How to Convert Fluid Ounces of Water to Weight

An ounce of water may be a weight or a volume.
••• Jupiterimages/Comstock/Getty Images

The fluid ounce is a measure of volume rather than weight. There are 16 fluid oz. to a pint in the U.S. customary system, and 20 fluid oz. to a pint in the Imperial system used elsewhere in the world. An Imperial fluid ounce weighs exactly 1 oz., so conversion between volume and weight is not necessary. A customary fluid ounce of water weighs slightly more than 1 oz., but converting from volume to weight is a simple process.

    Enter the value in fluid ounces into the calculator. Check the calculator display to make sure you entered it correctly.

    Multiply by 1.043, the weight of 1 fluid oz. of pure water. The result is the weight of the water.

    Check for errors. Divide the result from Step 2 by 1.043. If the result does not equal the value obtained in Step 2, an error occurred. Repeat the calculations until the results match.


    • For most purposes, it is safe to assume that the weight of 1 fluid oz. of pure water equals an ounce.


    • The values are for pure water at standard temperature and pressure. Water such as seawater, containing dissolved solids, does not weigh the same as pure water.

Related Articles

How to Convert Grams of Fuel Per kWh to Gallons Per...
How to Convert ml to Ounces
How to Make a Five Percent Solution With Salt
How to Make an Eyedropper Syringe
How to Convert Ounces to Metric
How to Convert Gallons, Quarts, Pints and Cups
How to Convert Water Hardness in mg/L to GPG
How to Convert Grams of Fuel Per kWh to Gallons Per...
How to Calculate Percent Solids by Weight
How to Convert Ounces to Mililiters
How to Convert Stokes to Poise
Gallons to Kilograms Conversion
How to Calculate Buoyant Force
How to Calculate Buoy Floatation in the Water
How to Calculate Mole Fractions Using Mass Percent
How to Convert From Moles Per Liter to Percentage
How to Convert ML to MG
How to Mix Calcium Chloride and Water
How to Make a 20% Sugar Solution