Kilograms to Liters Converter (kg to L)

How to Convert Kilograms to Liters

To convert kilograms to liters, divide the weight by the substance's density. Different substances occupy different volumes for the same weight because they have different densities.

Notice how 5 kg of oil takes up more space than 5 kg of honey — because oil is less dense. This is why you can't simply say "1 kg = 1 liter" for anything except water.

Kilograms to Liters — Common Substances

How much volume does 1 kg of each substance occupy?

Substance	Density (kg/L)	1 kg =	5 kg =	10 kg =
Water	1.00	1.000 L	5.000 L	10.000 L
Whole Milk	1.03	0.971 L	4.854 L	9.709 L
Olive Oil	0.91	1.099 L	5.495 L	10.989 L
Honey	1.43	0.699 L	3.497 L	6.993 L
All-Purpose Flour	0.53	1.887 L	9.434 L	18.868 L
Granulated Sugar	0.85	1.176 L	5.882 L	11.765 L
Rice (uncooked)	0.82	1.220 L	6.098 L	12.195 L
Salt (table)	1.20	0.833 L	4.167 L	8.333 L
Vegetable Oil	0.91	1.099 L	5.495 L	10.989 L
Cream (heavy)	1.01	0.990 L	4.950 L	9.901 L

Why 1 Kilogram Is Not Always 1 Liter

Only for water at 4°C does 1 kg = exactly 1 liter. For every other substance, the relationship depends on density:

• Less dense than water (oil, flour, butter): 1 kg occupies more than 1 liter
• Denser than water (honey, salt, corn syrup): 1 kg occupies less than 1 liter

For Americans: think of it like this — a gallon of water weighs about 8.34 pounds (3.78 kg), but a gallon of honey weighs about 12 pounds (5.4 kg). Same volume, very different weights.

US Volume Equivalents

Since Americans commonly use gallons, quarts, and cups:

Liters	US Gallons	US Quarts	US Cups	Fluid Ounces
0.5 L	0.132 gal	0.528 qt	2.113 cups	16.907 fl oz
1.0 L	0.264 gal	1.057 qt	4.227 cups	33.814 fl oz
2.0 L	0.528 gal	2.113 qt	8.454 cups	67.628 fl oz
3.785 L	1.000 gal	4.000 qt	16.000 cups	128.000 fl oz
5.0 L	1.321 gal	5.283 qt	21.134 cups	169.070 fl oz
10.0 L	2.642 gal	10.567 qt	42.268 cups	338.140 fl oz

What Is a Kilogram?

The kilogram (kg) is the SI base unit of mass, equal to 1,000 grams or approximately 2.205 pounds. Since 2019, it has been defined using the Planck constant rather than a physical artifact. In cooking, kilograms are used worldwide for measuring ingredients by weight — the most accurate method for baking.

What Is a Liter?

A liter (L) is a metric unit of volume equal to 1,000 milliliters, 1,000 cubic centimeters, or approximately 0.264 US gallons. For Americans: 1 liter is slightly more than 1 US quart (1 L = 1.057 qt). A standard 2-liter bottle of soda holds 2 liters (about half a gallon).

When to Convert Kilograms to Liters

• Cooking and baking: A recipe says "500g flour" but you only have measuring cups. 500g flour ÷ 0.53 kg/L = 0.943 L ≈ about 4 US cups.
• Shipping and freight: Carriers charge by either weight or volume (dimensional weight). Converting between kg and liters helps determine which measurement results in higher shipping costs.
• Chemistry and labs: Mixing chemicals requires precise mass-to-volume conversions. A reaction calling for 2 kg of a reagent needs to know the volume to select the right container.
• Fuel calculations: Fuel is sold by the liter in most countries but sometimes measured by weight. 1 kg of gasoline ≈ 1.37 liters (density ~0.73 kg/L).
• Water storage and tanks: A 200-liter barrel holds 200 kg of water. But the same barrel holds only 182 kg of cooking oil (density 0.91 kg/L).