What Is ITF-14?
Definition
ITF-14 (Interleaved 2 of 5) is a robust 1D barcode carrying the 14-digit GTIN-14, used on cases and cartons. The name "Interleaved 2 of 5" comes from encoding data in an interlocked pattern of bars and spaces.
ITF-14 identifies not the individual retail unit but the trade pack that groups those units. For example, a shelf product carries an EAN-13 while a case of 24 of that product carries an ITF-14.
To validate an ITF-14 number, use the ITF-14 checker.
Structure
The first of ITF-14's 14 digits is usually an "indicator" (packaging level) digit; values 1-8 express different grouping levels and 9 indicates variable measure. The remaining digits derive from the inner item's GTIN.
The last digit is a check digit computed with GS1 modulo-10, just like other GTINs. So ITF-14's check-digit logic is the same as in the GTIN validator.
Interleaved 2 of 5 only encodes digits and requires an even digit count; ITF-14 is exactly 14 digits, satisfying this condition.
Why the bearer bar exists
ITF-14 is usually printed with a thick frame around it called a "bearer bar". This frame helps reduce misreads caused by partial printing and edge damage.
Interleaved 2 of 5 is sensitive to missing or spread ink at the edges; the bearer bar lowers this risk by helping the scanner see the start and end of the code clearly.
So the bearer bar is not decoration but a functional component for reliability, recommended by the standards.
Usage and printing
ITF-14 prints well directly onto corrugated cardboard, which is practical in carton production because it avoids printing and applying a separate label. It's designed to work reliably even on rough surfaces where ink can spread.
In warehousing and logistics, ITF-14 automates fast case counts, shipping and goods-receipt processes. For pallets and higher-level units, richer barcodes like GS1-128 are preferred.
To produce an ITF-14 image, use the barcode generator.
Difference from EAN-13 and limits
EAN-13 is for the individual retail unit (GTIN-13) and is scanned at checkout; ITF-14 carries the case-level GTIN-14 and is designed to withstand rougher printing conditions. They identify different packaging levels.
The GTIN inside an ITF-14 relates to the individual product's GTIN but differs via the indicator digit to denote the case level.
A valid ITF-14 check digit does not show the inner number is registered to a real product; it only verifies technical consistency. For registration, you apply to authorities such as GS1.