QR Code Size Guide: Minimum Sizes for Every Use Case

Size matters when it comes to QR codes. Too small and they won't scan; too large and you're wasting space. Here's how to get it right every time.

The 10:1 Rule

A good rule of thumb: the scanning distance should be no more than 10 times the width of the QR code. A 1-inch QR code can be scanned from about 10 inches away.

Size Recommendations by Use Case

• **Business Cards**
• Minimum: 0.8 inches (2 cm)
• Recommended: 1 inch (2.5 cm)

• **Flyers and Brochures**
• Minimum: 1 inch (2.5 cm)
• Recommended: 1.2 inches (3 cm)

• **Posters (viewing distance 3-4 feet)**
• Minimum: 2 inches (5 cm)
• Recommended: 3 inches (7.5 cm)

• **Banners and Signs (viewing distance 6-8 feet)**
• Minimum: 4 inches (10 cm)
• Recommended: 6 inches (15 cm)

• **Billboards**
• Calculate based on typical viewing distance. For highway billboards, QR codes are often impractical due to viewing distance and speed.

Factors Affecting Scannability

• Code complexity (more data = denser pattern)
• Printing quality
• Contrast
• Lighting conditions
• Phone camera quality

Testing Your Size

Always print a test and scan from the intended distance before committing to a full print run.

Generate print-ready QR codes in any size with Quality QR.