Coffee, Tea, Roasting & Dry Goods Processing worked example
Roast Batch Yield at 97% target roast yield: a worked example
What does the result look like when target roast yield reaches 97%? The full calculation is worked below with real intermediate numbers. reviewing roast loss, green-to-roasted yield, and batch cost impact
The inputs for this scenario
- Roasted coffee output (out of roaster): 84 lb (unchanged)
- Green coffee charged to drum: 100 lb (unchanged)
- Target roast yield: 97 % (raised for this scenario; the documented default is 84)
Working through the calculation
- Applying the documented formula (Roast Batch Yield = roasted coffee output ÷ green coffee charged × 100) to the inputs above produces each figure below.
- At this operating point the engine returns 84 % for roast batch yield, the number this scenario is built around.
- At this operating point the engine returns 13 points for roast batch yield gap to target.
- At this operating point the engine returns 84 count for roasted coffee output.
- At this operating point the engine returns 100 count for green coffee charged.
How this compares with the baseline
- Against the tool's baseline example, where target roast yield sits at 84% and the headline result is 84 %, this scenario lands almost exactly on the baseline at 84 %.
- A figure at this level is achievable when target roast yield is genuinely sustained, not just peaked for a shift. Yield alone does not tell you cup quality or roast level — a perfect yield number can still sit on an underdeveloped or scorched roast, so pair it with development time and a taste check.
Results at a glance
- roast batch yield: 84 % (headline result)
- roast batch yield gap to target: 13 points
- roasted coffee output: 84 count
- green coffee charged: 100 count
Run it with your numbers
- Every input above is editable in the live Roast Batch Yield calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.