15 liters of water would be 15 kg - but 15 liters of liquid lead or Mercury would be heavier. It depends on the substance. You can not equate volume and mass without density and temperature. 15 liters of steam would be about 0.02 kg
A kilogram is a unit of mass. A liter is a unit of volume, so the two are incompatible. If you are asking for kilolitres, then 1000 litres is a kiloliter.
Liters and kg are not compatible
15000grams = 15Kg
15000g equals 15kg
218
212 pints equal to 100 liters
500 millimeters equal 2 liters
0.00001 liters
3,000 liters
0.95 liters
5.45 liters
5kl
1.298 liters
1.2 liters