How to calculate Operator Efficiency & Line Efficiency?
What is Efficiency?
We measure efficiency for better understanding about how efficiently an operator or a line are performed. By an efficiency report, one can easily find out where to improve. Is it achieve as of standard target or below standard? For better follow-up we should check on hourly basis.
Simply we can say - The ratio between output & input is called efficiency.
To measure a company's performance, the best way by measuring efficiency. For example, an efficient company will produce a greater number of quality products, with less waste and proper use of other resources during a given period than an inefficient company.
Simply we calculate Individual Efficiency like below :
Efficiency = (Output/Input)*100
For example: Target of an operation was 800 pcs but operator has done 600 pcs. Now calculate his/her efficiently.
So Efficiency =(600/800)*100
=.75*I 00
=75% ( As Efficiency expressed in percent.)
For check hourly efficiency of his/her then divide hourly produce qty by hourly target.
But in Standard way, Efficiency Formula is
Efficiency =(Total output hour ÷ Total Input hour)*100
Or Efficiency =(Standard Earned Hour ÷ Total Input Hour)*100
Total output hour/Standard earned hour = (Total Output in a day*Garments SMV)/60
( Here to convert the result to hour, it divide by 60).
& Allocated Hour or Input hour = Manpower * Working hour
For example: A production line produce 1200 pcs garments in 10 hours by 20 manpower. If garments SMV is 7.50 then calculate that line efficiency.
Here we know,
Output = 1200 pcs
SMV = 7.5
Manpower = 20
Working hour = 10
Now Total output hour/Standard earned hour = (1200*7.5)/60
=9000/60
=150 Hour
& Allocated Hour or Input hour = 20*10
= 200 Hour
So, Efficiency = (150 ÷ 200)*100
= .75*100
= 75%
Another way we calculate efficiency like below,
‘’Efficiency = (Total produce minute ÷ Total input minute)*100
=(Output*SMV*100) ÷(Manpower*Working hour*60)‘’
In the above formula, 60 is multiplied to convert hours into minutes and 100 is multiplied to express in percentage.In the first formula, as SMV in a minute so divide it by 60 to convert it hour( Standard Earned Hour).
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