Takt Time, Cycle Time & Little's Law Lead Time Calculator

The Toyota Production System: The Difference Between Takt Time and Cycle Time

Originating from the German musical word Takt (meaning 'beat' or 'pulse'), Takt Time is the pace at which a factory must produce parts to match customer demand:

• Takt Time (External): Set entirely by the customer; you cannot change Takt Time without changing shift hours or customer orders.

• Cycle Time (Internal): The actual time required for a machine or technician to perform a task.

• The Golden Rule of Lean: To prevent overproduction waste and backlog shortages, Process Cycle Time must be balanced just slightly below Takt Time (roughly 90%–95% of Takt).

How to Use This Calculator

Enter your Gross Shift Working Time (Hours / Shift) (e.g. 8.0), Planned Breaks & Lunch Downtime (Minutes / Shift) (e.g. 45), Customer Demand Requirement (Units / Shift) (e.g. 450 (Parts needed by customer)), Actual Process Cycle Time (Seconds / Unit) (e.g. 52.0 (Time for 1 operator/machine to complete 1 unit)), Work-In-Progress (WIP Units in Line) [for Little's Law] (e.g. 180), and Number of Parallel Operators / Workstations (e.g. 1). Results update instantly as you type — adjust any value to compare scenarios.

The Formula

Lean manufacturing Takt Time, Cycle Time & Little's Law equations: Available Working Time (Seconds) = (Shift Hours × 3,600) - (Break Minutes × 60) Time (TT) = (Net Available Working Time (sec)) / (Customer Demand per Shift (units)) Shift Capacity (Units) = ((Net Available Working Time) / (Cycle Time)) × N_stations's Law Lead Time (MLT) = (Work-In-Progress (WIP)) / (Throughput Rate) = WIP × ((Cycle Time) / (N_stations)) Minimum Operators = (Total Cycle Time Work Content) / (Takt Time)

Worked Example

For example, running an 8-hour shift with 45 minutes of breaks (26,100 net operating seconds) producing 450 required customer units with an actual cycle time of 52.0 seconds and 180 WIP buffer units: . Because the 52.0s Cycle Time is faster than the 58.0s Takt Time, the line produces 501 units maximum capacity. Under Little's Law, manufacturing lead time is .

Understanding Your Result

Compare your result against industry benchmarks for your specific sector — significant variation exists across industries, business stages, and geographic markets. Use this calculation as one data point alongside your unit economics, cash flow, and competitive positioning. For decisions involving significant capital allocation, validate your model assumptions with historical actuals from at least 6–12 months of operating data before projecting forward.