# How much does 1 cup of water weigh?

The density of water at 4 °C is 1 gram per milliliter (1 g/mL).

There are 236.588 mL in one cup.

So 1 cup of pure water weighs about **236.588 g** (about
**8.3454 ounces**, avoirdupois)

This is true at 4°C (39.2 °F) where water is the densest (1000 kg/m3, and is pretty close at most other temperatures above freezing and below the boiling point of water. Water at room temperature is 998.2 kg/m3.

### How much does one cup of salt water weigh?

It will depend on how salty it is as the salt affects the density. 1 US cup = 236.588238 ml The density of pure water is exactly 1 gram per ml at 4 °C, and so 1 cup would weigh exactly 236.588238 g, or 8.345 oz (1 gram = 0.0352739619 ounces). The more salt you add, the higher the density, and the more 1 cup of salt water would weigh. Ocean water is only slightly…

### How much does one cup of water weight?

this is a fairly stupid question- how much does the cup weigh? do you want to know only the water in the cup quantity's weight or the cup+water? if cooking, there should be an index giving you that particular cook's idea of a cup's size. a gallon weighs 8.34 lbs.i think there is 16 cups in a gallon,divide 8.34by16 you have approx.52125 lbs(approx 1 half lb)

### Are fluid ounces different then ounces?

Ounces is a measure of weight, with 16 ounces in 1 pound. Fluid ounces is a measure of volume, with 8 ounces in a cup. There is no way to convert from one to the other since ingredients have different densities (weight per cup). For example, one cup (8 fl oz) of rice will weight much less than one cup of water. However, 8 fluid ounces (1 cup) of water does weigh approximately 8 ounces…