Liters to Kg Converter
Convert liters to kilograms using the density of the substance. Since liters measure volume and kilograms measure mass, the conversion depends on what liquid or material you are measuring. Water has a density of 1 kg/L, so 1 liter of water equals exactly 1 kilogram.
How to Convert Liters to Kilograms
The formula to convert liters to kilograms is:
For water at 4°C, density = 1 kg/L, so 1 liter = 1 kilogram. For other substances, you must know the density. Oil is lighter than water (0.91 kg/L), while honey is heavier (1.42 kg/L).
Liters to Kg Conversion Table
| Substance | Density | 1 L = | 5 L = |
|---|---|---|---|
| Water (4°C) | 1 kg/L | 1.000 kg | 5.000 kg |
| Milk (whole) | 1.03 kg/L | 1.030 kg | 5.150 kg |
| Honey | 1.42 kg/L | 1.420 kg | 7.100 kg |
| Olive Oil | 0.92 kg/L | 0.920 kg | 4.600 kg |
| Vegetable Oil | 0.91 kg/L | 0.910 kg | 4.550 kg |
| Gasoline | 0.75 kg/L | 0.750 kg | 3.750 kg |
| Diesel Fuel | 0.85 kg/L | 0.850 kg | 4.250 kg |
| Ethanol | 0.789 kg/L | 0.789 kg | 3.945 kg |
| Mercury | 13.6 kg/L | 13.600 kg | 68.000 kg |
| Seawater | 1.025 kg/L | 1.025 kg | 5.125 kg |
Frequently Asked Questions
How many kg is 1 liter of water?
1 liter of water weighs exactly 1 kilogram at 4°C (its maximum density). At room temperature (20°C), it weighs 0.998 kg — essentially the same for practical purposes.
How many kg is 1 liter of milk?
1 liter of whole milk weighs approximately 1.03 kg. Milk is slightly denser than water due to dissolved proteins, fats, and sugars.
How many kg is 1 liter of oil?
1 liter of vegetable oil weighs about 0.91 kg. Oil is less dense than water, which is why oil floats on water.
Can you directly convert liters to kg?
Not without knowing the density. Liters measure volume and kilograms measure mass. You need the density of the substance to convert between them. The formula is: kg = liters × density.