Kilograms to Gallons Conversion Calculator
Enter the weight in kilograms below to calculate the volume in gallons.
Result: Gallons
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How to Convert Kilograms to Gallons
Since kilograms are a unit of mass and gallons are a unit of volume, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them. In this case, we need to account for the density of the substance whenever we do a conversion.
Therefore, to convert between kilograms and gallons of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.
Kilograms to Gallons Formula
To convert a measurement in kilograms to gallons, divide the weight by the density of the ingredient or material. Note that in order for this to work, the density must be in kilograms per gallon (kg/gal).
If the density is given in grams per milliliter (g/mL), then first multiply the density by 3.7854 to convert to kg/gal.
For a density given in g/mL, you can use this simple formula to convert:
gallons = kilograms / 3.7854 × density
Thus, the volume in gallons is equal to the weight in kilograms divided by 3.7854 times the density (in g/mL) of the ingredient, substance, or material.
For example, here's how to convert 5 kilograms to gallons for an ingredient with a density of 0.7 g/mL.
gallons = 5 kg / 3.7854 × 0.7 g/mL = 1.8869 gal
Kilogram to Gallon Conversion Table
| Weight in Kilograms: | Volume in Gallons of: | ||||
|---|---|---|---|---|---|
| Water | Milk | Cooking Oil | Gasoline | Diesel | |
| 1 kg | 0.264 gal | 0.256 gal | 0.3 gal | 0.357 gal | 0.311 gal |
| 2 kg | 0.528 gal | 0.513 gal | 0.6 gal | 0.714 gal | 0.622 gal |
| 3 kg | 0.793 gal | 0.769 gal | 0.901 gal | 1.071 gal | 0.932 gal |
| 4 kg | 1.057 gal | 1.026 gal | 1.201 gal | 1.428 gal | 1.243 gal |
| 5 kg | 1.321 gal | 1.282 gal | 1.501 gal | 1.785 gal | 1.554 gal |
| 6 kg | 1.585 gal | 1.539 gal | 1.801 gal | 2.142 gal | 1.865 gal |
| 7 kg | 1.849 gal | 1.795 gal | 2.101 gal | 2.499 gal | 2.176 gal |
| 8 kg | 2.113 gal | 2.052 gal | 2.402 gal | 2.856 gal | 2.486 gal |
| 9 kg | 2.378 gal | 2.308 gal | 2.702 gal | 3.213 gal | 2.797 gal |
| 10 kg | 2.642 gal | 2.565 gal | 3.002 gal | 3.57 gal | 3.108 gal |
| 11 kg | 2.906 gal | 2.821 gal | 3.302 gal | 3.927 gal | 3.419 gal |
| 12 kg | 3.17 gal | 3.078 gal | 3.602 gal | 4.284 gal | 3.729 gal |
| 13 kg | 3.434 gal | 3.334 gal | 3.903 gal | 4.641 gal | 4.04 gal |
| 14 kg | 3.698 gal | 3.591 gal | 4.203 gal | 4.998 gal | 4.351 gal |
| 15 kg | 3.963 gal | 3.847 gal | 4.503 gal | 5.355 gal | 4.662 gal |
| 16 kg | 4.227 gal | 4.104 gal | 4.803 gal | 5.712 gal | 4.973 gal |
| 17 kg | 4.491 gal | 4.36 gal | 5.103 gal | 6.069 gal | 5.283 gal |
| 18 kg | 4.755 gal | 4.617 gal | 5.404 gal | 6.426 gal | 5.594 gal |
| 19 kg | 5.019 gal | 4.873 gal | 5.704 gal | 6.783 gal | 5.905 gal |
| 20 kg | 5.283 gal | 5.13 gal | 6.004 gal | 7.14 gal | 6.216 gal |
When to Convert Kilograms to Gallons
Kilograms and gallons are both commonly used to measure cooking ingredients.
For cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements.[1] The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping.
The best way to ensure an accurate conversion is to use a scale. When a scale is not available, a calculator like the one above is a good way to estimate the weight to volume conversion.
Another useful application of weight and volume conversions is chemistry. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.
It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes.[2]
A third application of weight and volume conversions is when shipping freight when calculating the volumetric weight for cargo and packages. Trucks, ships, and airplanes are limited in the amount of weight or volume they can transport, so if one of those quantities is known, but the limitation is on the other, then it becomes necessary to convert between the two so as not to overload the shipping vehicle.
Keep reading to learn more about each unit of measure.
What Is a Kilogram?
One kilogram is equal to 1,000 grams, 2.204623 pounds, or 1/1,000 of a metric ton.
The formal definition of the kilogram changed in 2019. One kilogram was previously equal to the mass of the platinum-iridium bar, known as the International Prototype of the Kilogram, which was stored in Sèvres, France.
The 2019 SI brochure now defines the kilogram using the Planck constant, and it is defined using the meter and second.[3] It is equal to the mass of 1,000 cubic centimeters, or milliliters, of water.
The kilogram, or kilogramme, is the SI base unit for mass and is also a multiple of the gram. In the metric system, "kilo" is the prefix for thousands, or 103. Kilograms can be abbreviated as kg; for example, 1 kilogram can be written as 1 kg.
A kilogram is frequently referred to as a unit of weight. While technically, a kilogram is a measure of mass, and weight is actually a measure of force, the two are equivalent as long as we are performing our calculations on Earth.
For example, an object with a mass of 1 kilogram weighs 1 kilogram on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.
Learn more about kilograms.
What Is a Gallon?
The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.[4] The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.
The gallon is a US customary unit of volume. Gallons can be abbreviated as gal; for example, 1 gallon can be written as 1 gal.
Learn more about gallons.
References
- National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
- CK-12 Foundation, Introductory Chemistry (CK-12) - 12.6: Mass-Volume Stoichiometry, https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/12%3A_Stoichiometry/12.06%3A_Mass-Volume_Stoichiometry
- International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf
- National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf