Liters to Kilograms Converter (L to kg)
Convert liters (L) to kilograms (kg) for any substance. Select from 20 common ingredients or enter a custom density for instant, accurate volume-to-weight conversion at liter scale.
WEIGHT IN KILOGRAMS
1 kg
POUNDS
2.205 lbs
US GALLONS
0.264 gal
FORMULA
1 Γ 1
Quick Reference β Water
| Liters | Kilograms | Pounds | US Gallons |
|---|---|---|---|
| 0.25 L | 0.250 kg | 0.551 lbs | 0.066 gal |
| 0.5 L | 0.500 kg | 1.102 lbs | 0.132 gal |
| 1 L | 1.000 kg | 2.205 lbs | 0.264 gal |
| 1.5 L | 1.500 kg | 3.307 lbs | 0.396 gal |
| 2 L | 2.000 kg | 4.409 lbs | 0.528 gal |
| 3 L | 3.000 kg | 6.614 lbs | 0.793 gal |
| 4 L | 4.000 kg | 8.818 lbs | 1.057 gal |
| 5 L | 5.000 kg | 11.023 lbs | 1.321 gal |
| 10 L | 10.000 kg | 22.046 lbs | 2.642 gal |
| 20 L | 20.000 kg | 44.092 lbs | 5.283 gal |
| 50 L | 50.000 kg | 110.231 lbs | 13.209 gal |
| 100 L | 100.000 kg | 220.462 lbs | 26.417 gal |
How to Convert Liters to Kilograms
Liters (L) measure volume β one liter equals 1,000 milliliters or about 0.264 US gallons. Kilograms (kg) measure mass. The conversion requires knowing the density of the substance.
The conversion formula is:
For example: 5 liters of water = 5 Γ 1.0 = 5 kg (11.02 lbs), while 5 liters of olive oil = 5 Γ 0.92 = 4.6 kg (10.14 lbs).
Key insight: The density in kg/L is numerically the same as g/mL. Water has a density of 1.0 kg/L (= 1.0 g/mL), so 1 liter of water weighs exactly 1 kilogram. For any other substance, the weight per liter differs.
Why 1 Liter Does NOT Always Weigh 1 Kilogram
The original definition of the kilogram was based on water β 1 kg was the mass of 1 liter of water at 4Β°C. This is why people often assume 1 L = 1 kg. But this only holds for water:
- 1 liter of honey = 1.42 kg (3.13 lbs) β 42% heavier than water
- 1 liter of olive oil = 0.92 kg (2.03 lbs) β 8% lighter than water
- 1 liter of flour = 0.53 kg (1.17 lbs) β almost half the weight of water
- 1 liter of rolled oats = 0.36 kg (0.79 lbs) β barely a third of water's weight
Liter to Kilogram Reference Table β Common Substances
| Substance | Density (kg/L) | 1 L = | 5 L = | 10 L = |
|---|---|---|---|---|
| Water | 1.00 | 1.00 kg | 5.00 kg | 10.00 kg |
| Whole Milk | 1.03 | 1.03 kg | 5.15 kg | 10.30 kg |
| Heavy Cream | 1.01 | 1.01 kg | 5.05 kg | 10.10 kg |
| All-Purpose Flour | 0.53 | 0.53 kg | 2.65 kg | 5.30 kg |
| Granulated Sugar | 0.85 | 0.85 kg | 4.25 kg | 8.50 kg |
| Honey | 1.42 | 1.42 kg | 7.10 kg | 14.20 kg |
| Maple Syrup | 1.33 | 1.33 kg | 6.65 kg | 13.30 kg |
| Olive Oil | 0.92 | 0.92 kg | 4.60 kg | 9.20 kg |
| Vegetable Oil | 0.92 | 0.92 kg | 4.60 kg | 9.20 kg |
| Butter (melted) | 0.91 | 0.91 kg | 4.55 kg | 9.10 kg |
| Table Salt | 1.22 | 1.22 kg | 6.10 kg | 12.20 kg |
| Rice (uncooked) | 0.85 | 0.85 kg | 4.25 kg | 8.50 kg |
Liters to US Customary Units
Since this converter is designed for a US audience, here's how liters relate to common US volume measurements:
| Liters | US Gallons | US Quarts | US Pints | US Cups | Fluid Ounces |
|---|---|---|---|---|---|
| 0.5 L | 0.132 | 0.528 | 1.057 | 2.113 | 16.907 |
| 1 L | 0.264 | 1.057 | 2.113 | 4.227 | 33.814 |
| 2 L | 0.528 | 2.113 | 4.227 | 8.454 | 67.628 |
| 3.785 L | 1.000 | 4.000 | 8.000 | 16.000 | 128.000 |
| 5 L | 1.321 | 5.283 | 10.567 | 21.134 | 169.070 |
| 10 L | 2.642 | 10.567 | 21.134 | 42.268 | 338.140 |
| 20 L | 5.283 | 21.134 | 42.268 | 84.535 | 676.280 |
Note: 1 US gallon = 3.785 liters. This is different from an Imperial (UK) gallon, which is 4.546 liters.
When You Need Liter-to-Kilogram Conversion
- Cooking and catering at scale: Restaurant and catering recipes often specify liquids in liters but dry goods in kilograms. Converting between the two ensures accurate bulk preparation.
- Aquariums and water features: Knowing that 1 liter of water = 1 kg helps you calculate the total weight of a filled aquarium. A 200-liter (53-gallon) tank weighs 200 kg (441 lbs) of water alone β plus the tank itself.
- Shipping and freight: Carriers charge by weight, not volume. If you're shipping 50 liters of olive oil, you need to know it weighs 46 kg (101 lbs), not 50 kg β which could affect your shipping bracket.
- Chemistry and industrial applications: Chemical reactions require precise mass inputs. When working with large volumes of liquids, converting liters to kg ensures stoichiometric accuracy.
- Homebrewing and winemaking: Brewers often measure ingredients by volume (liters) but need weights for shipping, recipe scaling, and gravity calculations.
- Fuel and automotive: Gasoline has a density of about 0.74 kg/L. A full 60-liter (16-gallon) tank holds about 44.4 kg (98 lbs) of fuel.
What Is a Liter? What Is a Kilogram?
A liter is a metric unit of volume equal to 1,000 cubic centimeters (cmΒ³), 1,000 milliliters, or about 0.264 US gallons. It's abbreviated as L (capitalized to distinguish it from the number "1").
A kilogram is the SI base unit of mass, equal to 1,000 grams or about 2.205 pounds. Since 2019, it's formally defined using the Planck constant rather than a physical artifact. The prefix "kilo-" means 1,000, so 1 kg = 1,000 g. It's abbreviated as kg.
Historically, the kilogram was defined as the mass of 1 liter of water at 4Β°C β which is why water's density of exactly 1.0 kg/L serves as the universal baseline for volume-to-weight conversions.