Code-128 Barcode Generator
Shipping, inventory, general purpose (most popular)
Code-128
What is Code-128?Linear Codes › Code-128
What is a Code-128 barcode?
Code 128 is a compact linear barcode that can hold letters, digits and punctuation. Warehouses, shipping companies, factories and shops use it for item numbers, serial numbers, order IDs and internal labels. If you are not sure which barcode to use for your own system, Code 128 is usually a safe choice.
It has three character sets, and set C packs two digits into each symbol, so long numbers stay short. Every Code 128 barcode ends with a modulo 103 check character that scanners use to catch misreads. Our generator adds it automatically, and it is not shown in the text under the bars.
What data can Code-128 hold?
Any standard ASCII character: A-Z, a-z, 0-9, space and common punctuation. Accented letters and emoji are not supported, the check character is calculated for you, and we warn you if a value is longer than 80 characters.
Recommended size
Leave a blank quiet zone of at least 10 times the narrowest bar (the X-dimension) on both sides. An X-dimension of about 0.25 mm to 0.5 mm suits most labels; test-print one before a big run.
More Linear Codes barcodes
How to Create a Barcode in 3 Steps
Choose a barcode type
Select a category on the left (e.g. Linear Codes), then the exact type like Code-128.
Enter data & customise
Type your data — we check it live and add check digits. Adjust size, font and colors.
Download or print
Get PNG, JPG, SVG, PDF or EPS, or print a full sheet of labels in one click.
Why Use QRCodeChamp Barcode Generator
125+ barcode types
Every linear, 2D, GS1, postal, healthcare and payment code.
Live validation
Friendly errors with one-click fixes and automatic check digits.
Print-ready PDF
Exact mm sizes, label sheets (Avery, A4, 4×6 thermal).
Bulk barcodes
Paste a list or generate number sequences.
Choose the Type of Barcode You Need
Not sure which barcode to use? Start with what you need it for — we’ll pick the right type.
Frequently Asked Questions
Yes. Code 128 supports upper and lowercase letters, digits and punctuation, so you can type your data as it is.
Code 128 uses a modulo 103 check character. Our generator calculates and adds it automatically; it is part of the bars but is not printed in the text.
GS1-128 is Code 128 with a special FNC1 start and data written as GS1 Application Identifiers, such as (01) for a GTIN. Use plain Code 128 for your own labels and GS1-128 when a trading partner asks for GS1 data.
Yes. Enter one value per line or generate a number sequence, then download the barcodes or print them on a label-sheet PDF.