How do you calculate brewhouse yield?

Divide usable wort or wash collected by the planned cast-out volume and multiply by 100. Collecting 28.5 bbl against a planned 31 bbl gives 28.5 / 31 x 100 = 91.94%.

What is a good brewhouse yield?

Volume yield typically targets the low-to-mid 90s percent once deadspace and evaporation are dialed in. The example's 91.94% against a 92% target is essentially on plan, just 0.06 points short.

What does the yield gap to target tell me?

It is actual minus target. Here 91.94% - 92% = +0.06... actually -0.06 points, meaning the batch landed a hair under target. Small gaps like this are normal batch-to-batch noise; sustained negative gaps point to a real loss.

Is brewhouse yield the same as mash efficiency?

No. This volume-based yield tracks how much liquid you collected versus plan. Mash or extract efficiency measures how much sugar you pulled from the grain. You can hit volume yield while missing extract, so track both.

Why am I missing planned cast-out volume?

Common causes are higher-than-expected kettle evaporation, lauter/grain bed deadspace, incomplete runoff, transfer losses, or a miscalibrated sight glass. Trend the yield to separate a one-off from a systematic loss.

Does brewhouse yield apply to distilling wash?

Yes — substitute usable wash collected for wort. The same ratio tells a distiller how efficiently the mash and transfer delivered fermentable wash against the planned volume.

Beverage Brewing, Distilling & Fermentation calculator

Brewhouse Yield Calculator

Brewhouse yield measures how much usable wort or wash you actually collected against the volume the recipe planned to cast out — a direct read on how efficiently your mash, lauter, and knockout are converting grain and water into fermentable liquid. Brewers, distillers, and production planners watch it batch to batch because a drifting yield signals lauter problems, evaporation off-target, deadspace losses, or measurement error long before it shows up in finished volume. It matters because every lost barrel of wort is lost packaged product and wasted grain, water, and energy. Comparing yield to a target turns 'that batch felt short' into a number you can trend.

What this calculator does

Calculate brewhouse yield from collected wort or distiller's wash volume against the planned batch volume, with a target yield for production review.
a brewery, distillery, cider house, or fermented beverage plant needs to compare actual kettle or fermenter fill volume with the expected batch volume
It computes brewhouse yield as usable wort or wash collected divided by planned cast-out volume, expressed as a percentage, plus the gap to your target.

Formula used

Brewhouse yield = usable wort or wash collected ÷ planned cast-out volume × 100
Yield gap to target = brewhouse yield - target brewhouse yield

Inputs explained

Usable wort or wash collected:
Planned cast-out volume:
Target brewhouse yield:

How to use the result

Use it at knockout on every batch to verify collected volume against plan and to trend lauter and evaporation performance over time.
Volume yield alone ignores gravity — you can hit volume while missing extract — so pair it with a gravity or extract-efficiency check for the full picture.

Current U.S. benchmarks

Industrial natural gas averages $4.9 per Mcf (EIA, Apr 2026), down 7.7% from a year earlier, with industrial electricity at 8.66 cents per kWh. Process heating and refrigeration budgets track both.
The U.S. has 31,130 food manufacturing establishments employing about 1,707,316 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate brewhouse yield? Divide usable wort or wash collected by the planned cast-out volume and multiply by 100. Collecting 28.5 bbl against a planned 31 bbl gives 28.5 / 31 x 100 = 91.94%.
What is a good brewhouse yield? Volume yield typically targets the low-to-mid 90s percent once deadspace and evaporation are dialed in. The example's 91.94% against a 92% target is essentially on plan, just 0.06 points short.
What does the yield gap to target tell me? It is actual minus target. Here 91.94% - 92% = +0.06... actually -0.06 points, meaning the batch landed a hair under target. Small gaps like this are normal batch-to-batch noise; sustained negative gaps point to a real loss.
Is brewhouse yield the same as mash efficiency? No. This volume-based yield tracks how much liquid you collected versus plan. Mash or extract efficiency measures how much sugar you pulled from the grain. You can hit volume yield while missing extract, so track both.
Why am I missing planned cast-out volume? Common causes are higher-than-expected kettle evaporation, lauter/grain bed deadspace, incomplete runoff, transfer losses, or a miscalibrated sight glass. Trend the yield to separate a one-off from a systematic loss.

Last reviewed 2026-05-12.