Coffee, Tea, Roasting & Dry Goods Processing worked example
Green Bean Shrink at 12% target green bean shrink: a worked example
Suppose target green bean shrink falls to 12%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate green bean shrink from weight lost between green coffee receiving, roasting, and finished roasted inventory.
The inputs for this scenario
- Green coffee weight lost during roast: 165 lb (held at the documented default)
- Green coffee starting weight: 1,000 lb (held at the documented default)
- Target green bean shrink: 12 % (the input this scenario stresses; the baseline uses 16)
Working through the calculation
- The calculation starts from the formula this tool documents: Green Bean Shrink = green coffee shrink weight ÷ green coffee starting weight × 100.
- Effective throughput works out to 0.02 % at these inputs, and this is the headline figure for the scenario.
- Raw throughput works out to 0.17 % at these inputs.
- Efficiency works out to 12 % at these inputs.
- Runtime works out to 1,000 hr at these inputs.
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 25% below the baseline at 0.02 %.
- 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. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.
Results at a glance
- Effective throughput: 0.02 % (headline result)
- Raw throughput: 0.17 %
- Efficiency: 12 %
- Runtime: 1,000 hr
Run it with your numbers
- To rerun this with your own numbers, open the live Green Bean Shrink calculator, set target green bean shrink to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.