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.

In this article, I will show you

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

1. Calculation of Hourly Production Target of an Operator

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. And then the operation wise production target is converted into targetfor individual machine operators.   

Following formula is used to calculate hourly target at100% performance rate.

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) x 80% =120 x 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)

You can also use our online calculator for hourly production target calculation.

Application of the individual operator and operation target data

Hourly production data for each operation is used in hourly production report. In the hourly production report, factories see hourly actual production quantity and they view hourly target. So that line supervisor can compare actual production versus target production for each hour. 

  

2. 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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Related Question: 

How to Calculate Hourly and Daily Target When Line Works at 45% & 60% Efficiency?

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Updated on: 18th Nov 2023

Published: 23 Dec 2016