Inventory Days Calculator

Example:

Current Inventory (Units) = 5000
Average Daily Sales (Units) = 250
You have about 20 days of inventory left.

How to Calculate Inventory Days

First, let’s understand the variables.

Variables

Current Inventory (Units): The total number of physical units you currently have available for sale. Example: 5000 units of product A in the warehouse.

Average Daily Sales (Units): The average number of units sold per day. Example: 250 units of Product A are sold each day on average.

Inventory Days: The estimated number of days your current inventory will last at the current sales rate.

Formula

Inventory days = Current inventory (units) / Average daily sales (units)

Inventory days = 5000 / 250 = 20 days