tooleancheck.com
EAN Check
Generate and validate barcode check digits - even 1 million+ at once
EAN Check is a 100% free barcode check digit calculator and validator. Generate missing check digits or validate existing barcodes in bulk - confirmed to handle well above 1 million barcodes in a single call. Supports GTIN-8, UPC-A, EAN-13, GTIN-14, ITF-14, and more. Simple to use, powerful at scale. Used by sellers, warehouse staff, and logistics teams worldwide.
Features
Generate check digits and validate barcodes in one tool
Bulk processing: tested with 1 million+ barcodes per call
GTIN-8, UPC-A, EAN-13, GTIN-14 & ITF-14 support
GS1-standards-compliant calculations
Accepts newline and comma-separated input
Order-preserving output with instant results
Screenshots
Tech Stack
Pricing
free
Free with ads