Tool · Line design
Takt time and line balancing calculator
Enter your shift pattern, demand and work content. The calculator returns takt time, design cycle time, the number of stations and the balance efficiency — the four numbers every line design starts from.
What this gives you
- Takt time
- Seconds per unit
- Design cycle time
- At your balance target
- Station count
- Theoretical minimum
- Balance efficiency
- How well the work splits
Your inputs
The sum of all manual and machine time for one unit, across every operation.
Design cycle time as a percentage of takt, to absorb normal variation. 85–90% is common.
Leave at 100 to size against planned time only. Lower it to size for real-world losses.
Figures update as you type. Nothing is sent anywhere — the calculation runs in your browser.
Results
How it works
The arithmetic behind each number
Nothing here is proprietary — it is the standard line-balancing sequence, so you can reproduce it in a spreadsheet and argue with it.
Available time
Shift hours minus planned breaks, changeovers and meetings. Unplanned downtime is not subtracted here — handle it through the availability figure or a buffer.
Takt time
Available time per day divided by units required per day. It is the drumbeat the customer sets, not something the line can negotiate.
Design cycle time
Takt multiplied by your balance target. Designing every station to exactly takt leaves nothing for operator variation, minor stoppages or part supply.
Stations
Total work content divided by design cycle time, rounded up. This is a theoretical minimum — real lines add stations where work cannot be split across a fixture or a machine.
Balance efficiency
Work content divided by (stations × design cycle time). Below about 80% there is usually a station holding a task that could be moved.
Reading the result
What the numbers should make you do
If the station count is higher than your floor space allows, the lever is work content, not the calculator. Move work into a machine, into a sub-assembly fed offline, or into the supplier. Adding shifts changes takt; it does not change how long the work takes.
If balance efficiency is below about 80%, one or more stations are carrying a task that cannot be split — a long machine cycle, a cure time, a test. Those are candidates for parallel stations or an offline loop, not for a faster operator.
If takt is under roughly 30 seconds, manual stations get difficult: walking, reaching and part presentation start to consume a large share of the cycle. That is usually the point where automation or parallel lines are worth costing.
If takt is over several minutes, a conveyor-paced line may be the wrong architecture. Fixed-position or cell assembly is often cheaper and more flexible at that rate.
The full design sequence — work content breakdown, station allocation, conveyor choice and error-proofing — is in our assembly line design guide, and the money side is in what an assembly line costs.
FAQ
Takt time questions
What is takt time?
Takt time is the rate at which you must complete one unit to meet customer demand. It is available production time per day divided by units required per day. It is set by demand, not by how fast your line happens to run.
What is the difference between takt time and cycle time?
Takt time is what demand requires. Cycle time is what the line actually achieves at its slowest station. A line is capable when cycle time is comfortably below takt; when cycle time exceeds takt you miss the schedule.
Why design stations below takt rather than at takt?
Because real lines have variation — operator differences, part supply, minor stoppages. Balancing to 85–90% of takt gives the line the headroom to recover without losing the day's output.
How many stations will my line need?
Divide total work content by your design cycle time and round up. The calculator does this for you, but treat it as a floor: tasks that cannot be split across a fixture or a machine usually push the real number a little higher.
Start a project
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Send your work content breakdown and target volume. We will come back with a station plan, a layout envelope and an indicative budget.
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