4/26/2026 · 4 min read
QR Code Size for Printing: How Big Should It Be?
A QR code that's too small won't scan. The size you need depends mostly on how far away people will scan it. Here are the practical rules for print.
The scan-distance rule
A common guideline is a 10:1 ratio — the scan distance should be about ten times the width of the code. So a 2 cm (0.8 in) code scans comfortably from about 20 cm, while a billboard scanned from 5 metres needs a code roughly 50 cm wide.
As a safe minimum for handheld print like flyers and business cards, keep the code at least 2 x 2 cm (0.8 x 0.8 in).
Resolution and quiet zone
For print, export at high resolution or use SVG so the code stays crisp at any size. Always keep a quiet zone — an empty margin of at least four modules — around the code so scanners can detect it.
Denser codes (lots of data) have finer patterns and need to be printed a bit larger. Keeping the encoded content short lets you print smaller.
Frequently asked questions
- What's the minimum QR code size for printing?
- Keep it at least 2 x 2 cm (0.8 x 0.8 in) for handheld scanning. For greater distances, scale up using the 10:1 distance-to-size ratio.
- How big should a QR code be on a billboard?
- Use the 10:1 rule: for a 5-metre scan distance, make the code roughly 50 cm wide.
- What resolution should I use?
- Export at high resolution or use SVG so the code stays sharp at print size. QR Geni exports print-ready files.
- Do I need a margin around the code?
- Yes — keep a quiet zone of at least four modules of empty space so scanners can find the code.
Related guides
Try a generator
Popular use cases
Create your QR code now — free
No credit card required. Design, download, and track in minutes.
Get started free