How to Production Capacity Calculation of a Garment Factory?

Production Capacity Calculation of a Garment Factory

Written by: Imran Hosain

Date: February 4, 2025

1. Introduction

Production capacity calculation is essential for a garment factory to plan its operations efficiently and meet order deadlines.

2. Formula for Production Capacity

The production capacity per line per day is calculated using the formula:

            Capacity per line per day = (No. of MP × Working hours × Efficiency) ÷ SAM
        

• No. of MP: Total number of manpower (operators) in a line
• Working hours: Total hours per shift/day
• Efficiency: Line efficiency in percentage
• SAM (Standard Allowed Minutes): Time required to complete one unit of garment

3. Example Calculation

Assume the following:

• No. of MP in a line = 20
• Working hours per day = 8
• Line efficiency = 75% (0.75 in decimal)
• SAM of the garment = 20 minutes

Now, calculating daily production capacity:

            Capacity per line per day = (20 × 8 × 60 × 0.75) ÷ 20
                                     = (9600 × 0.75) ÷ 20
                                     = 7200 ÷ 20
                                     = 360 pieces per day
        

For a monthly capacity (assuming 26 working days):

            360 × 26 = 9,360 pieces per month
        

4. Factory Capacity (Multiple Lines)

If the factory has 5 lines:

Lines	Daily Capacity	Monthly Capacity
1	360	9,360
5	1,800	46,800

5. Factors Affecting Production Capacity

• Operator Skill Level: More skilled workers improve efficiency.
• Machine Efficiency: Well-maintained machines perform better.
• Product Complexity: Higher SAM garments reduce output.
• Line Balancing: Proper task distribution optimizes productivity.
• Working Environment: Better conditions lead to higher efficiency.

6. Conclusion

By calculating production capacity accurately, garment factories can optimize workflow, improve efficiency, and meet customer demands effectively.

Imran Hosain

Senior Blogger

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