Enter Manufacturing Inputs
Example Data Table
| Machine | Shift Hours | Shifts/Day | Work Days | Cycle Time | Performance | Quality | Good Output | OEE |
|---|---|---|---|---|---|---|---|---|
| CNC Line 1 | 8 | 2 | 22 | 45 sec | 92% | 97% | 21,429.50 units | 81.30% |
| Press Cell A | 10 | 2 | 24 | 30 sec | 88% | 95% | 45,979.20 units | 73.63% |
Formula Used
Planned Time = Shift Hours × 60 × Shifts per Day × Work Days
Available Time = Planned Time − Break Time
Stop Time = Maintenance + Setup + Downtime
Run Time = Available Time − Stop Time
Theoretical Capacity = Available Time ÷ Ideal Cycle Time × Units per Cycle
Effective Good Output = Run Time ÷ Ideal Cycle Time × Units per Cycle × Performance × Quality
Availability = Run Time ÷ Available Time
Utilization = Run Time ÷ Planned Time
OEE = Availability × Performance × Quality
Takt Time = Available Time in Seconds ÷ Demand
How to Use This Calculator
- Enter the machine or line name and the planning period.
- Fill in shift length, shifts per day, and working days.
- Add break time, planned maintenance, setup time, and expected downtime.
- Enter ideal cycle time and units produced per cycle.
- Provide expected performance rate and quality yield percentages.
- Enter demand for the same period, then press calculate.
- Review output, OEE, capacity gap, and takt time above the form.
- Download the calculated report as CSV or PDF when needed.
Frequently Asked Questions
1. What does machine capacity mean?
Machine capacity is the amount of output a machine can produce within a selected period after accounting for time, speed, and quality factors.
2. Why is theoretical capacity higher than good output?
Theoretical capacity assumes perfect running conditions. Good output includes real losses from downtime, speed reduction, and defects, so it is usually lower.
3. What is the difference between utilization and availability?
Availability compares run time to available production time after breaks. Utilization compares run time to all planned shift time, including breaks.
4. How does performance rate affect capacity?
Performance rate adjusts ideal output for speed losses. A lower performance percentage means the machine runs slower than its ideal cycle time.
5. Why include quality yield in the calculation?
Quality yield removes defective units from expected output. This makes the final capacity figure more useful for planning customer-ready production.
6. What is takt time used for?
Takt time shows the maximum time allowed per unit to meet demand. It helps compare customer needs against actual production pace.
7. Can this calculator be used for batch production?
Yes. Enter the number of units made per cycle or batch in the units-per-cycle field to model batch or multi-cavity production.
8. What does a negative capacity gap indicate?
A negative capacity gap means expected good output is below demand. You may need overtime, faster cycles, better uptime, or more equipment.