Barcode Check Digit Calculator
Calculate UPC-A and EAN-13 check digits from the first 11 or 12 digits, or validate complete codes.
What this tool does
Calculate UPC-A and EAN-13 check digits from the first 11 or 12 digits, or validate complete codes.
Where this tool is useful
Validate common retail barcode numbers using alternating modulo-10 weights.
Example or format details
Validate common retail barcode numbers using alternating modulo-10 weights.
How to use Barcode Check Digit Calculator
- 1
Paste the technical input into the form and choose any relevant algorithm or formatting options.
- 2
Adjust the fields and options, then select Run tool.
- 3
Inspect the actual result. Copy the text or download the generated file when appropriate.
Privacy and processing
Entered content and chosen files are processed locally in your browser. No conversion request is sent to a freedropper server.
Common questions
What can I use this for?
Validate common retail barcode numbers using alternating modulo-10 weights.
What does the tool accept?
Paste the technical input into the form and choose any relevant algorithm or formatting options.
What should I check before using the output?
Check the accepted input, output format and settings before reusing the result. Validate common retail barcode numbers using alternating modulo-10 weights.
Does my input leave my device?
The utility runs in your browser. Selected content is not transmitted to a freedropper conversion service.
How can I reuse the result?
Copy the output or use the download control when the tool produces a file. Check the target application accepts the resulting syntax or file type.