Volume to weight converter

This calculator converts from volume to weight (mass) according to the substance that you choose.

Volume to 'Weight' Converter


?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.
?Please, choose an substance by typing its name in the left box.


?Please, select the volume unit (cup, milliliter, liter ...) to which you want to convert, then select its quantity. Ex.: 1, 1/2, ...


?Please, select the weight unit (kilogram, tonne, pound, etc.), then press / click the 'Calculate' button.
Significant Figures:


1 liter of alcohol, ethyl weighs 0.785 kilogram.

0.78506 kilogram precisely. Some values are approximate. Note: Alcohol, ethyl at 25 °C | density: 785.06 kg/m³. Ethyl alcohol, ethanol and alcohol are the same chemical compound with the chemical formula C2H5OH.

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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

v = vgal × vcf (2)

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

mkgv = mlb × mcfvgal × vcf, or

mkgv = mlbvgal × mcfvcf, but mkgv 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.

Liter to Kilogram Conversion Chart - Alcohol, ethyl

Note: Fractions are rounded to the nearest 8th fraction. Values are rounded to 3 significant figures.

liters to kilograms of Alcohol, ethyl
1 liter = 0.785 kilogram
2 liters = 1.57 kilograms
4 liters = 3.14 kilograms
5 liters = 3.93 kilograms
8 liters = 6.28 kilograms
1/16 liter = 0.0491 kilogram
1/8 liter = 0.0981 kilogram
1/4 liter = 0.196 kilogram
1/3 liter = 0.262 kilogram
1/2 liter = 0.393 kilogram
2/3 liter = 0.523 kilogram
3/4 liter = 0.589 kilogram
1 1/16 liters = 0.834 kilogram
1 1/8 liters = 0.883 kilogram
1 1/4 liters = 0.981 kilogram
1 1/3 liters = 1.05 kilograms
1 1/2 liters = 1.18 kilograms
1 2/3 liters = 1.31 kilograms
1 3/4 liters = 1.37 kilograms
2 1/16 liters = 1.62 kilograms
2 1/8 liters = 1.67 kilograms
2 1/4 liters = 1.77 kilograms
2 1/3 liters = 1.83 kilograms

The above tables contains values for the densities of many common substances in kilograms per cubic meter. The last column shows at which temperature the measurement was made. See details on how to use it above.

Volume UnitFactor to convert to m³ (vcf)
UK fluid ounce0.0000284130625
US fluid ounce0.00002957352956
UK gallon0.00454609
US gallon0.003785411784
Mass UnitFactor to convert to kg (mcf)

The above tables contains the conversion factors to convert units of volume to cubic meter, as well as, to convert other units of mass to kilograms. See details above.


While every effort is made to ensure the accuracy of the information provided on this website, neither this website nor its authors are responsible for any errors or omissions, or for the results obtained from the use of this information. All information in this site is provided “as is”, with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information.