Help with calculating the average boil gravity

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BrewnWKopperKat

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I'll see if I can find the BBR podcast when they did the lab measurement of Hop Sampler IBUs. It's interesting that, over time, they ended up using something similar to (if the the same as) HBUs (AA x weight) for as a numerical value for bitterness.
 
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VikeMan

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Ok. That calculator is giving you an "Estimated Boil Gravity" (the answer in green at the bottom) which is the gravity you would need at your specified pre-boil size in order to reach the "Target Original Gravity" specified at the specified post-boil size.

Personally, I would have labeled it with something more clear.
 
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