Singapore
Thailand
IndonesiaImagine running an online store with hundreds of products.
A customer orders a black T-shirt in size L.
Another orders the same design in blue, size M.
A third customer buys the black version again—but in size XL.
Without a proper inventory system, things can get messy fast.
This is where SKU comes in.
A SKU helps businesses organize, identify, track, and manage products efficiently. Whether you’re selling through an ecommerce website, marketplace, retail store, or social commerce platform, SKUs are essential for maintaining inventory accuracy and preventing costly mistakes.
Let’s break down everything you need to know about SKUs and how they can help your business grow.
What is a SKU?
SKU stands for Stock Keeping Unit.
It is a unique code assigned to a product or product variation for inventory tracking purposes.
Businesses use SKUs to identify products internally and manage stock levels efficiently.
Quick Answer
A SKU (Stock Keeping Unit) is a unique inventory code used by businesses to track, identify, and manage products and product variations.
For example:
Black T-Shirt (Size M): TSH-BLK-M
Black T-Shirt (Size L): TSH-BLK-L
Blue T-Shirt (Size M): TSH-BLU-M
Each variation gets its own SKU.
Why Are SKUs Important?
Without SKUs, inventory management becomes difficult as product catalogs grow.
SKUs help businesses:
- Track stock levels accurately
- Reduce inventory errors
- Speed up order fulfillment
- Improve warehouse organization
- Generate inventory reports
- Forecast demand more effectively
- Think of SKUs as the “identity cards” of your products.
Every product gets its own unique identifier.
How Does a SKU Work?
A SKU acts as a reference code within your inventory system. When an order is placed, the SKU tells you exactly which product needs to be picked, packed, and shipped.
For example:
Product: Running Shoes
| Product Variation | SKU |
|---|---|
| Red, Size 8 | RUN-RED-08 |
| Red, Size 9 | RUN-RED-09 |
| Blue, Size 8 | RUN-BLU-08 |
| Blue, Size 9 | RUN-BLU-09 |
Instead of searching manually, staff can instantly identify the correct product.
SKU Example for Different Businesses
Fashion Store
Women's Dress: DRS-BLK-S DRS-BLK-M DRS-BLK-L
Electronics Store
Wireless Earbuds EAR-WHT EAR-BLK
Beauty Business
Lipstick Collection LIP-RED LIP-PNK LIP-NUD
SKU vs Barcode: What's the Difference?
Many people confuse SKUs and barcodes.
They are related but serve different purposes.
| SKU | Barcode |
| Created by the business | Usually standardized |
| Used internally | Used externally |
| Can contain meaningful information | Usually numerical |
| Helps inventory management | Helps scanning and sales tracking |
| Customizable | Universal format |
Quick Answer
A SKU is an internal inventory code created by a business, while a barcode is a machine-readable code used for product identification and scanning.
