Coffee roast weight loss: green to roasted yield table
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Coffee loses weight as it roasts, mostly water. Roast weight loss is the drop in weight from green to roasted, as a percentage. The tables are plain arithmetic: roasted weight = green weight × (1 − loss).
| Green weight | 12% loss | 14% loss | 15% loss | 16% loss | 18% loss | 20% loss |
|---|---|---|---|---|---|---|
| 100 g green | 88 g | 86 g | 85 g | 84 g | 82 g | 80 g |
| 225 g green | 198 g | 194 g | 191 g | 189 g | 184 g | 180 g |
| 250 g green | 220 g | 215 g | 212 g | 210 g | 205 g | 200 g |
| 454 g green | 400 g | 390 g | 386 g | 381 g | 372 g | 363 g |
| 500 g green | 440 g | 430 g | 425 g | 420 g | 410 g | 400 g |
| 1000 g green | 880 g | 860 g | 850 g | 840 g | 820 g | 800 g |
Green coffee needed for one pound (454 g) roasted
| 12% loss | 14% loss | 15% loss | 16% loss | 18% loss | 20% loss | |
|---|---|---|---|---|---|---|
| Green needed | 516 g | 528 g | 534 g | 540 g | 554 g | 568 g |
Arithmetic only; measure your own roaster's loss.
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