How much does 1 gallon of motor oil weigh

1 US gallon of oil engine equals 3.35 kilograms

Volume to 'Weight' Converter - Chemistry

Inputs	?Notes: the results in this calculator are rounded (by default) to 3 significant figures. The densities values are show and are valid for a certain temperature. Don't use this calculator for critical purposes, unless you know what you are doing exactly.
Material or substance:
	?Please, choose an substance by typing its name in the left box.
From
Volume Unit:	Volume Quantity:
		?Please, select the volume unit (cup, milliliter, liter ...) to which you want to convert, then select its quantity. Ex.: 1, 1/2, ...
To
Unit of Weight (Mass):
		?Please, select the weight unit (kilogram, tonne, pound, etc.), then press / click the 'Calculate' button.
	Significant Figures: 2 3 4 5
Results 1 US gallon of oil engine weighs 3.35 kilograms. 3.3500894 kilograms precisely. Some values are approximate. Note: Oil engine at 25 °C | density: 885 kg/m³.
See also Substances Densities Chart

How to convert 1 US gallon of oil engine to kilograms

To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula:

mass = density × volume

We want to calculate the mass in kilograms from a volume in US gallons. We have the density table at the bottom of this web page that shows us the densities values in kg/m³, so we will use the folowing formula (see why below):

mass = d × v × vcfmcf, where vcf is the conversion factor to convert from US gallon to cubic meters (table near the end of this page) and mcf equals 1 because the mass is already in kiliograms.

So, plugging these values in the formula above, we get:

mass = 885 × 1 × 0.0037854117841

mass = 885 × 0.003785411784, or

mass = 3.35009 kilograms (answer)

There are other ways to convert from volume to mass. This is one of them.

How to convert from volume to mass (incorrectly called weight)?

Well, by definition of density we just need to use the formula:

mass = density × volume

Example: How much does 2 cubic meters of gasoline weigh in kilograms if the gasoline density is 750 kg/m³?

Plugging the values in the formula, we get

mass = density × volume = 750 × 2 = 1500 Kg

Very simple isn't it? Yes, it is as simple as that. But this works fine when the density value we have (from a chart for example) is defined using the same unit of volume and mass that we will use in the formula. For example, mass in kg and volume in liters. If we have, for example, mass in pounds and volume in gallons, we should do something to correct our result.

To transform the mass from pounds to kilograms we should multiply the mass in pounds by 0.45359237. We will call 0.45359237 the mass conversion factor - mcf

Matematically we write:

mass in kilograms = mass in pounds × mcf or

mkg = mlb × mcf (1)

To transform the volume from gallons to cubic meters we should multiply the volume in cubic meters by 0.003785411784. We will call 0.003785411784 the volume conversion factor - vcf

Matematically we write:

volume in cubic meters = volume in gallons × vcf or

vm³ = vgal × vcf (2)

Now, dividing the equation (1) by the equation (2), we get

mkgvm³ = mlb × mcfvgal × vcf, or

mkgvm³ = mlbvgal × mcfvcf, but mkgvm³ is, by definition, the density (d) in kg/m³, so

d = mlbvgal × mcfvcf

Rearranging the formula above we get

mlb = d × vgal × vcfmcf

Finally, we can generalize this formula any units of mass and volume, since we know how to find the values for mcf and vcf (Check the factor tables below).

m = d × v × vcfmcf

That is exactly the formula that we use in this calculator. You can see how this formula works reading the example above or/and choosing another one at the bottom of this page.

US gallons of oil engine to kilograms Chart

US gallons of oil engine to kilograms

0.1 US gallon of oil engine	=	0.335 kilogram
1/5 US gallon of oil engine	=	0.67 kilogram
0.3 US gallon of oil engine	=	1.01 kilograms
0.4 US gallon of oil engine	=	1.34 kilograms
1/2 US gallon of oil engine	=	1.68 kilograms
0.6 US gallon of oil engine	=	2.01 kilograms
0.7 US gallon of oil engine	=	2.35 kilograms
0.8 US gallon of oil engine	=	2.68 kilograms
0.9 US gallon of oil engine	=	3.02 kilograms
1 US gallon of oil engine	=	3.35 kilograms

US gallons of oil engine to kilograms

1 US gallon of oil engine	=	3.35 kilograms
1.1 US gallons of oil engine	=	3.69 kilograms
1 1/5 US gallons of oil engine	=	4.02 kilograms
1.3 US gallons of oil engine	=	4.36 kilograms
1.4 US gallons of oil engine	=	4.69 kilograms
1 1/2 US gallons of oil engine	=	5.03 kilograms
1.6 US gallons of oil engine	=	5.36 kilograms
1.7 US gallons of oil engine	=	5.7 kilograms
1.8 US gallons of oil engine	=	6.03 kilograms
1.9 US gallons of oil engine	=	6.37 kilograms

Note: some values may be rounded.

These tables contain the most frequently used vcf and mcf.

Volume UnitFactor to convert to m³ (vcf)

milliliter	0.000001
UK fluid ounce	0.0000284130625
US fluid ounce	0.00002957352956
UK gallon	0.00454609
US gallon	0.003785411784

Mass UnitFactor to convert to kg (mcf)

milligram	0.000001
gram	0.001
tonne	1000
pound	0.45359237
ounce	0.02834952313

References:

1. Mass, Weight, Density or Specific Gravity of Liquids
2. Mass, Weight, Density or Specific Gravity of Water at Various Temperatures
3. Full Weight Converter

FAQs on oil engine weight to volume conversion

1 US gallon of oil engine equals how many kilograms?

1 US gallon of oil engine is equivalent 3.35 kilograms.

How much is 3.35 kilograms of oil engine in US gallons?

3.35 kilograms of oil engine equals 1 US gallon.

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