> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.easystore.co/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Inventory Forecasting

###### In this article:
1.  Introduction    
2.  Things to take note    
3.  Theories behind inventory forecasting
---
## 1. Introduction

Product inventory forecasting helps every business make better decisions in estimating the cost of revenue & sales accurately based on where they can predict in the short-term and long-term performance. _Why do we need inventory forecast?_

*   To maintain appropriate stock levels
    
*   To allocate resources efficiently for future growth
    
*   To improve the sales process
    
*   To identify competition coming out of the business OR new competition entering the market
---
## 2. Things to take note

*   This feature is available in **EasyStore Business plan and above** only
    
*   Make sure that you have uploaded products in EasyStore and here is a [guide](https://help.easystore.co/en/articles/2139279-add-products) on how to add products in EasyStore.
    
*   Kindly ensure that you have added products in EasyStore and the inventory control is under **EasyStore tracks inventory of this product**

![](https://storage.crisp.chat/users/helpdesk/website/b34797d9594d3000/garen-65_om4e9l.png)

You can look into the **Inventory Forecasting** under > [Inventories](https://admin.easystore.co/products/inventories)

![](https://storage.crisp.chat/users/helpdesk/website/b34797d9594d3000/garen-66_1n3wjb1.png)

You are able to view when is the product stock will run out based on the following attributes under inventory forecasting:
*   **Quality in stock**    
*   **Quality sold** (will list out the product that is included in orders placed in the selected date range)    
*   **Average quantity sold** (daily)   
*   **Stock runs out in** (X days or Out of Stock)    

![](https://storage.crisp.chat/users/helpdesk/website/f8f58a844f550800/d30ddc73-5214-423b-8a7f-b3a76e_px423t.gif)

**💡 Tips :** The **quality in stock** is editable, just click on the pencil ✏️ icon & change the quantity > Save and it will be updated! There are 2 ways to change/edit your product inventory in EasyStore:
* [Manual and Bulk](/en/article/where-to-update-my-product-inventory-part-1-manual-and-bulk-1g02xv4/)
* [Add and Set](/en/article/where-to-update-my-product-inventory-part-2-add-and-set-8tydyc/)
    
Besides, you're able to filter the product forecasting by:
*   **All Products** OR **Out of Stock products**
*   **Selected date range** (by day, weekly, daily, year)
 
![](https://storage.crisp.chat/users/helpdesk/website/b34797d9594d3000/garen-67_cbdvvo.png)
---
## 3. Theories behind inventory forecasting

Here would be the theories behind inventory forecasting:

![](https://storage.crisp.chat/users/helpdesk/website/b34797d9594d3000/garen-68_anuugj.png)

Average quantity sold = Total quantity sold ÷ Total days (selected date range).

**_For example:_**

Total quantity sold 50 ÷ Total days 7 days = 7 average quantity sold

__________________________________________________________________

Stock runs out at = Quantity in stock ÷ Average quantity sold

**For example:**

Quantity in stock (100) ÷ Average quantity sold (12) = stock runs out in 8 days