Creating UPC-A Barcode with Add-On Symbol in Microsoft Office Word Application
This guide provides structured instructions for generating UPC-A with supplementary add‑on symbols, encoding valid data characters, and managing check digits in the Microsoft Office Word Application using a professional barcode generator add‑in.
Create UPC-A with Two-Digit Add-On in Microsoft Office Word Application
A standard UPC-A barcode can be extended with a two‑digit or five‑digit add‑on symbol (supplementary barcode) for additional product information.
In the Word Barcode Generator Add‑in, you combine main UPC-A data and add‑on data using a plus sign (+) as the separator.
Example format: 12345678901+12, where 12345678901 is the main UPC-A data and 12 is the two‑digit add‑on.
The UPC-A barcode with a two‑digit add‑on is inserted into the active Word document.When the linked field value is modified, the barcode updates automatically.
Example format: 12345678901+12, where 12345678901 is the main UPC-A data and 12 is the two‑digit add‑on.
- In a Word content control or linked document field (e.g., a text field linked to barcode data), enter the value 12345678901+12.
- In the Barcode Settings pane of the Microsoft Office Word Application, set the data source to reference the linked field.
- From the Barcode Type dropdown list, select UPC‑A +2.
- Click the Generate button to create the barcode.
The UPC-A barcode with a two‑digit add‑on is inserted into the active Word document.When the linked field value is modified, the barcode updates automatically.
Note: Using any separator other than the plus sign (+) will cause encoding failure in the Word barcode add‑in.
Customize UPC-A Add-On Barcode in Word
The Word Barcode Generator Add‑in supports full customization of UPC-A add‑on barcodes.
- Navigate to the 1D Barcode tab in the Word barcode settings panel.
- Locate the EAN / UPC configuration group.
- Adjust available properties to customize add‑on appearance and behavior.
UPC-A Barcode Data Characters Encoding in Microsoft Office Word Application
UPC-A Data Character Set
UPC-A supports numeric data encoding only. Valid input characters are digits from 0 to 9.
A standard UPC-A barcode is structured into four logical parts:
A standard UPC-A barcode is structured into four logical parts:
- Number system digit
- Manufacturer code
- Product code
- Check digit
Note: Entering letters or symbols in the data field will generate an invalid, unscannable barcode in the Word document.
UPC-A Digit Length
Each standard UPC-A barcode consists of 12 numeric digits. The first 11 digits represent the core GS1 (Global Standard 1) business message. The 12th digit is a mandatory check digit.
UPC-A may also include a supplementary add‑on of 2 or 5 digits.
In the Microsoft Office Word Application barcode add‑in, you may enter either:
In the Microsoft Office Word Application barcode add‑in, you may enter either:
- 11 main digits plus add‑on data, e.g., 12345678912+12 or 12345678912+12345
- 12 main digits plus add‑on data, e.g., 123456789128+12 or 123456789128+12345
UPC-A Check Digit in Microsoft Office Word Application
The UPC-A check digit is computed using a modulo 10 algorithm based on the weighted sum of the first 11 digits.
In the Word Barcode Generator Add‑in:
In the Word Barcode Generator Add‑in:
- You are not required to manually enter the check digit.
- The software automatically calculates the valid check digit from the first 11 digits.
- If you provide a full 12‑digit string, the add‑in ignores the 12th digit and recalculates it.
Note: Manually entering an incorrect check digit will not affect the final barcode, as the add‑in always overrides it with a valid computed value.
Common Asked Questions
What is a GTIN-12 UPC-A barcode?
GTIN-12 is a 12 digits Global Trade Item Number. It is usually encoded in UPC-A barcode. The 12 digits Global Trade Item Number includes 11 digits of data message,
and one digit of check sum digit.
Using Word Barcode Generation add-in, you can input 12-digit GS1 numeric data or 13-digits data with checksum digit in Word documents.
What is the difference between UPC-A and UPC-E?
Both of UPC-A and UPC-E are UPC barcode.
UPC-A is a 12-digit barcode, and UPC-E is a compressed UPC-A with 6 digits code. The UPC-E will be used in limited space for a barcode.
You can create both UPC-A and UPC-E images in Microsoft Word documents using Office 365, 2021, 2019, 2016 applications.
What is the difference between EAN-13 and UPC-A?
UPC-A Format barcodes have traditionally been used in the North America (USA and Canada),
whereas EAN-13 format barcodes have been used throughout the rest of the world.
Word Barcode Generator add-in supports both UPC and EAN with add-on symbol barcode generation in Microsoft Office Word software.
What is the minimum & maximum size for a UPC-A barcode?
- The Minimum X-dimension for the UPC-A barcode is 0.0104 inches.
- The Maximum X-dimension for the UPC-A barcode is 0.0260 inches

