How many liters is 1 lb of water?

"Pounds to Liters" Calculator
How many liters in
lb

How many liters is 1 lb of water?

Answer

1 lb of water is
0.45 liters

Water is taken at 20 °C (68 °F), where its density is 0.998 kg/L, so one liter of it weighs 2.2 lbs. Colder water is a touch denser, so the same weight of it takes slightly less room.

In kilograms, 1 lb is 0.45 kg — the kilograms to liters page answers the same question from kilograms.

How the volume of 1 lb of water was worked out

liters = pounds × 0.45359237 ÷ density (kg/L)

A pound is exactly 0.45359237 kilograms: the weight becomes kilograms, and the density turns kilograms into liters — the answer.

1 lb × 0.45359237 ÷ 0.998 kg/L

≈

0.45 liters

(zero point four five liters)

The density comes from FAO/INFOODS Density Database v2.0: liquid water at 20 °C; rounding to 1.00 kg/L is fine for everyday use.

The other way round: what one liter of this weighs

This page starts from a weight and answers in liters. The opposite question — how much a given number of liters weighs — is what the liters to pounds calculator is for, and in metric units the same question is liters to kilograms. All of them read one density table, so their numbers agree.

For water the density is 0.998 kg/L, so 1 lb is 0.45 liters — and one liter of it weighs 2.2 lbs.

If the substance is not known in advance, start from how many liters 1 lb is — the same weight across every substance at once.

Related Calculations

See Also

  • Liters to Pounds - How much a liter of water, gasoline or propane weighs in pounds — by density
  • Kilograms to Liters - How many liters are in a kilogram of water, honey, gasoline, sand and other substances — by density
  • Pounds to Gallons - How many gallons a pound of water, milk, oil or propane takes — by density
  • Lbs to Kg - Convert Pounds to Kilograms

About "Pounds to Liters" Calculator

This calculator converts pounds to liters through the density of the substance: volume equals weight divided by the weight of one liter. The lighter the substance, the more liters the same pounds fill — a pound of propane takes almost twice the room of a pound of water. When no substance is named, the answer is for water, and the table shows the other liquids next to it. For example, it can help you find out how many liters is 1 lb of water? (The answer is: 0.45). Every result page also gives the weight in kilograms, which does not depend on the substance at all.
"Pounds to Liters" Calculator
How many liters in
lb

How many liters 1 lb of each substance takes

SubstanceVolume of 1 lbOne liter weighsDensity, kg/L
Milk0.44 liters2.27 lbs1.03
Propane0.89 liters1.12 lbs0.5076
Vegetable oil0.49 liters2.03 lbs0.92
Water0.45 liters2.2 lbs0.998

FAQ

How many liters is 1 lb of water?

1 lb of water is 0.45 liters

How do you work out the volume of 1 lb of water?

Divide the weight by the weight of one liter. One liter of water weighs 2.2 lbs (density 0.998 kg/L), so 1 lb is 0.45 liters — division rarely comes out even, so the figure is rounded.

How many liters is a pound of water?

0.45 liters at 20 °C (68 °F): a liter of water weighs 2.2 lbs, a little over two pounds, so one pound fills a little under half a liter. At 4 °C (39 °F), where water is densest, a liter weighs almost exactly a kilogram — about 2.2046 lbs — and the same weight takes a fifth of a percent less room.

How many kilograms is 1 lb of water?

1 lb × 0.45359237 ≈ 0.45 kg, whatever the substance: a pound is exactly 0.45359237 kilograms. The liters depend on the density, the kilograms do not — for water they come out close to the same number, 0.45 liters, because a liter of water weighs almost a kilogram.

See Also