cubic meters" , "Know symbol": "m³" , "What you need": "cubic feet" , "Need symbol": "ft³" , "Multiplier": "35.31467" , "Category": "Volume" } , { "id": "19" , "What you know": "cubic meters" , "Know symbol": "m³" , "What you need": "cubic yards" , "Need symbol": "yd³" , "Multiplier": "1.307951" , "Category": "Volume" } ]