Work out little law for factory instantly with clear inputs, formula shown and shareable results.
Little's law states that in any stable process, work in process equals throughput times flow time. Knowing any two of the three gives the third, which makes it the most useful single relationship in factory and queue analysis. It holds regardless of the distribution of arrival or service times.
Little's law
WIP = throughput x lead time; lead time = WIP / throughput; throughput = WIP / lead time
Average input equals average output over the measurement window, with no systematic build-up or drain of inventory. Over a long enough period almost every real process qualifies.
Yes — jobs in a queue, tickets in a support system, patients in a clinic. Units and time just need to be consistent.