# How to Calculate Hourly Production Target

In apparel production, you may often need to calculate hourly production target for a given style for setting up production target and production planning. The hourly production target is calculated for individual operators as well as for a line as needed.

1. How to calculate hourly production target for an individual operation?
2. How to calculate hourly production target for a production line?

Hourly production target calculation is a part of an operation bulletin (OB) preparation and daily production report. In an operation bulletin production target is calculated for each operations.

Following formula is used to calculate hourly target.

Hourly production target = (60 / Operation SAM)

An hour is equal to 60 minutes. Divide 60 minutes by the operation SAM to claculate hourly production target.

The end result of this calculation tells you the number of pieces can be produced per hour, which is the hourly production target for the selected operation.

Let’s take some examples

Example-1: When SAM of an operation is 0.5 minute. Hourly production target would be
=(60/0.50) =120 pieces

Example-2: When operation is 1.2 minutes the hourly production target would be
= 60/1.2 = 50 pieces

Note: This hourly production target is calculated at 100% efficiency (of operation SAM). In case you want to plan hourly production target at particular percentage, multiply the above by individual operator efficiency.

Let’s say skill level of that operator is 80% efficiency, in that case production target would be

= (60/0.50)*80% =120*80% = 96 pieces

The information you need for calculating hourly production target are -
1. Standard time (SAM) of the operation
2. Average efficiency of the line (Or individual efficiency of the specific operator)

### Calculation of Hourly Production Target of a Production Line

On the other hand for calculating hourly production target for a production line use the following formula

Hourly Production Target of a line =((60 * No. of operators working in a line * Line efficiency %) /(Garment SAM)

If you need to calculate daily production target of a line, just multiply the hourly line target by shift hours. The formula will be as following.

Daily Production Target of a line =((Shift time x 60 x No. of operators working in a line x Line efficiency %) /(Garment SAM)

An Example:

Number of operators working in a line : 30
Daily shift Hours : 8 Hours
Garment SAM : 20 Minutes
Line Efficiency : 80%

Production target of this line (Daily) = (8 X 60 X 30 X80%)/20
=(480 x 30 x 80) / (100 x 20)
= 576 units

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Updated on: 18th Nov 2023
Published: 23 Dec 2016

### Prasanta Sarkar

Prasanta Sarkar is a textile engineer and a postgraduate in fashion technology from NIFT, New Delhi, India. He has authored 6 books in the field of garment manufacturing technology, garment business setup, and industrial engineering. He loves writing how-to guide articles in the fashion industry niche. He has been working in the apparel manufacturing industry since 2006. He has visited garment factories in many countries and implemented process improvement projects in numerous garment units in different continents including Asia, Europe, and South Africa. He is the founder and editor of the Online Clothing Study Blog. He lives in India. linkedin