Thermal Label Size Guide
Which label do I need?
Pick what you are labelling. Each card shows the label shape at the same scale.
Thermal label size chart
Sizes are width x height in millimetres. Click a size to shop it.
| Size | Inches | Best for | Shop |
|---|---|---|---|
| 100 x 150mm MOST POPULAR | 4 x 6in (A6) | Standard shipping labels: Australia Post, Sendle, shipping apps, marketplaces | Rolls · Fanfold · Colours |
| 100 x 175 / 187 / 200mm | 4 x 7-8in | Longer shipping labels used by some services | 100x175 · 100x187 · 100x200 |
| 104 x 159mm | 4 x 6.25in | Dymo LabelWriter 4XL / 5XL shipping labels | Dymo 4XL compatible |
| 100 x 100mm | 4 x 4in | Carton labels, small freight and pallet labels | 100x100 |
| 100 x 50 to 100 x 80mm | 4 x 2-3in | Return address, carton contents, warehouse locations | 100x50 · 100x70 · 100x80 |
| 100 x 20 to 100 x 35mm | 4 x 1in | Long barcodes, shelf edge and bin labels | 100x25 · 100x35 |
| 50 x 25 to 60 x 40mm | 2 x 1in | Product barcodes, SKUs, Amazon FNSKU, price labels | 50x25 · 57x32 · 60x40 |
| 30 x 15 to 40 x 30mm | Under 1.5in | Small items, jewellery tags, price stickers | 30x15 · 40x20 · 40x30 |
| 50mm round | 2in round | Seals, branding stickers, stock dots | White · Pink · Yellow |
ⓘ Courier label formats can depend on the service, destination and your account settings. Check the label format in your courier or shipping app before buying in bulk.
Common sizes, drawn to scale
All shapes below use the same scale, so you can compare them at a glance. Tap one to shop.
Grid squares = 20mm. On-screen size varies by device; use the mm sizes when ordering.
Direct thermal vs thermal transfer
Both print with heat. The difference is whether a ribbon is used.
- No ink, toner or ribbon
- Cheapest per label, simplest to use
- Best for shipping labels and short-term barcodes
- Can fade with heat, sunlight or long storage
- Shop: direct thermal labels
- Needs a thermal transfer printer and ribbon
- Longer lasting and more resistant
- Best for asset, pallet and long-life labels
- Shop: 100 x 150mm thermal transfer labels
Rolls, fanfold and core sizes
Check what your printer takes before you order.
- Sit inside most desktop label printers
- Easy to store and swap
- 350 or 500 labels per roll
- Flat stack feeds from behind the printer
- More labels between changes
- Great for busy dispatch benches
- The core is the tube in the middle of a roll
- Small cores (25mm / 1in) suit most desktop printers
- 76mm (3in) cores hold more labels; use an industrial printer or an external roll holder
Choosing a thermal label printer
All three print 4in-wide labels, so they handle shipping, carton and barcode labels.
 M6 |
 A300ROLL OR FANFOLD |
 M9HD |
|
|---|---|---|---|
| Resolution | 203 dpi | 300 dpi | 300 dpi |
| Speed | 152mm/s | 152mm/s | 72 labels/min (4x6) |
| Label width | Up to 108mm | 4in labels and smaller | 1 to 4.3in wide |
| Labels | Rolls up to 127mm diameter | Roll inside (up to 500 4x6 labels) or fanfold from the back | Auto label-size detection, label holder included |
| Connection | USB | USB · Win, Mac, Linux, Chromebook* | USB · Win, Mac, Chromebook |
| Best for | Everyday shipping labels | High volume and sharp barcodes | Compact desks, mixed label sizes |
| View M6 | View A300 | View M9HD |
*A300 on Chromebook prints the 4x6 layout only. Specs from the manufacturers.
Plenty for shipping labels and standard barcodes.
Sharper small text and tiny barcodes, e.g. 30 x 15mm.
One printer covers shipping, carton and barcode labels.
Shop all thermal label printers →
Thermal label FAQs
Can I print thermal labels on a normal printer?
▾
No. Direct thermal labels need a thermal label printer. For inkjet or laser printers, use A4 label sheets.
Is A6 the same as 4x6?
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Close enough for labels. A6 is 105 x 148mm and 4x6in is about 102 x 152mm, so both are sold as 100 x 150mm thermal labels.
Why are my thermal labels printing blank?
▾
The roll may be loaded upside down, so the heat-sensitive side faces away from the print head. Scratch the label with a fingernail: the side that marks dark is the printing side.
How long do direct thermal labels last?
▾
Long enough for shipping. They can fade over time, especially in heat or sunlight, so use thermal transfer labels for anything that needs to last for years.
Which label should I use for Amazon FBA barcodes?
▾
Small product labels such as 50 x 25mm or 60 x 40mm work well for FNSKU barcodes, and 100 x 150mm labels for carton labels. Pack items in FBA poly bags.
Can I buy thermal labels in bulk?
▾
Yes. Most sizes come in multi-roll packs, and 100 x 150mm labels come in wholesale cartons. Contact us for large orders.