Enter the total cycle time (min) and the unit product time (min) into the Calculator. The calculator will evaluate the Assembly Time. 

Assembly Time Formula



  • AT is the Assembly Time (minutes)
  • TCT is the total cycle time (min)
  • UPT is the unit product time (min)

To calculate Assembly Time, subtract the unit product time from the total cycle time.

How to Calculate Assembly Time?

The following steps outline how to calculate the Assembly Time.

  1. First, determine the total cycle time (min). 
  2. Next, determine the unit product time (min). 
  3. Next, gather the formula from above = AT = TCT – UPT.
  4. Finally, calculate the Assembly Time.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total cycle time (min) = 50

unit product time (min) = 45


What is Total Cycle Time in manufacturing?

Total Cycle Time refers to the complete time taken from the start to the end of a production process, including all tasks, waiting times, and delays within the production cycle.

How does reducing Unit Product Time impact Assembly Time?

Reducing Unit Product Time decreases the time taken for each unit’s production, which in turn lowers the overall Assembly Time, making the production process more efficient.

Can Assembly Time affect the Overall Production Effectiveness (OPE)?

Yes, Assembly Time directly impacts the Overall Production Effectiveness by influencing the availability, performance, and quality metrics within a production process.

Why is it important to calculate Assembly Time accurately?

Accurately calculating Assembly Time is crucial for scheduling, cost estimation, resource allocation, and identifying opportunities for process improvement in manufacturing.