Lead Time Calculator
The Lead Time Calculator helps you determine total lead time by summing up all the individual components of your supply chain: order processing, manufacturing, quality inspection, and shipping. Understanding total lead time is essential for inventory planning and customer promise dates.
Lead Time Components
Formula
Total Lead Time = Processing + Manufacturing + QC + Transit + BufferEach component of lead time should be measured and summed. Adding buffer time accounts for variability and unexpected delays.
Variable Definitions
Order Processing
Time to process and confirm the order.
Manufacturing Time
Time to produce or pick the goods.
Quality Control
Time for inspection and quality checks.
Transit Time
Shipping time from origin to destination.
Example Calculation
Scenario: International supplier lead time: - Order Processing: 2 days - Manufacturing: 14 days - Quality Check: 3 days - Transit (Ocean): 28 days - Buffer: 5 days Total Lead Time = 2 + 14 + 3 + 28 + 5 = 52 days
How to Interpret Your Result
Managing lead time: • Longer lead times require higher safety stock • Identify the longest component for improvement focus • Track actual vs. planned lead time for reliability • Consider expedited options for critical orders