Economic Order Quantity Calculator With Graph (EOQ Calculator)

Last updated on by Editorial Staff

Economic Order Quantity (EOQ) Calculator

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Quick Guide to Use Economic Order Quantity Calculator

Follow these simple steps to use the Economic Order Quantity (EOQ) calculator:

  • Select your currency from the dropdown menu.
  • Enter the Annual Demand, Order Cost, and Holding Cost in the respective input fields.
  • Click the “Calculate” button to get the EOQ and Period Order Quantity results.
  • Use the “Reset” button to perform a new calculation

Input Field Details

  • Annual Demand: The total demand for the product in a year.
  • Order Cost: The cost incurred for placing a single order.
  • Holding Cost: The cost of holding one unit of inventory for a year.

Formula Used

Economic Order Quantity = Square root of  {(2 X Annual Demand X Order Cost) / Holding Cost)} 

Period order quantity = Economic order quantity / Average weekly usage

Where,  average weekly usage = Annual Demand / 52

What is Economic Order Quantity (EOQ)?

Economic Order Quantity (EOQ) is a formula used to determine the optimal order quantity that minimizes the total inventory costs, including ordering costs and holding costs.

It helps organizations find the right balance between ordering too much (resulting in higher holding costs) and ordering too little (resulting in higher ordering costs).

What is Period Order Quantity?

Period Order Quantity is the quantity of items that should be ordered during a specific time period to maintain an optimal inventory level.

You can calculate the number of weeks the ordered quantity is intended to meet the requirements by dividing the Economic Order Quantity by the average weekly usage.

Who Can Use This Calculator?

This calculator is valuable for businesses, supply chain managers, and procurement professionals looking to optimize their inventory management processes.

It’s suitable for companies of all sizes that deal with inventory, from small retailers to large manufacturing enterprises.

Which Industries Can Use This Calculator?

Industries involved in manufacturing, retail, distribution, and any business with inventory management concerns can benefit from this calculator.

Examples include manufacturing plants, e-commerce businesses, wholesalers, and retailers.

Benefits of Using This Calculator

  • Cost Optimization: Helps in minimizing both ordering and holding costs.
  • Efficient Inventory Management: Ensures that inventory levels are optimal, preventing stockouts and overstock situations.
  • Improved Cash Flow: Reduces excess inventory holding, freeing up capital for other business needs.


How often should I use the EOQ calculator?

It’s recommended to use the calculator regularly or whenever there are changes in demand, costs, or other relevant factors.

Can this calculator handle multiple products simultaneously?

No, this calculator is designed for a single product at a time. Repeat the process for each product.

What if my demand is not constant throughout the year?

The EOQ model assumes constant demand. For variable demand, consider adjusting the model based on seasonal variations.