Days of Supply Calculator

Calculate days of supply for inventory planning.

Estimate how many days your current stock of one product may last at your normal daily sales or usage rate. This calculator evaluates one product at a time.

How many sellable or usable units of this product you have right now.

How many units you typically sell or use in one normal day. Avoid using an unusually busy or unusually quiet period unless it reflects your typical demand.

Results

Enter units currently on hand and average units sold or used per day, then choose Calculate days of supply.

Want to know when to reorder this product?