Rice Mill Capacity Calculator
Calculate the approximate nominal rice mill capacity required to process a target amount of paddy each day.
Utilization is the effective share of scheduled time. For example, 80% allows for feed interruptions and downtime.
Paddy input, not finished rice output
- Recommended Nominal Range
- 1.72–1.95 ton/h
- Daily Throughput
- 10 ton/day
- Effective Operating Hours
- 6.4 h/day
The buffer adds 10–25% above the minimum. The buffer is an engineering planning estimate, not a machine guarantee. Check all stages of the line.
Nominal capacity = daily paddy weight ÷ (operating hours × utilization ÷ 100). Recommended Nominal Range = calculated capacity × 1.10 to 1.25.
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What the Capacity Means
The result is nominal hourly paddy-input capacity, not finished white rice output. Daily Throughput is the target paddy input entered above. Effective Operating Hours equal scheduled hours multiplied by utilization.
For 10 tons/day, 8 hours/day and 80% utilization, effective operating time is 6.4 hours and minimum nominal capacity is 1.5625 tons/hour, displayed as 1.56 tons/hour.
Recommended Nominal Range
The lower bound adds 10% and the upper bound adds 25% to calculated capacity. For the example above, the range is 1.72–1.95 tons/hour. The buffer is an engineering planning estimate, not a machine guarantee.
Use the Estimate Carefully
Actual capacity varies with grain condition, moisture content, machine design, operator settings, wear and upstream/downstream equipment. Do not select a machine using calculated capacity alone.
Check the input material and test conditions behind each rated capacity. A whitener rated for brown rice cannot be compared directly to a cleaner rated for paddy without converting to a common basis.
Sources & Technical References
References support general principles. Machine-specific settings require the matching manufacturer manual.
- Commercial rice milling systems ↗IRRI Rice Knowledge Bank · Process-stage definitions and line arrangement.