EAN-13 and UPC-A Size Specifications

The standard dimensions of EAN-13 and UPC-A barcodes for retail use is 25.93mm x 37.29mm. This is otherwise referred to as 100% magnification or SC0.  100% Magnification is optimal for retail scanning environments and reduces the likelihood of scanning errors. Included in these dimensions is the negative or white space either side of the bars. These areas are known as the “quiet zones”. The left quiet zone is 3.63mm and the right quite zone is 2.31mm. Quiet zones are a critical part of a barcode and essentially tells the scanner where the barcode starts and ends. Barcodes with the quiet zones removed will fail to scan.

All standard EAN-13 and UPC-A packages supplied by Oz Barcodes are generated at 100% Magnification in three digital image formats: EPS, JPEG and TIFF at 2450, 600 and 300 DPI respectively.

Re-sizing your barcodes.

GS1 advises that barcodes are printed within the 80% – 200% Magnification range.  If your product packaging can accommodate it we recommend following this guideline.  Barcodes can be further re-sized to suit packaging space limitations but there are a few considerations to take into account.  

– Barcodes that are below 80% Magnification will not pass a barcode verification report required by some larger retailers. See Barcode Verification.

– Barcodes sized too small or with a low printing resolution may fail to scan.

– The EPS image file we supply offers the best flexibility for re-sizing as the image quality is not affected by rescaling.

Re-sizing of the supplied barcode images can be achieved by using photo editing software such as Adobe Illustrator or Photoshop. The barcode image/layer can be selected whole and re-scaled to the required size e.g. to meet the recommended minimum 80% Magnification the barcode image/layer can be scaled to 80% of its original size, or 82% to be on the safe side (to counter print bleed or minor printing inaccuracy). We recommend using the 2450 DPI EPS version for re-sizing to avoid loss of image quality.

Barcode Truncation

Truncation is a common method of re-sizing a barcode by removing a portion from the top of the barcode. This method gives the barcode are more rectangular appearance. For example a barcode at 100% magnification can be truncated (cut across the top) so the bar height meets the 80% minimum above 18.28mm. Truncation is preferred to altering dimensions by dragging the edges around which can affect the barcode proportions.

Some products like pens and pencils will have a heavily truncated barcode printed on them. While they can scan at P.O.S. tiny barcodes like this will not pass barcode verification. Product owners should be aware that in some cases retailers may reject products with smaller barcodes while other retailers will still accept them. We advise checking your retailer’s supplier guidelines to ensure you meet the appropriate requirements.

Magnification Table

MagnificationBar Width (mm)Bar Height (mm)L Quiet Zone (mm)R Quiet Zone (mm)
80% (SC0)20.0818.282.901.85
90% (SC1)28.2220.573.272.08
100% (SC2)31.3522.853.632.31
110% (SC3)34.4925.143.992.54
120% (SC4)37.6227.424.362.77
135% (SC5)42.3230.854.903.12
150% (SC6)47.0334.285.453.47
165% (SC7)51.7337.705.993.81
185% (SC8)58.0042.276.724.27
200% (SC9)62.7045.707.264.62