Calculate GMROI
Average Inventory Cost: (Beginning Inventory + Ending Inventory) / 2
Optimal GMROI: Typically, a GMROI above 3 is considered good, indicating strong inventory efficiency.
Want to know how well your inventory is performing? Our GMROI Calculator helps you measure how much gross profit you earn for every dollar invested in inventory. It’s a powerful metric for retailers, wholesalers, and inventory managers alike.
What Is GMROI?
GMROI stands for Gross Margin Return on Investment. It tells you how many dollars of gross profit you make for every dollar you invest in inventory.
In short:
High GMROI = Better inventory efficiency & profitability
GMROI Formula
GMROI = Gross Margin ÷ Average Inventory Cost
Where:
- Gross Margin = Net Sales – Cost of Goods Sold (COGS)
- Average Inventory Cost = (Starting Inventory + Ending Inventory) / 2
For example, if your gross margin is $50,000 and average inventory is $25,000:
GMROI = 50,000 ÷ 25,000 = 2.0
This means for every $1 spent on inventory, you earned $2 in gross profit.
How to Use the Calculator
Just enter:
- Gross Margin (or Sales and COGS)
- Beginning & Ending Inventory
The calculator will instantly give you your GMROI ratio, so you can evaluate inventory performance quickly and clearly.
Why Is GMROI Important?
- Helps identify profitable vs. underperforming products
- Drives smarter purchasing and pricing decisions
- Improves stock turnover and inventory ROI
- Supports lean, profit-driven retail strategies
FAQs ❓
What is a good GMROI value?
A GMROI above 1.0 means you’re making more than you’re spending on inventory. The higher, the better!
Is GMROI the same as ROI?
No — GMROI is specifically focused on inventory profitability, not overall investment performance.
