Takt time is the rate at which a line must finish garments to meet the order. The word comes from the German Takt, meaning a beat or pulse. If a line must deliver 480 pieces in a 480-minute day, it must finish one piece every minute. That one minute is the takt time.
The formula#
- Available working time: planned working time in the period, excluding breaks.
- Required output: pieces needed in the same period to meet the delivery.
Takt time is set by demand, not by the line. It tells you what pace is needed; it does not tell you what pace the line can achieve.
Worked example#
An order needs 9,000 pieces in 10 working days. The line works 8 hours a day with a 30-minute break inside that, so 450 minutes are available each day.
- Required per day: 9,000 / 10 = 900 pieces
- Takt time: 450 / 900 = 0.50 min per piece (30 seconds)
Every station on the line must be able to complete its work for one garment in 30 seconds or less, or the line will fall behind.
Takt time, cycle time and pitch time#
| Term | What it is | Set by |
|---|---|---|
| Takt time | Required pace to meet demand | Customer demand and available time |
| Cycle time | Actual time a station takes per piece | The method, operator and machine |
| Pitch time (line balancing) | Average work per operator: garment SMV / operators | The garment SMV and line size |
A line meets demand when every station's cycle time is at or below takt time. See pitch time for the two ways pitch time is used.
Using takt time to size a line#
If the garment SMV and takt time are known, the minimum number of operators at 100% efficiency is:
For a garment with SMV 14.0 and a takt time of 0.50 minutes: 14.0 / 0.50 = 28 operators at standard pace. At a realistic efficiency of 70%, the line needs 28 / 0.70 = 40 operators.
The manpower requirement calculator does this with efficiency and absenteeism.
Takt time in practice#
- Short takt times (a few seconds) mean many operators each doing very small operations. Handling time becomes a large part of the work.
- Long takt times suit modular or cell-based lines where operators perform several operations.
- Changing demand means changing takt time. If the order quantity drops, the line can run with fewer operators rather than building excess stock.
- Visual pacing: some factories show takt time as an hourly target on a board. An hourly target of 120 pieces is a takt time of 0.5 minutes.
Common mistakes#
- Using total shift time instead of available time after breaks.
- Confusing takt with cycle time. Takt is what is needed; cycle time is what happens.
- Planning to takt at 100% efficiency and then missing delivery when real losses occur.
Use the takt time calculator for quick checks, and see line balancing for dividing the work so each station meets the takt.
Related guides#
- Lean manufacturing in garments: the lean system takt time comes from.
- Bottleneck analysis: the stations that cannot keep up with takt.
- Production target calculation: expressing takt as an hourly target on the floor.
- WIP control: keeping work flowing at the takt pace.
Frequently asked questions#
Is takt time used for the whole factory or one line? Both. Factory takt comes from total demand and total available time; line takt comes from the orders loaded on that line.
Should takt time change during an order? If the delivery plan or working time changes, recalculate takt and adjust manpower or overtime.