Takt Time

Takt Time comes from the German word 'takt' (musical beat, rhythm) and expresses the synchronisation of a production system with the customer demand rhythm. Its calculation is straightforward: Takt = Net Working Time / Customer Demand Quantity (over the same period). For example, in an 8-hour shift (480 minutes) with 96 units of demand, Takt = 480/96 = 5 minutes/unit. Meaning: on average one unit must come off the line every 5 minutes. Takt is conceptually distinct from cycle time and throughput: cycle time is the actual processing time at a station, throughput is the actual output rate of the system, while takt is the target rhythm imposed by the customer. The core lean discipline: every station's cycle time must be less than or equal to takt. Otherwise a bottleneck and delivery delays form. Takt is the fundamental input to the assembly line balancing problem — assigning work to stations is exactly distributing capacity under the takt ceiling. A takt–cycle-time chart ('Yamazumi chart') visualises in SMBs how work is distributed. When a line designed to takt is balanced, residual capacity (idle time) surfaces; this capacity is read as 'visible waste' for kaizen improvements directly from the Yamazumi chart. If demand is seasonal, takt is recomputed dynamically (e.g., high-season takt = 4 min, low-season = 7 min). References: Rother and Shook 'Learning to See' (1999); Ohno (1988); the ISO 22400-2 standard.