I may have posted this before, but I find the area and volume
pages linked to the top-level index at the URL below most
convenient for this kind of thing. That was how I got from 1.5
pints to 24 US fluid ounces, and from .24 fluid ounces to 1/2
tablespoon (actually .48 tablespoon, but I rounded up to the
nearest thing to easily estimate with an ordinary measuring
spoon).
You would plug in your actual pints per acre to get how many
fluid ounces of concentrate you need per acre, divide by 100
to get from fluid ounces of concentrate per 100 gallons to fluid
ounces of concentrate per gallon, and then convert fluid ounces
to tablespoons to get tablespoons per gallon. (Both fluid ounces
and tablespoons are volume measurements.)
The area conversion is easier, just divide square feet per acre
by 100 (for 100 gallons to cover an acre down to whatever
a gallon should cover).
http://www.sciencemadesimple.com/conversions.html
To convert pounds of concentrate per acre instead of pints,
still mixing into the same 100 gallons of water for application,
you need a scale, because the final measurement is going
to be ounces (weight, not fluid ounces) or grams per gallon.
(To convert to dry tablespoons, you would have to know either
how much volume a pound of the stuff takes up or how much
a dry tablespoon of the stuff weighs.)
If it is 1 lb. per acre, mixed into 100 gallons of water, a pound
is 16 ounces. So per gallon, it would be 16/100 = .16 ounces,
and it would still cover 43560/100 square feet = 435.6 sq. ft.
.16 ounces is 4.54 grams if your scale reads in grams, so that
would be about 4 and a half grams per gallon, still covering
the same area of a little more than 400 sq. ft.