How do you calculate standard work combination time?

Add the manual work time, automatic machine time, and walk time for one operator cycle. With 35 seconds manual, 20 seconds auto, and 5 seconds walk, the combination time is 35 + 20 + 5 = 60 seconds.

What is the difference between manual time and auto time?

Manual time is hands-on work the operator performs; auto time is machine-controlled cycle time that runs without the operator. The distinction matters because auto time can overlap the operator's next task, which a combination table captures graphically.

What is a good standard work combination time?

A good combination time is one that fits comfortably under takt with a small buffer. If takt is 60 seconds and your loop sums to 60, you have zero margin, so target a loop several seconds below takt.

Why include walk time in the calculation?

Walking between machines is non-value-adding but unavoidable in many cells, and it directly consumes the operator's cycle. Ignoring it understates the loop and causes the cell to fall behind takt over a shift.

Standard work combination time vs takt time?

Combination time is how long the operator loop actually takes; takt is how long you are allowed. The loop must be less than or equal to takt. Combination time over takt means the cell cannot keep up and the loop must be rebalanced.

How is this used in a Standard Work Combination Table?

The table plots manual, auto, and walk segments on a timeline against takt, and the combination time is the total length of that timeline. It reveals overlap opportunities and wait, which a plain sum hides.

Lean Manufacturing & Operations calculator

Standard Work Combination Time Calculator

Standard Work Combination Time is the total time for one operator cycle, summing manual work, automatic machine time, and walking between stations. It is the backbone of the Standard Work Combination Table, the lean document that proves an operator's loop fits inside takt. Industrial engineers and team leaders use it to design balanced, repeatable work and to expose where a person waits on a machine. Knowing this number is what separates documented standard work from a vague 'about a minute' guess on the floor.

What this calculator does

Sum manual time, auto machine time, and walk time to find the total standard work combination time for one operator cycle.
Use this when building or auditing a standard work combination sheet to verify that each operator's loop fits within takt time.
It sums the three components of one operator cycle: manual hands-on time, automatic machine run time, and walk time between stations.

Formula used

Combination Time = Manual Time + Auto Time + Walk Time

Inputs explained

Manual work time:
Auto machine time:
Walk time:

How to use the result

Use it when building a Standard Work Combination Table, validating that an operator loop fits under takt, or quantifying machine-wait time inside a cycle.
A simple sum can overstate cycle time when manual and automatic times overlap; true combination tables show machine time running in parallel with the operator's next manual element.

Current U.S. benchmarks

U.S. manufacturing runs at 75.6% of capacity (Federal Reserve, May 2026). New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate standard work combination time? Add the manual work time, automatic machine time, and walk time for one operator cycle. With 35 seconds manual, 20 seconds auto, and 5 seconds walk, the combination time is 35 + 20 + 5 = 60 seconds.
What is the difference between manual time and auto time? Manual time is hands-on work the operator performs; auto time is machine-controlled cycle time that runs without the operator. The distinction matters because auto time can overlap the operator's next task, which a combination table captures graphically.
What is a good standard work combination time? A good combination time is one that fits comfortably under takt with a small buffer. If takt is 60 seconds and your loop sums to 60, you have zero margin, so target a loop several seconds below takt.
Why include walk time in the calculation? Walking between machines is non-value-adding but unavoidable in many cells, and it directly consumes the operator's cycle. Ignoring it understates the loop and causes the cell to fall behind takt over a shift.
Standard work combination time vs takt time? Combination time is how long the operator loop actually takes; takt is how long you are allowed. The loop must be less than or equal to takt. Combination time over takt means the cell cannot keep up and the loop must be rebalanced.

Last reviewed 2026-05-12.