SKU Generator

A SKU, stock keeping unit, is the unique code you assign each product variant for inventory tracking. Good SKUs make picking, packing, restocking and multichannel selling dramatically easier; bad SKUs, random numbers or spreadsheet chaos, turn every warehouse task into a treasure hunt. If you sell the same product on Etsy, Amazon and your own site, one shared SKU keeps everything in sync.

A strong SKU is short, readable and structured: segments for brand, product and attributes joined by a consistent separator, ending in a number for variants. This generator builds them from your inputs, strips spaces and special characters automatically, and numbers a whole batch sequentially so you can SKU an entire product line in one pass.

Keep SKUs under about 20 characters so they fit on labels and pick lists. Avoid confusing character pairs like 0 and O or 1 and I, which get misread on printed labels. Never reuse a SKU for a different product, even after the original is discontinued: old codes live on in reports, returns and accounting.

Note that a SKU is your internal code, not a barcode. Marketplaces like Amazon may separately require a UPC, EAN or GTIN for brand registry and listings; the SKU is what you use to keep track of things on your side.