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Fulfillment & receiving

Inventory Turnover Calculator

Calculate inventory turnover and days inventory outstanding (DIO) from cost of goods sold and inventory value.

Enter values at cost, in the same currency, for the same period.

How inventory turnover works

Inventory turnover is cost of goods sold divided by average inventory, where average inventory is beginning plus ending inventory divided by two.

Days inventory outstanding (DIO) is the number of days in the period divided by inventory turnover. It shows roughly how many days your current stock lasts.

Periods use 365 days for a year, 91 for a quarter, and 30 for a month.

Read the ecommerce inventory management guide

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