Free Online Barcode Generator Tools
Select a specialized generator or calculator tailored for your industry, label printer, or e-commerce marketplace. Pure client-side processing guarantees your inventory data stays private.
UPC-A Barcode Generator
Generate standard 12-digit North American retail barcodes with automatic check digit calculation and 300 DPI vector output.
Amazon FBA FNSKU Label Generator
Create scan-compliant Amazon FBA product barcode stickers formatted for 4x6 thermal printers and standard 30-up Avery sheets.
ISBN Book Barcode Generator
Bookland EAN-13 barcodes for paperback and hardcover books on Amazon KDP and IngramSpark with optional 5-digit price add-ons.
Code 128 Shipping Label Barcode
High-density alphanumeric barcodes for warehouse logistics, pallet routing tags, carton tracking, and serial inventory.
Etsy & Shopify Product Label Maker
Design printable product stickers with brand name, product title, custom SKU barcode, variant options, and retail pricing.
Retail Price Tag with Barcode
Generate store shelf tags and apparel hang tags with custom currency selector ($ USD and ₹ INR), product name, and barcode.
EAN-13 Barcode Generator (India)
Create 13-digit retail barcode images for Indian products with official 890 country prefix support and checksum verification.
Flipkart, Meesho & Amazon India Labels
Print compliant seller packaging stickers matching Indian marketplace dispatch guidelines and thermal printer rolls.
GS1 India Barcode Registration Guide
Comprehensive reference guide explaining the official GS1 India application process, documents, fee slabs, and verification.
Medicine & Pharma Barcode Generator
Generate GS1-compliant Code 128 and 2D Data Matrix barcodes with GTIN, batch number, manufacturing date, and expiry date.
Kirana & Retail Inventory Barcode Maker
Quick, durable barcode stickers for neighborhood grocery stores, kirana shops, and mini-marts with instant laser POS scanning.
UPC-A Check Digit Calculator
Enter any 11-digit UPC number to compute the mathematically exact modulo-10 12th check digit with formula breakdown.
EAN-13 Check Digit Calculator
Calculate the 13th checksum digit for international GTIN-13 numbers with alternating odd/even weight calculation steps.
UPC-A to EAN-13 Converter
Convert 12-digit US and Canadian UPC barcodes to global 13-digit EAN/GTIN standards without changing the check digit.
Barcode Number Validator
Verify syntax, length, character set, country of origin prefix, and mathematical checksum before committing to print.
Bulk Barcode Generator (CSV / Excel)
Upload a spreadsheet or paste 1000+ codes. Generates a multi-page printable PDF sheet in batches without freezing your browser.
Avery Barcode Label Sheet Templates
Exact print templates for Avery 5160 (30-up), 5163 (10-up), 5167 (80-up), L7160 (21-up), and A4 24-up / 65-up sheets.
How to Choose the Right Barcode Tool for Your Business
Selecting the correct barcode format is critical to ensure that your products scan smoothly at physical retail cash registers, pass e-commerce warehouse intake inspections, and comply with international supply chain standards. While all barcodes represent encoded data in optical patterns, different formats have strict physical and mathematical requirements.
1. Retail Products Sold in the USA and Canada
If you are selling consumer goods in US supermarkets, department stores, or brick-and-mortar retail shops, the industry standard is UPC-A (Universal Product Code). UPC-A encodes exactly 12 numerical digits: a 1-digit number system character, a 5-digit manufacturer prefix, a 5-digit product code, and a final 1-digit modulo-10 check digit. Use our UPC-A Barcode Generator to generate print-ready vector files. If you need to verify an 11-digit number prior to printing, our UPC Check Digit Calculator computes the exact required checksum.
2. Retail Products Sold in India and Globally
Outside the United States and Canada, the universal retail standard is EAN-13 (European Article Number / International Article Number). In India, consumer packaged goods (CPG) feature EAN-13 barcodes beginning with the country prefix 890. Use our EAN-13 Barcode Generator (India) to create compliant product labels. For business owners seeking official brand prefix registration, read our detailed GS1 India Barcode Guide.
3. Amazon FBA and Marketplace Sellers
Amazon fulfillment centers require every unit sent into Fulfillment by Amazon (FBA) to bear a unique scannable barcode. Unless you have commingled inventory enabled, Amazon assigns an FNSKU (Fulfillment Network Stock Keeping Unit) beginning with X00.... This code must be printed using Code 128 symbology on a removable sticker. Use our Amazon FBA FNSKU Label Generator to print directly onto standard 4x6 inch thermal rolls or 30-up Avery sheets. For sellers in India, our Flipkart, Meesho & Amazon India Label Maker formats labels to marketplace transport specs.
4. Internal Warehouse, Logistics & Shipping
For inventory tracking, pallet tagging, bin labeling, and shipping documents, Code 128 is the industry standard. Code 128 is a high-density linear barcode capable of encoding all 128 ASCII characters, including letters, digits, and punctuation marks. It achieves maximum density through automatic subset switching. Use our Code 128 Shipping Label Tool for high-speed laser and thermal printing.