Enter a complete GTIN
Use a full 8, 12, 13, or 14-digit GTIN exactly as supplied.
→GTIN validation tool
GTIN Validator
Validate GTIN-8, GTIN-12, GTIN-13, or GTIN-14 numbers and check whether the final digit is correct.
Identify GTIN typeRecognize length from complete input
Validate check digitVerify the final GS1 Mod-10 digit
Text input onlyLeading zeros stay intact
GTIN validation
Validate a complete GTIN
Enter the complete number to identify its GTIN length and check the final GS1 Mod-10 digit.
Values stay as text. Spaces, letters, emoji, and non-ASCII digits are not accepted.
●Valid
GTIN validation result
Review the GTIN type, supplied final digit, expected final digit, and validation state.
●Valid
- Input
- 5901234123457
- GTIN Type
- GTIN-13
- Data Digits
- 590123412345
- Provided Check Digit
- 7
- Expected Check Digit
- 7
- Validation Status
- Valid
How to use the GTIN Validator
Validate a complete GTIN in four clear steps.
Identify the GTIN length
Barlora identifies the GTIN type from its complete length.
→Check the final digit
The shared GS1 Mod-10 core calculates the expected final digit.
→Review the result
See whether the provided check digit is valid.
Why this tool helps
Check GTIN structure and final digits before moving to an appropriate barcode or product workflow.
Validate GTIN numbers
Check the final digit on complete GTIN values before a later workflow.
Catch check-digit errors
See the expected digit and the supplied digit when a complete code is invalid.
Identify GTIN length
Recognize GTIN-8, GTIN-12, GTIN-13, or GTIN-14 from length only.
Shared GS1 Mod-10 rules
Use the same core check-digit logic across Barlora validation tools.
GTIN rules
GTIN identifies product-number structure. Barcode symbology is how that data may be encoded visually.
GTIN-8
A complete GTIN-8 contains 8 digits; the final position is the check digit.
GTIN-12
A 12-digit GTIN is commonly represented as UPC-A in retail workflows.
GTIN-13
A 13-digit GTIN is commonly represented as EAN-13 in retail workflows.
GTIN-14
A 14-digit GTIN may be represented using ITF-14 or GS1-128 depending on workflow.
Frequently asked questions
Find answers about GTIN structure, check digits, and barcode representations.
What is a GTIN?
A GTIN is a product-number structure with a final check digit. This validator checks complete GTIN values only.
Which GTIN lengths does this validator support?
It supports complete GTIN-8, GTIN-12, GTIN-13, and GTIN-14 values.
How is a GTIN check digit validated?
Barlora uses the shared GS1 Mod-10 rules to calculate the expected final digit from the preceding data digits.
Is GTIN-12 the same as UPC-A?
GTIN-12 is a product-number structure commonly represented as UPC-A. The number structure and barcode symbology are not the same thing.
Is GTIN-13 the same as EAN-13?
GTIN-13 is a product-number structure commonly represented as EAN-13. The validator identifies the GTIN length only.
Is GTIN-14 the same as ITF-14?
GTIN-14 is a number structure. ITF-14 is one barcode symbology that may represent it in relevant packaging workflows.
Does Barlora issue GTIN numbers?
No. Barlora does not issue GTINs, assign GS1 company prefixes, register products, or guarantee marketplace acceptance.
Validate a GTIN in seconds.
Identify the length, check the final digit, and copy a valid complete value.