Calculate of Overall Line Efficiency in Garments Industry?

Overall Line Efficiency is an essential and top used KPI in the garments industry. Before calculating it, we have to understand first what Overall Line Efficiency is?

Operators usually get 8 hours in a day of working. But the entire day, they cannot produce garments. Some time is spent as off standard activities and some are spent as idle time.

When calculating On standard Efficiency, all the time of off standard activities and lost time are deducted. But when we calculate Overall Efficiency, all of the time are included.

Overall Efficiency Calculation Procedure

To calculate overall Efficiency, following things have to keep in mind first.

✔ Total production produced by line

✔ Garments SAM of running style

✔ Total working hours of the line

✔ Total manpower attended in the line

When all of the above information is available, the following formula can calculate the overall Efficiency.

Overall Efficiency = (Total Production × Garments SAM )/(Total Working Hour × Total Manpower × 60) × 100%

For Example, A line produces 900 pieces of garments in 8 hours shift day.

Standard minute of this garment is 15 minutes and the Total no. of manpower (Operators + Helpers) is 25. 

So,

Overall Efficiency = (900 × 11 )/(8 × 30× 60) × 100% = 68.75%