Enter Production Data
Choose direct units analysis or rolled stage analysis.
Example Data Table
| Batch | Units Started | Good First Pass | Recovered Rework | Scrap | Downgraded Saleable | Overall Yield |
|---|---|---|---|---|---|---|
| Batch A | 10,000 | 8,700 | 700 | 450 | 100 | 95.00% |
| Batch B | 8,500 | 7,500 | 500 | 350 | 50 | 94.71% |
| Batch C | 12,000 | 10,900 | 600 | 420 | 40 | 95.33% |
Use these values to test the calculator and compare yield performance across manufacturing runs.
Formula Used
Overall Yield = (Final Saleable Units ÷ Units Started) × 100
Final Saleable Units = Good First Pass + Reworked Recovered + Saleable Downgraded
First Pass Yield = (Good First Pass ÷ Units Started) × 100
Defect Rate = ((Units Started − Good First Pass) ÷ Units Started) × 100
RTY = (Stage 1 Yield × Stage 2 Yield × ... × Stage n Yield) × 100
Expected Good Units = Units Started × RTY Decimal
Units-based mode is best for completed batch analysis. Rolled throughput mode is best for predicting cumulative yield across sequential processes.
How to Use This Calculator
- Select the calculation mode that matches your manufacturing review.
- For units mode, enter started units and all final outcome categories.
- Add cost and selling values to estimate financial impact.
- For rolled throughput mode, enter each stage yield percentage.
- Click the calculate button to display results above the form.
- Review yield, loss, recovery, and cost metrics.
- Use the CSV or PDF buttons to export result summaries.
Frequently Asked Questions
1. What is overall yield in manufacturing?
Overall yield measures the percentage of started units that become saleable output after normal processing, rework recovery, and acceptable downgraded disposition are considered.
2. How is overall yield different from first pass yield?
First pass yield counts only units that pass without rework. Overall yield includes saleable units recovered later, so it usually reports a higher percentage.
3. When should I use rolled throughput yield?
Use rolled throughput yield when your process has multiple sequential stages. It reveals the cumulative probability of a unit passing the full line.
4. Should downgraded units be counted as good output?
Yes, if downgraded units are still saleable and accepted by your quality policy. If they are unsellable, record them as loss instead.
5. Why does a high first pass yield still hide losses?
Because scrap, rework cost, and multi-stage losses can still reduce margin. Yield percentages alone do not show the full financial impact.
6. Can this calculator help reduce manufacturing cost?
Yes. It highlights scrap, rework, and cost-per-good-unit trends, which helps teams target bottlenecks, quality escapes, and poor process capability.
7. What inputs need the most accuracy?
Units started, first pass good units, rework recovery, and scrap quantities are most important. Incorrect classification can distort yield and cost conclusions.
8. Can I use this for daily, weekly, or batch reporting?
Yes. The calculator works for single batches, shifts, days, or weekly summaries as long as all outcome categories use the same reporting period.