How many kilograms are in 20 liters of gasoline?

"Liters to Kilograms" Calculator

How many kilograms are in 20 liters of gasoline?

Answer

20 liters of gasoline weighs

14.8 kg

The density of gasoline is 0.74 kg/L (at 15 °C; the exact figure comes with the batch certificate). The source gives a band of 0.725–0.78 kg/L.

How the mass of 20 liters of gasoline was worked out

mass = volume × density

0.74 kg/L × 20 L

14.8 kg

The density comes from GOST 32513-2023 (Russian fuel standard). At 15 °C; the exact figure comes with the batch certificate.

Why a liter and a kilogram are not the same thing

A liter measures volume, a kilogram measures mass, and density is what ties them together: how many kilograms one liter of this particular substance comes to. The coincidence that makes people treat them as one thing is historical — in 1795 the gram was defined as the mass of one cubic centimeter of water, so a liter of water weighed a kilogram by construction. For anything else the equality breaks.

The extremes of this page make it obvious: one liter of LPG weighs 0.51 kg, while one liter of densely packed sand weighs 2 kg — four times more at the very same volume.

If the substance is not known in advance, start from how many kilograms are in 20 liters — the same volume across every substance at once.

The other way round: how much room a kilogram takes

This page starts from a volume and answers in kilograms. The opposite question — how many liters a given mass comes to — is what the kilograms to liters calculator is for. Both read the same density table, so the two pages agree wherever the answer is volume times density.

For gasoline that means 20 liters weighs 14.8 kg here, and one kilogram of it takes 1.35 liters there.

Related Calculations

About "Liters to Kilograms" Calculator

This calculator converts liters to kilograms through the density of the substance: mass equals volume times density. A liter on its own has no weight — a liter of water weighs almost exactly a kilogram, a liter of honey close to one and a half, and a liter of gasoline about three quarters. For example, it can help you find out how many kilograms are in 20 liters of gasoline? (The answer is: 14.8). For bulk materials — cement, sand, soil, coal, vegetables — density depends on how the material is packed, so the page prints a range and names the state it was measured in, instead of passing one number off as a physical constant.

"Liters to Kilograms" Calculator

How much 20 liters of each substance weighs

Substance	Mass	Density, kg/L
Beer	20.2 kg	1.01
Cement	25–28 kg	1.25–1.4
Coal	13.1–25.3 kg	0.654–1.266
Cucumbers	12.4–12.8 kg	0.62–0.64
Diesel	16.7 kg	0.834
Gasoline	14.8 kg	0.74
Honey	28.4 kg	1.42
Juice	21.2 kg	1.06
LPG	10.2 kg	0.51
Milk	20.6 kg	1.03
Mineral spirits	15.6 kg	0.78
Motor oil	17 kg	0.85
Sand	33–40 kg	1.65–2
Soil	26–30 kg	1.3–1.5
Sugar	14.4–18 kg	0.72–0.9
Tomatoes	11–12 kg	0.55–0.6
Vegetable oil	18.4 kg	0.92
Wall primer	20 kg	1
Water	20 kg	0.998

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