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3 Pounds of Water in Cups
3 pounds of water equals 5.8 ( ~ 5 3/4) cups*
About water measurements
Water is the reference point for every other ingredient here, with a density of 1.0 g/ml, so one US cup is 237 g. It peaks near 1.000 g/ml at about 4°C and thins slightly as it warms, so hot water measured by volume weighs a touch less than cold.

Pounds of water equivalent in cups?
FAQs on water weight to volume conversion
Is 3 pounds of water 5.8 cups?
Yes — 3 pounds of water equals 5.8 ( ~ 5 3/4) cups, based on a density of 1000 g/ml.
3 pounds of water equals how many cups?
3 pounds of water is equivalent 5.8 ( ~ 5 3/4) cups.
How much is 5.8 cups of water in pounds?
5.8 cups of water equals 3 pounds.
Water Conversion Chart Near 1.8 Pounds
| Pounds to Cups of Water | |
|---|---|
| 1.8 pounds | 3.45 ( ~ 3 1/2) cups |
| 1.9 pounds | 3.64 ( ~ 3 2/3) cups |
| 2 pounds | 3.83 ( ~ 3 3/4) cups |
| 2.1 pounds | 4.03 ( ~ 4) cups |
| 2.2 pounds | 4.22 ( ~ 4 1/4) cups |
| 2.3 pounds | 4.41 ( ~ 4 1/3) cups |
| 2.4 pounds | 4.6 ( ~ 4 2/3) cups |
| 2.5 pounds | 4.79 ( ~ 4 3/4) cups |
| 2.6 pounds | 4.98 ( ~ 5) cups |
| 2.7 pounds | 5.18 ( ~ 5 1/8) cups |
| 2.8 pounds | 5.37 ( ~ 5 1/3) cups |
| 2.9 pounds | 5.56 ( ~ 5 1/2) cups |
| 3 pounds | 5.75 ( ~ 5 3/4) cups |
| 3.1 pounds | 5.94 ( ~ 6) cups |
| 3.2 pounds | 6.14 ( ~ 6 1/8) cups |
| 3.3 pounds | 6.33 ( ~ 6 1/3) cups |
| 3.4 pounds | 6.52 ( ~ 6 1/2) cups |
| 3.5 pounds | 6.71 ( ~ 6 3/4) cups |
| 3.6 pounds | 6.9 ( ~ 7) cups |
| 3.7 pounds | 7.09 ( ~ 7 1/8) cups |
| 3.8 pounds | 7.29 ( ~ 7 1/4) cups |
| 3.9 pounds | 7.48 ( ~ 7 1/2) cups |
| 4 pounds | 7.67 ( ~ 7 2/3) cups |
| 4.1 pounds | 7.86 ( ~ 7 3/4) cups |
| 4.2 pounds | 8.05 ( ~ 8) cups |
Note: Values are rounded to 3 significant figures. Fractions are rounded to common recipe fractions (1/8, 1/4, 1/3, 1/2, 2/3, 3/4…).
References:
Weight to Volume Conversions - Recipes
A note on cooking ingredients measurements
Notes: results are rounded (by default) to 3 significant figures. Cooking conversions use standard ingredient densities — the exact weight varies slightly with the brand and how tightly the ingredient is packed ☺.