公斤與公升怎樣對換

In order to calculate how many Litre for 1KG, first you need to know what kind of substance you are talking about. For more details, you need to know the density of the substance and using the formula below:

density = mass / volume

unit of density = kilogram/cubic-metre
unit of mass = kilogram
unit of volume = cubic-metre

For example: pure water...
density = 1,000kg/cubic-m and mass = 1kg

1,000 = 1/volume
volume = 1/1,000 cubic-metre
= 0.001 cubic-metre
= 0.001 x 1000 L
= 1 L

advance example: olive oil...
density = 918 kg/cubic-m and if mass = 1kg

918 = 1/volume
volume = 1/918 = 0.0010893 cubic-metre
= 0.0010893 x 1000 L
= 1.0893 L

Therefore, as you can see, oil is lighter than water and oil will float on the water ( as this is very common in reality )


Back to the question, if you want to ask how many Litre for 1KG of "water", then, it is = 1L. 1公斤 water 等於1公升 water

公斤是重量單位而公升是容量單位, 兩者是沒有直接關係的, 所以不能對換

就好像我問攝氏 1 度等於幾長, 由於是不同單位, 所以不能對換