GTIN Check Digit Calculator
Calculate the final modulo-10 check digit for 7-, 11-, 12- or 13-digit GTIN bases.
Free browser tools
Plan, validate and troubleshoot identification data
These tools run in your browser. They help with arithmetic, consistency and planning; they do not issue official identifiers or certify barcode compliance.
GTIN Validator & Format Identifier
Check the length, numeric structure and GS1 modulo-10 check digit of GTIN-8, GTIN-12, GTIN-13 or GTIN-14.
GS1 Modulo-10 Check Digit Tool
Calculate or verify the common GS1 modulo-10 check digit for a numeric base string.
SSCC Check Digit Calculator
Calculate the check digit for a 17-digit SSCC base.
Internal SKU Builder
Create a simple internal SKU pattern from user-entered components. This does not create a GTIN or official identifier.
SKU Consistency Checker
Review a list of internal SKUs for inconsistent length, spacing, punctuation and character patterns.
Identifier Mapping Worksheet
Map internal SKUs, GTINs, serials, lots, asset tags and other identifiers to one business object.
Package Hierarchy Planner
Document each, inner-pack, case and pallet levels and the identifiers used at each level.
Lot & Serial Traceability Planner
Plan which events capture lot, batch, serial and date attributes through receipt, storage, issue, return and disposal.
Barcode Scan Troubleshooter
Use a structured checklist to narrow likely causes of a barcode that will not scan reliably.
Label Readiness Review
Score a draft label against basic readability, placement and production-risk checks.
RFID vs Barcode Decision Worksheet
Compare optical and radio identification approaches using your workflow requirements.
2D Barcode Readiness Assessment
Assess scanner, software, data, printing and partner readiness for a 2D barcode rollout.
Direct Part Marking Planning Worksheet
Review lifecycle, surface, environment and verification questions before considering direct marking.
Product Identification Record Builder
Create a local, printable record of the identifiers and packaging relationships for a product or asset.