Takt Time

In plain English

Takt time is the heartbeat of a production line. If customers want 420 parts a day and you have 420 minutes of working time, you must finish one part every minute — no faster (you would build stock nobody has ordered) and no slower (you would miss deliveries). That one minute is the takt time.

Technical definition

Takt time is the available production time in a period divided by the customer demand in the same period. It is a target pace set by demand, not a property of the machines. The word “Takt” comes from German, meaning a beat or rhythm.

How it works and where it is used

Takt time is compared with the cycle time of each process step — the time it actually takes to complete one unit. Every step must have a cycle time at or below takt time; a step above takt is a bottleneck. In line balancing, work is shared between stations so that each station’s work content fits within the takt time, and the minimum number of stations is the total work content divided by takt.

Formula

Takt time = available working time ÷ customer demand

Available time = shift time minus planned breaks, meetings and similar planned stops (per day or per shift), with demand for the same period.

Worked example

One 8-hour shift with 60 minutes of breaks gives 420 minutes = 25 200 s. Demand is 420 units per day.

Takt time = 25 200 ÷ 420 = 60 s per unit. If the slowest station takes 66 s, it cannot keep up: the work must be rebalanced, the process improved, or more time made available.

In the workshop and in practice

Takt time is posted on lines as the target pace, used to size the number of operators and stations, and recalculated when demand changes. It is a central idea in lean manufacturing and value-stream mapping.

Common mistakes and misconceptions

• Confusing takt with cycle time. Takt comes from demand; cycle time comes from the process.
• Subtracting unplanned downtime. Available time excludes planned stops only; unplanned losses are handled through OEE and by running slightly faster than takt (planned cycle time).
• Mixing periods. Use demand and available time for the same day, shift or week.

Related calculators

• Takt Time Calculator — The pace of production needed to meet customer demand.
• Assembly Line Balancing Calculator — Cycle time, minimum workstations, line efficiency and balance delay for an assembly line.
• Cycle Time Calculator — Observed average time per unit from operating time and units completed.
• Cycle Time & Production Capacity Calculator — How many parts per hour, day and week a machine or line can make.

Related topics

• Overall Equipment Effectiveness (OEE) — A measure of how much of the planned time a machine spends making good parts at full speed.

References

• Rother and Shook, Learning to See: Value Stream Mapping to Add Value and Eliminate Muda, Lean Enterprise Institute
• Monden, Toyota Production System: An Integrated Approach to Just-in-Time
• Lean Enterprise Institute, Lean Lexicon