How many liters is 42 lbs?

"Pounds to Liters" Calculator
How many liters in
lb

How many liters is 42 lbs?

Answer

42 lbs of water is
19.1 liters

The question names no substance, so the answer above is for water — the usual reference, taken at 20 °C (68 °F). Other liquids fill a different number of liters at the same weight: across the table below 42 lbs runs from 18.5 liters (milk) to 37.5 liters (propane).

In kilograms, 42 lbs is 19.1 kg — the kilograms to liters page answers the same question from kilograms.

How the volume of 42 lbs 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.

42 lb × 0.45359237 ÷ 0.998 kg/L

≈

19.1 liters

(nineteen point one 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 42 lbs is 19.1 liters — and one liter of it weighs 2.2 lbs.

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 42 lbs? (The answer is: 19.1). 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 42 lbs of each substance takes

SubstanceVolume of 42 lbsOne liter weighsDensity, kg/L
Milk18.5 liters2.27 lbs1.03
Propane37.5 liters1.12 lbs0.5076
Vegetable oil20.7 liters2.03 lbs0.92
Water19.1 liters2.2 lbs0.998

FAQ

How many liters is 42 lbs?

42 lbs of water is 19.1 liters

Why is the answer given for water?

Because the question names no substance, and water is what people mean by default: 42 lbs of water is 19.1 liters at 20 °C (68 °F). A pound measures weight, not volume, so every other liquid fills a different number of liters — the table on this page lists them side by side.

What takes the most and the least room at this weight?

The most compact in the table is milk at 18.5 liters, the bulkiest is propane at 37.5 liters. What is heaviest per liter is the most compact per pound.

How do you convert 42 lbs to liters for another liquid?

Divide by the weight of one liter of that liquid. If you know its density in kilograms per liter, one liter weighs about density × 2.2046 lbs, because a pound is exactly 0.45359237 kilograms.

See Also