The Dewx Barcode Generator creates barcodes in Code128, EAN-13, and UPC-A formats. Enter your text or number, select a format, and get instant validation, check digit calculation, and encoding details. Free to use, no signup required.
Barcode Generator
Generate barcodes in Code128, EAN-13, and UPC-A formats.
FAQ
What barcode formats does this tool support?
This tool supports Code 128 (alphanumeric, any ASCII character), EAN-13 (13 digits, used internationally for retail), and UPC-A (12 digits, used in North America for retail). Each format has different validation rules and use cases.
What is the difference between Code 128, EAN-13, and UPC-A?
Code 128 is a high-density barcode that can encode any ASCII character, making it versatile for shipping and logistics. EAN-13 is a 13-digit numeric code used worldwide for retail products. UPC-A is a 12-digit numeric code used primarily in the United States and Canada for retail scanning.
How is the check digit calculated?
For EAN-13, the check digit is calculated by alternately multiplying digits by 1 and 3, summing them, and taking the value needed to reach the next multiple of 10. UPC-A uses a similar modulo-10 algorithm. Code 128 uses a weighted modulo-103 checksum.
Why use Dewx instead of a basic barcode generator?
Dewx provides format validation, check digit calculation, encoding details, and support for multiple barcode types in one tool. Beyond free tools, Dewx is a complete business operating system with CRM, unified inbox, AI assistant, and automation.
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