Grain Milling, Dry Bulk Food & Feed Handling calculator
Yield Loss Calculator
Calculate milling or feed production yield loss by comparing lost product weight with total input or production weight and a target loss rate. Use it when production or quality needs to quantify losses from screenings, fines, dust, spillage, rework, rejected feed, off-spec flour, or handling shrink.
What this calculator does
- Calculate milling or feed production yield loss by comparing lost product weight with total input or production weight and a target loss rate.
- Use it when production or quality needs to quantify losses from screenings, fines, dust, spillage, rework, rejected feed, off-spec flour, or handling shrink.
- Measures product loss as a percentage of the material basis for the run.
Formula used
- Yield loss rate = lost product weight ÷ total input or production weight × 100
- Yield loss gap to target = target yield loss - yield loss rate
Inputs explained
- Lost product weight: Enter screenings, dust, fines, spillage, rejects, off-spec material, or other product loss measured in the run.
- Total input or production weight: Use grain, ingredient, flour, meal, feed, or pellet weight before subtracting the measured loss.
- Target yield loss: Use the expected loss from standards, quote assumptions, plant KPI, or customer/product requirement.
How to use the result
- Use for extraction reviews, shrink investigations, cost variance, rework tracking, and process improvement.
- This calculator is an estimating and planning tool. Results can change with grain type, commodity grade, test weight, bulk density, moisture percentage, temperature, fines content, particle size, screen condition, hammer or roller wear, mill gap, aspiration, dust load, bin geometry, hopper angle, angle of repose, bridging or ratholing, conveyor loading, belt speed, screw fill, bucket spacing, pneumatic conveying velocity, mixer fill level, ingredient scale accuracy, bag weight, pallet pattern, labor coverage, sanitation requirements, allergen controls, rework policy, shrink history, utility rates, and actual plant operating data. Validate food-safety, feed-safety, combustible-dust, structural, regulatory, and safety-critical decisions with qualified process, quality, maintenance, engineering, and EHS experts.
Common questions
- What information do I need before using the Yield Loss? Use lost product weight, total material weight, and target loss for the same run or reporting period.
- What does the result mean? The result shows yield loss percentage and the gap versus target.
- When is the result only an estimate? This calculator is an estimating and planning tool. Results can change with grain type, commodity grade, test weight, bulk density, moisture percentage, temperature, fines content, particle size, screen condition, hammer or roller wear, mill gap, aspiration, dust load, bin geometry, hopper angle, angle of repose, bridging or ratholing, conveyor loading, belt speed, screw fill, bucket spacing, pneumatic conveying velocity, mixer fill level, ingredient scale accuracy, bag weight, pallet pattern, labor coverage, sanitation requirements, allergen controls, rework policy, shrink history, utility rates, and actual plant operating data. Validate food-safety, feed-safety, combustible-dust, structural, regulatory, and safety-critical decisions with qualified process, quality, maintenance, engineering, and EHS experts.
- What decision can I make from the result? Use it to investigate dust, spillage, screen losses, off-spec material, or handling practices that reduce saleable yield.
Last reviewed 2026-05-12.