Questions and answers on how to convert things from one unit or system to another

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Thu May 05, 2005 7:04 pm

Is there a magic formula for converting lbs of something to water gallons? I do not have to be accurate to the Nth degree, just in the ballpark.

Examples
How many water gallons is 600 lbs of R-22 refrigerant?
How many water gallons is 20 lbs of propane (blowtorch tanks)?
Etc. etc.

I need to do this for reporting requirements. The form specifies flammable gas and non-flammable gas amounts in "water gallon capacities" so I need to know how much I have in "water gallon capacity" to find out if I'm required to report it or not.

Thanks for any help

Thu May 05, 2005 7:35 pm

The magic formula is called "density." It is a property of the material, in general is different for each material, and you have to look it up in a reference book. The Handbook of Chemistry and Physics is a good place to look but there are other references.

If you divide mass by density, you get volume. If you multiply volume by density, you get mass.

More info

List of all units you can convert online
Metric conversion
Convert pounds to gallons
Convert grams to cups
Grams to milliliters
Imperial vs US Customary
History of measurement