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Interleaved 2 of 5 is a numeric-only symbology used in some cartons, logistics environments, and internal stock systems. Bars represent one digit while the spaces between them represent the next digit, so the numeric content is encoded in pairs.
The data must contain digits, and the symbol’s physical dimensions and quiet zones matter in scanning. Do not use plain ITF for a trade unit if a logistics partner specifically requires ITF-14 and its associated packaging rules.
How to use this tool
- Enter a numeric value; an odd digit count is padded on the left if needed.
- Generate the bars and check the human-readable value.
- Scan the exported image using the receiving system.
Practical guidance
Interleaved 2 of 5 encodes digits in pairs and is used in some logistics and industrial applications. This implementation accepts numeric values only and pads an odd-length input with a leading zero so the digits can be paired. Confirm whether that behaviour matches the data format expected by your scanner and receiving system.
Checks before you use the output
Because the tool may add a leading zero for an odd-length value, inspect the readable caption and source record before using it in a workflow where the exact data length matters. Keep bars crisp, ensure adequate quiet zones, and test on a scanner configured for Interleaved 2 of 5 rather than assuming all barcode readers interpret it the same way.
Questions and answers
Can Interleaved 2 of 5 encode letters?
No. It is designed for digits only.
Is ITF the same as ITF-14?
ITF-14 is a specific 14-digit trade-item format commonly used on outer packaging, while generic ITF is a broader symbology.
Why did the barcode add a zero at the beginning?
Interleaved 2 of 5 encodes digits in pairs, so an odd-length input is padded with a leading zero in this tool. Confirm that the resulting value is acceptable for your system.