Shopify Inventory Analytics: What to Track Before Stock Becomes a Sales Problem

Having 10,000 units in your Shopify store sounds great until you realize your best-selling product has only 15 units left. A massive inventory count doesn't guarantee you have the right stock available when customers want to buy.

Instead of just checking your total unit count, Shopify inventory analytics helps you answer crucial business questions: How fast is a product selling? When will we run out? What inventory is tying up our cash without moving? Here is what you need to track.

1. Available vs. On-Hand Stock Shopify breaks inventory into different states: On hand, Available, Committed, Unavailable, and Incoming.

If you have 80 units "On Hand," it sounds like you can sell 80 units. However, if 20 are "Committed" to unfulfilled orders and 10 are "Unavailable," you only have 50 units "Available" to sell. Always track Available stock for your day-to-day restocking decisions.

1. Sell-Through Rate This metric answers a simple question: How much of the stock we had available did customers actually buy?

A high sell-through rate means inventory is moving quickly. A low rate could mean the product is dead stock—or it could just be a seasonal item or a newly launched product without enough history. Use it as a signal, not a strict rule.

1. Days of Inventory Remaining Having 30 units left means nothing without context. If a product sells one unit a day, you have a month of stock. If it sells 10 a day, you have a weekend left.

Shopify calculates this by dividing your ending inventory by your average daily quantity sold. Crucial Step: Compare this number with your supplier's lead time. If you have 12 days of stock left but it takes 20 days for new inventory to arrive, you already have a stockout problem.

1. ABC Analysis for Revenue Contribution Not all inventory is created equal. Shopify's ABC analysis categorizes products based on revenue contribution:

• A-Grade: Top 80% of revenue
• B-Grade: Next 15% of revenue
• C-Grade: Bottom 5% of revenue

An A-grade product approaching a stockout is a crisis. A C-grade product with massive inventory is tying up cash and warehouse space. Note: Shopify calculates this based on retail price, not your profit margin.

1. Track Stockouts as Lost Opportunity If a product suddenly shows zero sales, did demand drop, or did you just run out of stock? Before you blame marketing for a sales drop, check your inventory levels during that exact time period.

If your A-grade products frequently hit zero available stock, your replenishment strategy needs fixing.

Turning Analytics Into Action
Inventory management isn't just about quantity; it’s about timing. The best decisions combine available stock, sales velocity, supplier lead time, and revenue contribution.

If you want to stop manually cross-referencing your sales and inventory reports, platforms like Statty AI bring these metrics together into one unified dashboard, providing immediate low-stock and out-of-stock alerts.

Want to learn more about tracking dead stock, managing multi-location inventory, and handling adjustments?
Read the full guide on our main blog: Shopify Inventory Analytics: What Merchants Should Track.