You will need
  • Table showing the density of a substance
Instruction
1
In fact, such a formula exists, but to talk about the transfer liters into kilograms impossible, as in physics you cannot bring a volume to weight, just as it is impossible to translate time into distance. Liters is a measure of liquid volume and kilograms is a measurement value of the mass.

However, you can always calculate the weight or mass of the substance that fills a liter of volume. To water true equality l=kg, ie, 1 liter of water equals 1 kg of weight. For all other substances, whether liquid or iron, mass, and volume are calculated according to the physical formula with a specific weight. The formula of total high school physics:

p=m/V,

where p is the density of the taken substance, m is its mass, V is the volume.

I.e., based on the formula, to convert kilograms to liters or liters to kilograms, you must first know the density of the substance.
2
To know the volume of material in liters, you need mass in kg divided by the density:

V=m/p.
3
But in order to find the mass in kg, you need the density multiplied by the volume of material in liters:

m=V*p.

Now, thanks to a simple formula, you know how to convert kilograms to liters, if you know the density. The density of a substance can be recognized by special physical tables.