Days Inventory Outstanding (DIO) Calculator
E-Commerce & RetailCalculate the average number of days inventory sits before being sold.
Days Inventory Outstanding
The average number of days your inventory sits in stock before being sold.
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
E-Commerce & Retail calculators
Frequently Asked Questions
What does DIO tell me?
DIO shows how efficiently you're converting inventory into sales — a lower DIO means your cash isn't tied up in unsold stock for as long, which generally improves cash flow.
How does DIO relate to inventory turnover?
DIO and inventory turnover ratio measure the same underlying efficiency from different angles — DIO is essentially 365 divided by your turnover ratio, expressed in days instead of a frequency count.
What is a good DIO for e-commerce?
It varies by category, but many e-commerce businesses target a DIO under 60-90 days. Lower is generally better for cash flow, though extremely low DIO in some categories may also signal risk of stockouts.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Days Inventory Outstanding (DIO) Calculator on any site — no code needed. Customize colors, remove branding, and track usage.
