calculating plato - Home Brew Forums

 Home Brew Forums > calculating plato

09-16-2011, 01:59 PM   #1
indianaroller
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Apr 2008
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I'm unsure how to calculate degrees plato if I have a known volume of water in liters and a known amount of extract in kilograms. Could someone please help me out?

09-16-2011, 03:32 PM   #2
BBL_Brewer

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Feb 2011
Kokomo, IN
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If you want to calculate plato before you add the extract to the water, then you need to know how much gravity your extract will contribute. For instance, say your extract contributes 40 points per pound per gallon. This means that 1 lb dissolved in 1 gallon of water will yeild a gravity of 1.040. Once you know what your gravity will be degrees plato is easy. Lets say your gravity is actually 1.040. Degrees plato = 40/4 = 10. If the gravity is 1.055, degrees plato = 55/4 = 13.75. In your case, you'll have to convert liters to gallons and kilograms to pounds. I use a handy conversion calculator for such things. http://www.onlineconversion.com/
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09-17-2011, 03:17 AM   #3
indianaroller
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Apr 2008
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Well, I'm having someone write me a custom brewing program so I think I want the formula to look like this - Plato= Malt(kg) X Extract Potential % X Efficiency % / Liters. This makes sense since plato is the weight of sucrose/weight of water. But this doesn't seem to be the case when comparing that to what BeerSmith gives me. I guess I just don't get it, but do you see what I want to do?

09-17-2011, 03:19 AM   #4
logdrum
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Aug 2010
North Olmsted, Ohio
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You don't need the efficiency factor w extract

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