What is Tamaguri?

“Tamaguri,” also known as “Niguri,” is a practical tool used in Japanese manufacturing to simulate and plan materials and production. It’s designed to help planners and engineers understand when materials will run out and when to replenish — all through a simple yet powerful logic flow. 

 

The Simple Logic Behind Tamaguri

At its core, Tamaguri is based on three fundamental concepts:  

  1. Inventory 
  2. Demand (inventory deduction) 
  3. Production or Purchase (inventory increase) 

The calculation is straightforward: 

Inventory after transactions = Starting inventory – Demand + Production/Purchase 

This cycle repeats over daily, weekly, or monthly timelines — giving you a clear picture of inventory flow across time.  

🔍 Example:

EventQuantityInventory at end of yesterday 500 pcs

Shipment (demand) today                               -100 pcs

Production/Purchase today                              +50 pcs

Inventory at end of today                                     450 pcs  

With Tamaguri, this simple logic is extended across your planning horizon — whether it’s for a few days or several months — to help avoid shortages, reduce overstock, and improve ordering timing.  

Need More?

If you're looking for more advanced versions or features like reorder points, lead time, and automatic ordering logic, feel free to explore our products or contact us — we’re here to help!