Takt time sets the rhythm of a process. It is not a measure of how fast a line can run, but of how fast it should run: producing faster builds inventory, producing slower creates backlog. The word comes from the German Takt, meaning beat or pulse.
Calculation
Divide the available production time in a period by the customer demand for that same period.
Takt time = available production time ÷ customer demand
A shift of 450 available minutes against demand of 90 units gives a takt time of 5 minutes: one unit must leave the process every five minutes.
Available time means time genuinely open for production. Planned breaks, scheduled maintenance and changeovers are excluded; unplanned downtime is not, since a process that breaks down still has to meet the same demand.
Takt time, cycle time and lead time
These three are routinely confused.
- Takt time is set by the customer. It is a requirement, not an observation.
- Cycle time is set by the process — how long one unit actually takes at a given station.
- Lead time is what the customer experiences, from order to delivery.
A balanced process has cycle times at or just below takt. Where a station’s cycle time exceeds takt it becomes the bottleneck and sets the pace of the whole line.
| Measure | Set by | Answers |
|---|---|---|
| Takt time | The customer | How fast should we produce? |
| Cycle time | The process | How fast do we produce? |
| Lead time | The whole flow | How long does the customer wait? |
Using it
Takt time is the reference against which a line is balanced. Plotting each station’s cycle time against the takt line shows immediately which stations have slack and which constrain output — the basis for redistributing work between them.
It also converts a demand change into an operational one. If demand rises and takt time falls, the question becomes concrete: which stations now exceed it, and what has to move?
Limits
Takt time assumes demand that is stable enough to average over the period chosen. Where demand is highly variable, a takt calculated on a monthly average will be wrong on most individual days, and the process needs buffering or flexible capacity rather than a single tighter beat.
See also
Cycle time · Lead time · Line balancing · Value Stream Mapping