fluid ounces to pounds

[Unregistered]

how many pounds are in 46 fluid ounces

[Sandra]

Re: fluid ounces to pounds

how many pounds are in 46 fluid ounces

46 / 16 = 2.875 pounds

[JohnS]

Re: fluid ounces to pounds

46 / 16 = 2.875 pounds

Sandra,

That would be correct if he were asking about avoirdupois ounces (weight). He is asking about fluid ounces. Since they are a unit of volume, and pounds are mass, you have to know what the liquid is and it's density. 46 fl oz of air, water, and mercury would have very different weights.

Even for water, 1 pint (16 fl oz) weighs 1.043 lb (16.69 av oz), so a pint is not quite a pound, the world around.
(Especially not in Commonwealth countries where a pint is 1.25 lb, but not quite in the US either)

[Sandra]

Re: fluid ounces to pounds

Sorry John, I thought it was a student that didn't know how many ounces were in a pound. I do know that troy weight is different but I wasn't aware that fluid ounces referred to volume instead of weight.

[Unregistered]

Re: fluid ounces to pounds

how meney pounds is 225 ounces

[JohnS]

Re: fluid ounces to pounds

how meney pounds is 225 ounces

In the avoirdupois system, 1 av lb = 16 av oz,
this is probably the answer to your question, as it is the pound and ounce for weighing most materials. The "avoirdupois" or its symbol is customarily omitted. So 225 oz is 14 lb 1 oz

However in the troy system (used for precious metals)
1 troy lb = 12 troy oz
(and both the ounces and pounds are a different size from avoirdupois.

If you meant fluid ounces, that opens a whole other can of worms as you need to know the density of the liquid.

[Unregistered]

Re: fluid ounces to pounds

this is in cooking 25fl oz to lbs

[JohnS]

Re: fluid ounces to pounds

this is in cooking 25fl oz to lbs

25 fl oz of what? Different liquids have different densities.

[Unregistered]

Re: fluid ounces to pounds

how many fluid ounces are in 12 pounds of aluminum?

[Unregistered]

Re: fluid ounces to pounds

25 fl oz of what? Different liquids have different densities.

Hi John,
The liquid density is .885g/ml and you purchased it by the pound. How would you figure the cost per oz?

[JohnS]

Re: fluid ounces to pounds

Hi John,
The liquid density is .885g/ml and you purchased it by the pound. How would you figure the cost per oz?

1 lb x 453.59237 g/lb x 1 mL/0.885 g x 128 fl oz/3785.411784 mL = 17.331 fl oz

Multiply $/lb x 1 lb/17.331 fl oz for price per fl oz.

[Unregistered]

Re: fluid ounces to pounds

I have a recipe that calls for 61bs. 9 oz. of tomato puree. How many oz. would that be?