How to Create SKU Codes: A Simple System That Scales
Good SKUs make inventory faster to manage and harder to mess up. Here's how to design a SKU scheme and generate consistent codes for free.
What a SKU is
A SKU (stock-keeping unit) is your internal code for a product or variant. Unlike a manufacturer's barcode, you control it. A clean SKU scheme makes picking, counting, and reporting faster and less error-prone. The free SKU Generator builds consistent codes from your own segments.
Anatomy of a good SKU
Build SKUs from meaningful segments — for example category, product, and variant — followed by a sequence number: SHIR-OXFD-BLUM-001. Keep them short, uppercase, free of spaces and special characters, and consistent in structure.
Rules worth following
- Don't start with zero in a way that spreadsheets strip.
- Don't embed prices — they change.
- Keep SKUs distinct from barcodes (UPC/EAN). They serve different purposes.
- Be consistent — the same segment order every time.
SKUs and barcodes work together
Your SKU is internal; the barcode is for scanning. Generate scannable labels with the Barcode Generator once your SKUs are set.