Coffee, Tea, Roasting & Dry Goods Processing worked example
Green Bean Shrink at 18% target green bean shrink: a worked example
Push target green bean shrink up to 18% and the picture changes. This example computes every intermediate figure at that operating point. monitoring green coffee shrink and inventory variance
The inputs for this scenario
- Green coffee weight lost during roast: 165 lb (unchanged)
- Green coffee starting weight: 1,000 lb (unchanged)
- Target green bean shrink: 18 % (raised for this scenario; the documented default is 16)
Working through the calculation
- Applying the documented formula (Green Bean Shrink = green coffee shrink weight ÷ green coffee starting weight × 100) to the inputs above produces each figure below.
- At this operating point the engine returns 0.03 % for effective throughput, the number this scenario is built around.
- At this operating point the engine returns 0.17 % for raw throughput.
- At this operating point the engine returns 18 % for efficiency.
- At this operating point the engine returns 1,000 hr for runtime.
How this compares with the baseline
- Against the tool's baseline example, where target green bean shrink sits at 16% and the headline result is 0.03 %, this scenario comes in 12.5% above the baseline at 0.03 %.
- It computes shrink as green weight lost divided by green starting weight times 100, and reports the gap between your result and your target shrink. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.
Results at a glance
- Effective throughput: 0.03 % (headline result)
- Raw throughput: 0.17 %
- Efficiency: 18 %
- Runtime: 1,000 hr
Run it with your numbers
- Every input above is editable in the live Green Bean Shrink calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.