Enter 11 or 12 digits
Use 11 digits to calculate a check digit, or enter a full 12-digit UPC-A.
→UPC-A barcode tool
UPC-A Generator
Generate UPC-A barcodes from 11-digit product data or validate a complete 12-digit UPC, with automatic check-digit calculation and SVG or PNG export.
Automatic check digitCalculate the 12th digit
Built-in validationVerify complete UPC-A codes
SVG & PNG exportHigh-quality barcode output
How to use the UPC-A Generator
Create your UPC-A barcode in four simple steps.
Validate or calculate
Barlora calculates or checks the UPC-A check digit automatically.
→Configure output
Set size, readable text and quiet-zone options.
→Generate & download
Preview and export your UPC-A barcode as SVG or PNG.
Why this tool helps
Prepare consistent UPC-A barcode graphics for product data and packaging workflows.
Retail product barcodes
Create UPC-A barcode graphics for product and packaging workflows.
Product data preparation
Calculate the final check digit from an 11-digit product number.
UPC verification
Check whether an existing 12-digit UPC-A has the correct check digit.
Print-ready output
Export SVG or PNG files for labels and packaging.
UPC-A rules & validation
Use an 11-digit source or a complete 12-digit value, then export the same valid barcode state you preview.
11-digit input
Enter 11 digits and Barlora calculates the final check digit.
12-digit validation
Enter a complete UPC-A and verify whether its check digit is correct.
SVG & PNG export
Download high-quality vector or raster barcode output.
UPC-A contains 12 numeric digits. The final digit is a check digit calculated from the first 11 digits. Barlora can calculate or validate the check digit, but it does not assign official UPC or GTIN identifiers.
Frequently asked questions
Find answers to common questions about UPC-A.
What is UPC-A?⌄
UPC-A is a 12-digit retail barcode format commonly used for product identification.
Can I generate UPC-A from 11 digits?⌄
Yes. Barlora calculates the final check digit from your 11-digit product data and renders the full UPC-A.
How is the UPC-A check digit calculated?⌄
It uses a weighted checksum across the first 11 digits so the completed 12-digit value reaches the required checksum.
Why is my 12-digit UPC invalid?⌄
The value may have an incorrect length, non-numeric characters, or a check digit that does not match the first 11 digits.
Does Barlora issue official UPC or GTIN numbers?⌄
No. Barlora calculates and renders barcode graphics from numbers you provide; it does not issue UPC numbers, GTIN-12 numbers, GS1 company prefixes or official product identifiers.
Can I download UPC-A as SVG or PNG?⌄
Yes. Download the same valid UPC-A barcode preview as SVG or PNG.
UPC-A commonly encodes a 12-digit GTIN and is commonly used in North America; EAN-13 uses 13 digits and is widely used internationally. Barlora calculates and renders barcode graphics from values you provide, but does not issue UPC numbers, GTIN-12 numbers, GS1 company prefixes or official product identifiers.
Create a UPC-A barcode today.
Fast check-digit calculation. Clear validation. Print-ready output.