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23-09-2026 · Quick Cropper
ZPL labels come in a handful of standard sizes. Knowing which one you have helps you print them correctly with the ZPL to PDF converter.
This quick ZPL label sizes guide covers 4x6, 4x4 and 100x150 mm rolls and the settings for each one.
The standard shipping label used by Amazon and most couriers.
The metric version of the shipping label, almost the same size.
Smaller shipping and product labels.
Barcode and product stickers.
The same ZPL looks different at 152, 203, 300 or 600 dpi. Shipping labels are usually written for 203 dpi printers.
The converter reads the size from the ZPL commands when they are present, or estimates it from the label content, and you can change it any time.
If you are not sure which size your labels are, measure one label with a ruler, not including the gap between labels or the backing paper edges. Measure the width across the roll and the length along the roll. A label that measures about 102 x 152 mm is a 4 x 6 inch label, while 100 x 150 mm is the metric version. The difference is small, but choosing the matching size helps the label print without clipping or extra white space at the edges.
4 x 6 inches or 100 x 150 mm, used by most couriers and marketplaces.
4 x 4 or 4 x 3 inches for some couriers and small parcels.
2 x 1 inches or similar small sizes for price and SKU labels.
3 x 2 inches or 4 x 2 inches for warehouse locations.
DPI, or dots per inch, tells you how many tiny dots the printer can place in one inch. A 203 dpi printer places 203 dots per inch, and a 300 dpi printer places 300. ZPL files describe positions in dots, so the same file needs to be converted with the same dpi as the printer it was designed for. If the dpi is wrong, the label content is scaled up or down and may no longer fit the label.
If the size you choose is smaller than the real label, content near the edges is cut off. If it is larger, the label is surrounded by empty space and may print shifted on the roll. Both problems are easy to spot in the preview, so always check the preview before printing a large batch. Once you find the right size and dpi for a particular courier or marketplace, note it down for future batches.
Is 4 x 6 the same as 100 x 150 mm? They are very close, but not identical. Choose the one that matches your label roll.
Can I enter a custom size? Yes. Enter the exact width and height if your label is not a standard size.
Which size do most couriers use in India? Most courier and marketplace shipping labels use the standard four by six inch format, or its metric version. Smaller formats are usually used for product stickers, shelf labels and some special services, so check the courier's instructions if you are unsure.
Does the tool remember my choice? Pick the size that matches your roll each time you convert, and keep a note of the settings that work for each courier so the choice is quick.
If you work with several couriers, marketplaces or label types, keep a simple reference sheet listing the label size and dpi for each one. When a new file arrives, you can check the sheet and pick the right settings immediately, without trial and error. Share the sheet with anyone else who prints labels, so everyone uses the same settings every time. If you also make labels yourself, the Shipping Label Generator offers the same 4 x 6 inch, 4 x 4 inch and A4 sizes, and Crop PDF can trim a PDF label to 4 × 6 with its shape lock.
Most shipping ZPL is 4 × 6 inches at 203 dpi. For anything else, pick the size from the list or enter a custom size in the ZPL to PDF converter.