Littles Law Calculator

Enter 2 of the 3 below
<-- WIP
<-- Throughput
<-- Cycle Time

Using Little's Law, Calculate WIP given a cycle time of 100 and a throughput of 5

Using Little's Law, the relationship between WIP, Throughput (TH), and Cycle Time (CT) is below:

CT  =  WIP

Cross Multiplying, we get


Plugging in our numbers, we get:

WIP = 100 x 5
WIP = 500

What is the Answer?

WIP = 500

How does the Littles Law Calculator work?

Given two out of the three inputs for Littles Law, Throughput (TH), Cycle Time (CT, and WIP, this solves for the third item.
This calculator has 3 inputs.

What 3 formulas are used for the Littles Law Calculator?

  1. CT = WIP/TH
  2. WIP = CT x TH
  3. TH = WIP/CT

For more math formulas, check out our Formula Dossier

What 4 concepts are covered in the Littles Law Calculator?

cycle time
the amount of time a team spends actually working on producing an item, up until the product is ready for shipment
a mathematical statement which always holds true
littles law
the average number of items in a stationary queuing system, based on the average waiting time of an item within a system and the average number of items arriving at the system per unit of time.
what comes out of a function

Example calculations for the Littles Law Calculator

  1. WIP=3000,TH=6
  2. WIP=3000 and CT=5
  3. TH=5,CT=100

Littles Law Calculator Video


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