LabelCroppers

Amazon FBA box labels

FBA Box Labels vs FNSKU Labels: What Goes Where

Updated 27 October 2026 · 2 min read · By the LabelCroppers team

New FBA sellers often mix up two labels: the FNSKU label for each unit and the box label for each carton.

Both are needed for a smooth inbound shipment.

New FBA sellers often mix up the two kinds of labels Amazon asks for. Each has a different job, and using the wrong one can delay receiving at the fulfilment centre.

Amazon FBA box labelsFree · No upload · No sign-up
Open the tool

FNSKU labels

Small barcode stickers that identify each sellable unit. Print them with the FBA FNSKU sticker generator.

Box labels

Larger labels that identify each carton in a shipment. Split them to 4×6 with the FBA box label tool.

Quick comparison

  • FNSKU label – one per unit, identifies the product as your inventory.
  • Box label – one per carton, identifies the shipment and box.
  • Shipping/carrier label – from the carrier, used for transport.

Printing both on one printer

FNSKU labels usually print on small thermal labels such as 50×25 mm or on A4 sheets, while box labels print on 4×6. If you have one thermal printer, swap rolls between jobs, or print FNSKU labels on A4 sheets with an office printer.

Making them here

Create FNSKU labels with the FBA FNSKU sticker generator and split box label PDFs into 4×6 labels with the FBA box label tool.

Placement

  • FNSKU: on each product, covering any other barcode.
  • Box label: on a flat side of each carton.

Frequently asked questions

Can one label do both jobs?

No.

Do I need both for every shipment?

Yes, unless Amazon labels units for you under a paid service.

Sizes?

FNSKU labels are small; box labels print well on 4×6.

Can I put FNSKU labels on the outside of the box?

No, FNSKU labels go on each unit; the box gets a box label.

Are both tools free?

Yes, both run in your browser with no sign-up.

Where do I get box labels?

Download them for your shipment from Seller Central.

Try the Amazon FBA box labels – freeRuns in your browser. Your files never leave your device.
Open the tool