Inventory Calculator
This tool helps you determine exactly how much inventory to reorder based on your sales history. Simply input your recent sales data (last 30-90 days), current stock levels, and supplier lead times. We'll calculate your safety stock buffer and tell you precisely when and how much to reorder.
📊 Add Your Data
Upload a CSV or enter manually
🎯 Set Service Level
Choose your stockout protection
📦 Get Buy List
See exact reorder quantities
Calculator
How many days of sales history to analyze
Higher service level = more safety stock
Extra days of inventory to carry
Multiply demand for promotions/events
SKU Data
Try Sample Data
Not sure how to get started? Try the calculator with realistic sample data from a clothing store.
Sample Preview:
TEE-RED-S
Red T-Shirt Small
45 sold
JEAN-BLU-M
Blue Jeans Medium
28 sold
HAT-BLK-OS
Black Hat One Size
67 sold
+3 more SKUs...
Sample includes:
- 6 SKUs with varying sales velocity
- Different inventory levels
- Various lead times (7-30 days)
- Mix of fast and slow moving items