GMROI Calculator - Gross Margin Return on Investment
Measure how efficiently inventory turns into gross margin dollars.
The calculator shows gross margin, gross margin percentage, and the GMROI value in one pass.
GMROI Result
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Run the calculation to see the inventory return.
Quick Answer
GMROI is gross margin dollars divided by average inventory cost. It tells you how much gross margin you generate for each dollar tied up in inventory.
How to Calculate GMROI
- Enter revenue, COGS, and average inventory cost.
- Click Calculate.
- Review gross margin, margin percentage, and GMROI.
Formula
Gross margin = revenue - COGS
GMROI = gross margin / average inventory cost
Gross margin % = gross margin / revenue x 100
Worked Examples
Example 1: 100,000 revenue and 65,000 COGS gives 35,000 gross margin.
Example 2: With 20,000 average inventory cost, GMROI is 1.75.
Example 3: If inventory cost rises with the same margin, GMROI falls.
How to Interpret Your Results
| GMROI | Meaning | Action |
|---|---|---|
| Below 1 | Gross margin does not cover inventory cost | Review pricing, markup, or stock levels |
| 1 to 2 | Inventory is generating a moderate return | Compare against category targets |
| Above 2 | Inventory is performing well | Check whether the result is sustainable |
Frequently Asked Questions
Related Calculators
Detail About GMROI Calculator - Gross Margin Return on Investment
This page helps you evaluate how much gross margin your inventory produces relative to the money tied up in stock.
References
- OmniCalculator reference page
- GMROI is widely used in retail and merchandising.
- Last reviewed: March 2026.