How many kilograms are in 400 liters?

"Liters to Kilograms" Calculator
How many kilograms in
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How many kilograms are in 400 liters?

Answer

It depends on the density of the substance:
from 204 kg (LPG) to 800 kg (sand)

The question does not name a substance, and there is no single number for it: a liter fixes the volume, the weight comes from the density. For instance, 400 liters of water is 399.2 kg, while 400 liters of gasoline is 296 kg. The table below covers every substance.

Why a liter has no single weight

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.

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.

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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 400 liters? 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 many kilograms in
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How much 400 liters of each substance weighs

SubstanceMassDensity, kg/L
Beer404 kg1.01
Cement500–560 kg1.25–1.4
Coal261.6–506.4 kg0.654–1.266
Cucumbers248–256 kg0.62–0.64
Diesel333.6 kg0.834
Gasoline296 kg0.74
Honey568 kg1.42
Juice424 kg1.06
LPG204 kg0.51
Milk412 kg1.03
Mineral spirits312 kg0.78
Motor oil340 kg0.85
Sand660–800 kg1.65–2
Soil520–600 kg1.3–1.5
Sugar288–360 kg0.72–0.9
Tomatoes220–240 kg0.55–0.6
Vegetable oil368 kg0.92
Wall primer400 kg1
Water399.2 kg0.998

FAQ

How many kilograms are in 400 liters?

It depends on the density of the substance: from 204 kg (LPG) to 800 kg (sand)

Why does 400 liters not have one weight?

Because a liter measures volume and a kilogram measures mass, and what connects them is the density of the substance. The volume stays the same while the weight does not: across the table below it runs from 204 to 800 kg. That is why this page answers with a table, and gives a single number only once the substance is named.

How much does 400 liters of water weigh?

Water is the closest thing to the everyday rule that a liter equals a kilogram: 400 liters of water weighs 399.2 kg. The density of water at 20 °C is 0.998 kg/L, two thousandths short of one kilogram per liter. It is an example, not the answer to the question in the title — every other substance gives a different number, and those are in the table.

What is the heaviest and the lightest at this volume?

The lightest is LPG at 204 kg, the heaviest is sand at 800 kg. For bulk materials the upper figure assumes dense packing: sand gains about a fifth, soil about a seventh and cement about an eighth depending on whether it was settled or poured loose.

See Also