Production calculator
Set daily and hourly sewing line targets from manpower, working hours, garment SMV and planned efficiency, with targets at 100% for comparison.
Daily target
1,040pcs
Targets are rounded down to whole pieces so the line is never set a fraction it cannot finish.
Target = manpower × working minutes × efficiency / SMV
| Symbol | Meaning | Unit |
|---|---|---|
| M | Manpower | persons |
| T | Working minutes | min |
| η | Planned efficiency as a fraction | - |
Target per hour at 100% = 60 × manpower / SMV
Available minutes = manpower × working minutes. Earned minutes at the planned efficiency = available × efficiency. Daily target = earned minutes / SMV, rounded down. The hourly target is the daily target divided by working hours. Targets at 100% are shown for reference.
See production target calculation for learning curve targets and operator targets.
Defaults: 40 people, 8 hours, SMV 12.0, planned efficiency 65%.
Show the hourly target at the line and record actual output against it each hour with the reason for any shortfall. The hourly production report is set up for this.
A target should be a whole number the line can reach. Rounding down avoids setting a target slightly above what the plan supports.
The efficiency the line has achieved on similar styles, adjusted for the learning curve. Do not plan at 100%.
How to set an hourly and daily production target from SMV, manpower, working minutes and planned efficiency. Worked examples for new and running styles, learning curve targets and why a target at 100% efficiency is not a real target.
Line efficiency compares the minutes a sewing line earned with the minutes it had. Learn the formula, work through examples, understand what drives efficiency up and down, and avoid the reporting mistakes that make the number meaningless.
How to calculate sewing capacity in available minutes and in pieces, for a line or a whole factory, and how to use it to check whether an order fits. Includes efficiency, absenteeism, working days and a full worked example.
Takt time is the pace at which garments must be finished to meet demand. How to calculate it, how it differs from cycle time and pitch time, and how to use it to size and balance a sewing line.