Rice Milling Yield Calculator
Estimate how a quantity of paddy may be divided into husk, bran, head rice and broken rice after milling. This is an estimation tool. Actual milling recovery depends on rice variety, moisture, grain quality and milling conditions.
Husk and bran are percentages of paddy input. Broken rice is a percentage of total milled rice, not paddy. Defaults are estimates, not guaranteed yields.
Head rice + broken rice
- Paddy Input
- 1,000 kg
- Total Milled Rice
- 700 kg
- Head Rice
- 630 kg
- Broken rice
- 70 kg
- Rice bran
- 100 kg
- Rice husk
- 200 kg
- Total accounted
- 1,000 kg
↓ 200 kg Husk + 100 kg Bran + 700 kg Milled Rice
↓ Milled Rice → 630 kg Head Rice + 70 kg Broken Rice
Husk = paddy × husk% ÷ 100. Bran = paddy × bran% ÷ 100. Total milled rice = paddy − husk − bran. Broken rice = total milled rice × broken% ÷ 100. Head rice = total milled rice − broken rice.
All weights use the same moisture basis. This simplified mass balance assumes no additional losses or moisture changes; balanced estimates do not prove actual recovery.
On this page
How to Read the Mass Balance
Husk and bran percentages use paddy input as the denominator. The broken rice percentage uses total milled rice as the denominator. Head rice is the remainder of milled rice after subtracting broken rice; it is not a separate input.
The default example divides 1000 kg paddy into 200 kg husk, 100 kg bran and 700 kg milled rice. Broken rice at 10% of milled rice gives 70 kg broken rice and 630 kg head rice. The mass balance is husk + bran + head rice + broken rice. Do not add total milled rice again.
Typical Composition Is a Reference
What This Model Leaves Out
This simplified calculation assumes a common moisture basis, no impurities and no additional process losses. Real batches may include moisture change, dust, rejected grains and uncollected material. Weigh each output stream to assess actual recovery and use a consistent grading definition for head rice.
Changing the weight unit converts the existing input and every output, preserving the physical quantity. One ton means one metric ton (1000 kg); pounds use 0.45359237 kg per lb.
Sources & Technical References
References support general principles. Machine-specific settings require the matching manufacturer manual.
- Milling and processing ↗IRRI Rice Knowledge Bank · General milling principles; not evidence for model-specific specifications.