How many liters is 3 lbs of water?
How many liters is 3 lbs of water?
Answer
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, 3 lbs is 1.36 kg — the kilograms to liters page answers the same question from kilograms.
How the volume of 3 lbs of water was worked out
A pound is exactly 0.45359237 kilograms: the weight becomes kilograms, and the density turns kilograms into liters — the answer.
3 lb × 0.45359237 ÷ 0.998 kg/L
≈1.36 liters
(one point three six 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 3 lbs is 1.36 liters — and one liter of it weighs 2.2 lbs.
If the substance is not known in advance, start from how many liters 3 lbs 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

How many liters 3 lbs of each substance takes
| Substance | Volume of 3 lbs | One liter weighs | Density, kg/L |
|---|---|---|---|
| Milk | 1.32 liters | 2.27 lbs | 1.03 |
| Propane | 2.68 liters | 1.12 lbs | 0.5076 |
| Vegetable oil | 1.48 liters | 2.03 lbs | 0.92 |
| Water | 1.36 liters | 2.2 lbs | 0.998 |