Free AI SKU Generator for Ecommerce

What Is a SKU Generator?

A SKU generator is a tool that automatically creates Stock Keeping Unit (SKU) codes for your product catalogue. Instead of manually devising codes for every item — a process that becomes error-prone once you pass a few dozen products — a generator applies consistent naming rules to produce codes that are readable, searchable, and sortable. Our free AI-powered SKU generator goes a step further: it analyses your product names to extract attributes like brand, type, size, and colour, then builds structured codes that make inventory management significantly easier.

If you're new to SKU codes, our comprehensive guide on what a SKU number is and how to create one covers the fundamentals in detail.

SKU Naming Best Practices for Ecommerce [2026]

A well-structured SKU follows a logical pattern that encodes key product information at a glance. Here are the conventions our AI generator applies — and that we recommend for all sellers:

• Lead with the category or brand abbreviation — e.g., TS for T-Shirt, NK for Nike. This groups related products together in sorted lists.
• Encode key attributes in order of importance — typically category → brand → type → size → colour. Example: TS-NK-DRYFIT-L-BLK.
• Use uppercase letters and hyphens, avoid special characters — characters like #, &, or spaces cause import errors on Shopee, Lazada, and Amazon.
• Keep codes under 40 characters — most marketplaces have SKU length limits (Amazon allows 40, Shopee allows 100, but shorter codes are easier to scan in warehouses and spreadsheets).
• Never start with zero — spreadsheet software like Excel and Google Sheets strips leading zeros, which breaks your lookup. Our guide on removing scientific notation in CSV uploads covers related formatting issues.
• Avoid ambiguous characters — skip O vs 0, I vs 1, and L vs 1 when hand-reading codes in a warehouse environment.

For a deeper dive into SKU systems, including real-world examples across different product categories, see our guide on mastering SKU management best practices.

Why Consistent SKUs Matter for Multichannel Sellers

If you sell on more than one platform — Shopee, Lazada, Amazon, TikTok Shop, your own Shopify or WooCommerce store — SKU consistency is not optional. Each marketplace has its own product catalogue, but your warehouse holds one physical inventory. When every platform uses the same SKU code for the same product, you can sync stock levels in real time and avoid overselling. When they don't, you end up with phantom stock discrepancies and cancelled orders.

According to Shopify's inventory guide, businesses that implement structured SKU systems see measurable improvements in pick accuracy and fulfilment speed. For multichannel sellers, the effect is even more pronounced because a single SKU lookup resolves inventory across all channels simultaneously. Tools like multichannel listing software rely on consistent SKUs to keep your catalogue synchronised across every sales channel.

How to Use This Free SKU Generator

Our generator works in three steps:

1. Paste your product names — enter up to 10 product titles at once, one per line. These can be raw listing titles from Shopee, Lazada, Amazon, or any marketplace.
2. Click Generate — the AI analyses each title, extracts brand, product type, and key attributes, then produces a structured SKU code.
3. Copy and use — paste the generated SKUs directly into your marketplace seller centre, inventory spreadsheet, or inventory management system.

Need to generate SKUs for your entire catalogue at once? OneCart's Item Master lets you bulk-generate and manage SKUs across all connected platforms — with automatic sync so every channel stays up to date. Learn more about the Item Master and how it works.

Frequently Asked Questions

Is this SKU generator really free?

Yes. You can generate SKU codes for up to 10 products at a time, as many times as you like, with no signup or payment required. For bulk generation across your full catalogue, OneCart's Item Master handles thousands of SKUs with automatic marketplace sync.

What's the difference between a SKU and a barcode (UPC/EAN)?

A SKU is an internal code you create to identify products within your own business. A UPC or EAN barcode is a universal product identifier issued by GS1 that's standardised across all retailers. You need both: SKUs for internal tracking and barcodes for retail scanning. Our SKU number guide explains the distinction in detail, including when you need each type.

Can I use the same SKUs across Shopee, Lazada, and Amazon?

Yes — and you should. Using the same SKU across all marketplaces is the foundation of accurate multichannel inventory management. Each platform has slightly different SKU format requirements (character limits, allowed characters), but our generator produces codes that comply with all major marketplace rules. For real-time inventory sync across platforms, multichannel inventory management software can map your SKUs automatically.

How should I handle product variations (size, colour)?

Each variation should have its own unique SKU. The best approach is to use a parent code with a variation suffix — for example, TS-NK-DRYFIT-L-BLK for a large black Nike Dri-FIT t-shirt, and TS-NK-DRYFIT-M-WHT for a medium white version. This keeps related items grouped while ensuring every physical item is distinctly identifiable. Our AI generator automatically detects and encodes variations when they appear in your product names.