Yield Factor Calculator Parchment Coffee
Record your sample hulling and get the yield factor, the estimated excelso for the lot, and the suggested price per load. With the full physical analysis if you need it.
Calculation mode
Sample data
Settlement base
The official FNC base is 94 since April 2024; in practice, most of the market settles on 92.7.
Lot data (optional)
* Exact premiums and discounts per factor point vary by buyer and market. Use these results as a reference and always verify the conditions at your buying point.
Result
Complete the sample data to see the result.
How this calculator works
The calculator applies the factor formula to your hulling data: factor = 70 × sample weight in grams ÷ grams of sound bean. With the standard 250 g sample it is equivalent to 17,500 ÷ grams of sound bean.
In quick mode you only need the sample weight and the sound bean already weighed. In full physical analysis you record the total bean after hulling and each defect separately (lower-grade, borer damage, hulled bean, guava, black and sour), and the tool derives the sound bean and shows the sample composition.
Why moisture is handled separately
The factor is measured on dry parchment coffee, with moisture between 10 % and 12 %. Moisture is not part of the factor formula: it defines the basis on which everything else settles. If the coffee arrives with high moisture, the drying loss is discounted first, and only then does calculating the factor make sense. Calculating it on wet coffee distorts everything that follows.
How to interpret the result
The lower the factor, the better the lot and the more excelso each load yields. The official base of the National Federation of Coffee Growers is factor 94, effective since April 1, 2024, although in practice most market settlements use a base of 92.7. A factor around 92 or less indicates an outstanding lot; near 100, a low-quality lot. Below the base it settles with a premium, above it with a discount.
Want the full step by step, the most common mistakes and the connection to margin? Read the complete yield factor guide.
Want BeanFlux to calculate this automatically on every purchase?
In BeanFlux, the grader records the physical analysis and the factor per lot in the same reception flow. No spreadsheets, no manual errors: the adjusted price and settlement ready to sign in seconds.
See the demoAnother tool that may help you:
Coffee Purchase and Sale Margin Calculator