QR Code Size Guide — How Big Should a QR Code Be?
Learn the ideal QR code size for business cards, posters, packaging, and signage. Includes a scanning distance calculator and print size chart.
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How to Choose the Right QR Code Size
Determine Scanning Distance
How far will the scanner be? Close-up (business cards) = 1+ inch. Medium (table tents) = 2-3 inches. Far (posters) = 4-8 inches.
Apply the 10:1 Rule
Divide the scanning distance in inches by 10 to get the minimum QR code width. A 30-inch scanning distance needs at least a 3-inch QR code.
Download at the Right Resolution
Use SVG for print (scales to any size). Use PNG at 512px+ for screen. Print at 300 DPI minimum for sharp results.
Who Uses This
Real-world use cases for businesses, creators, and organizations.
Business Cards
Minimum 1 inch (2.5 cm). Scanned at arm's length — high detail needed.
Table Tents & Counter Signs
2-3 inches (5-7.5 cm). Scanned from 1-2 feet away.
Posters & Flyers
4-6 inches (10-15 cm). Scanned from several feet away.
Banners & Billboards
8+ inches (20+ cm). Must be scannable from 6+ feet away.
Where to Place It
Always test before printing
Scan the QR code from the expected distance to verify readability.
Include a quiet zone
Leave at least 4 modules of white space around the QR code.
Use high contrast
Dark dots on light background for maximum scanability in any lighting.
Frequently Asked Questions
What is the minimum size for a scannable QR code?
The absolute minimum is about 0.8 inches (2 cm) for close-up scanning. For reliable scanning in most conditions, use at least 1 inch (2.5 cm). Smaller sizes may fail on older phones or in poor lighting.
What is the 10:1 ratio rule for QR codes?
Divide the expected scanning distance (in the same unit) by 10 to get the minimum QR code dimension. Example: if someone scans from 40 inches away, the QR code should be at least 4 inches wide.
Does the amount of data affect the minimum size?
Yes. More data = more modules = finer detail. A URL QR code with a short link can be printed smaller than one encoding a full vCard with 15 fields. Use URL shorteners if you need a smaller print size.
What resolution should I download?
Download as SVG for any print use — it scales perfectly to any size. For PNG, download at least 512px and resize in your design tool. Print at 300 DPI or higher for sharp barcode edges.
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