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Build structured, professional SKU codes for your products. Define your format, generate one at a time or in bulk from CSV. No signup. No watermark.
"chars" = max characters from each value. Set to 0 to keep the full word.
0 = no number, 3 = 001, 4 = 0001, etc.
Your SKU
NUT-PRO-1KG-CHOC-001Change the values above to see your SKU update live.
Fulnex tracks every SKU across every store, every bin, every order — with real-time stock, picking workflows, and automatic barcode label printing. Made for South African e-commerce.
A SKU exists so a human can identify a product without looking it up, and so a system can match it without ambiguity. Most store SKUs fail at both because they were invented one product at a time with no rule behind them.
A good SKU encodes attributes in a fixed order — category, then product, then variant — so that sorting a list groups related items automatically and a person reading a picking slip can tell a medium from a large without opening the product page. TSHIRT-BLK-M reads instantly. Anything ending in a bare sequential number does not.
Price, supplier and stock location all change. A SKU should not, because it is referenced in orders, invoices and shipping records that are already in the past. Once a SKU has appeared on a customer's invoice, changing it breaks the link between that record and the product.
Spaces break CSV imports. Slashes break URLs. The letter O and the digit 0 are indistinguishable in warehouse handwriting and on a faded label, as are I and 1. Pick one convention, exclude the ambiguous characters entirely, and apply it to every product from the start — retrofitting SKUs across a live catalogue is far more painful than choosing well early.
A Stock Keeping Unit — a unique code identifying one specific product variant, including its size and colour. Two variants of the same product need two SKUs.
Long enough to be structured, short enough to read aloud and type. Eight to sixteen characters in segments separated by hyphens suits most catalogues.
You can, but avoid it. SKUs appear on past orders, invoices and shipping records, and changing one breaks the link between those records and the product.