Line Balancing Calculator

Line balancing distributes the total work in an assembly process evenly across workstations so the line runs as close as possible to its target rate, or takt time, with a minimum of idle time. Takt Time is the maximum time allowed per station per cycle to meet customer demand, and Minimum Stations Needed is simply Total Task Time divided by that takt time, rounded up -- the theoretical fewest stations the work can be split across. Line Efficiency compares the work actually being done to the work capacity available across all your current stations (Total Task Time divided by Number of Workstations times Takt Time), and Balance Delay is the complement -- the share of station-time capacity going unused as idle time. A line with unevenly loaded stations but ENOUGH of them shows up here as low efficiency and high balance delay even if the overall line still meets demand.

A line with TOO FEW stations for its takt time is a different, more serious case: it doesn't have spare capacity to be inefficient WITH, so Line Efficiency and Balance Delay are capped at 100%/0% rather than reporting a meaningless efficiency above 100%. The Capacity Status output flags this infeasible case explicitly -- when it does, trust that message over the capped percentages, since 100% efficiency there does not mean the line is well balanced, it means the line cannot meet takt time at all with that station count. The Smoothness Index gives a rough single-number sense of how far the average station load sits from the takt-time target, useful for comparing different task-to-station assignments at a glance. Output per Hour is derived purely from takt time (3,600 seconds divided by takt time) and does not depend on how many stations or how much task time you enter, since it describes the line's throughput rate rather than its internal balance.