Calculator Inputs
Use the responsive grid below. It shows three columns on large screens, two on medium screens, and one on mobile.
Formula Used
(Batch Size × Processing Time Per Unit) ÷ Parallel Units
Ideal Run Time ÷ (Efficiency ÷ 100)
Adjusted Run Time × (Overlap % ÷ 100)
Adjusted Run Time − Overlap Credit
Setup + Queue + Inspection + Transfer + Wait + Net Run Time
Batch Size ÷ (Total Batch Cycle Time in Hours)
How to Use This Calculator
- Choose one time unit for all time inputs.
- Enter batch size, setup time, and processing time per unit.
- Add queue, inspection, transfer, and wait delays for realistic planning.
- Set parallel units, efficiency, and overlap credit to model capacity accurately.
- Press the calculate button to view results above the form, inspect the chart, and export your summary as CSV or PDF.
Example Data Table
| Example Input | Value | Unit / Note |
|---|---|---|
| Batch Size | 120 | units |
| Setup Time | 35 | minutes |
| Processing Time Per Unit | 1.5 | minutes |
| Queue Time | 20 | minutes |
| Inspection Time | 12 | minutes |
| Transfer Time | 15 | minutes |
| Wait Time | 18 | minutes |
| Parallel Units | 3 | simultaneous resources |
| Efficiency | 90 | percent |
| Overlap Credit | 10 | percent |
| Number of Batches | 4 | planning horizon |
| Example Output | Result |
|---|---|
| Total Batch Cycle Time | 160 minutes |
| Cycle Time Per Unit | 1.3333 minutes |
| Throughput | 45 units per hour |
| Multi-Batch Horizon | 640 minutes |
FAQs
1. What is batch cycle time?
Batch cycle time is the total time required for one batch to move through setup, processing, inspection, transfer, and delay stages until completion.
2. How is batch cycle time different from lead time?
Lead time usually covers the broader customer-facing timeline. Batch cycle time focuses on the operational duration needed to finish the batch itself.
3. Why does efficiency matter here?
Efficiency converts theoretical run time into realistic run time. Lower efficiency increases effective processing duration and reduces throughput.
4. What does overlap credit represent?
Overlap credit estimates activities that can happen at the same time, such as staging or parallel coordination, which reduces net cycle time.
5. Can I compare different batch sizes?
Yes. Change batch size while keeping the other assumptions fixed. This helps you see how setup spreads across units and where delays start dominating.
6. Why can throughput fall even when run time looks similar?
Throughput depends on total cycle time, not just processing time. Queue, inspection, transfer, and waiting delays can significantly reduce hourly output.
7. Should I include queue time?
Include queue time when you want realistic operational planning. Exclude it only when measuring a narrow internal processing benchmark.
8. Can service teams use this calculator too?
Yes. Replace machine times with task handling, review, handoff, and waiting times. It also works well for labs and back-office teams.