QR Code Size Guide
The right size depends on how far away people will scan from.
The 10:1 Rule
Scanning distance = QR code size x 10
A 3cm QR code can be scanned from up to 30cm away. A 10cm QR code works from about 1 meter.
Size Recommendations
| Use Case | Minimum | Recommended | Distance |
|---|---|---|---|
| Business Cards | 2cm x 2cm | 2.5cm x 2.5cm | 15-30cm |
| Flyers & Brochures | 2.5cm x 2.5cm | 3cm x 3cm | 20-40cm |
| Table Tents / Menus | 3cm x 3cm | 4cm x 4cm | 30-50cm |
| Posters (A3/A2) | 5cm x 5cm | 8cm x 8cm | 0.5-2m |
| Window Displays | 10cm x 10cm | 15cm x 15cm | 1-3m |
| Banners | 15cm x 15cm | 20cm x 20cm | 2-5m |
| Billboards | 50cm x 50cm | 1m x 1m | 5-20m |
Real-World Sizing Scenarios
The table above gives you a quick lookup, but every printed piece has its own quirks. Here are common scenarios where the details matter, with the sizes we actually recommend after years of watching clients print QR codes in the wild.
Print collateral (flyers, brochures, product inserts)
For handheld print pieces, assume your reader holds the material about 25 to 40 centimeters away, roughly a comfortable reading distance. That puts the minimum QR code size around 2.5 by 2.5 centimeters, with 3 by 3 centimeters being the safer, more forgiving choice. Leave at least 3 to 5 millimeters of white quiet zone around the code. If the flyer will be folded, never let a fold line cross the QR code, because even a small crease can break scanning. For coated glossy stock, print a test and check for glare, which can reduce the scan rate dramatically under overhead lighting.
Product inserts that sit inside small packaging, like beauty products or electronics, should be closer to 3 by 3 centimeters because inserts are often scanned under less ideal lighting and with the package partly obstructing the camera angle.
Posters and signage (A3, A2, A1, and larger)
Posters are tricky because scanning distance varies wildly. A poster mounted at eye level in a gallery or office is scanned from 50 centimeters to 2 meters, so a 5 to 8 centimeter QR code is usually enough. A poster in a busy transit corridor or pinned to a café wall can be scanned from 3 meters or more, so push the QR code up to 15 or 20 centimeters to be safe.
Apply the 10:1 rule against the maximum expected distance, not the average. People often scan from the back of the room or across a busy space rather than stepping right up to the poster. For outdoor or backlit signage, increase the size by 25 to 50 percent to compensate for sunlight, glare, and less perfect camera conditions. Always include a short call to action next to the code so scanners know what they will get, which noticeably boosts scan rate.
Stickers and labels (product stickers, asset tags, packaging)
Stickers are usually scanned from close range, 10 to 25 centimeters, so the QR code itself can be small, around 1.5 to 2 centimeters. The challenge is the sticker substrate, not the size. Die cut stickers on curved packaging (bottles, tubes, cans) can distort the QR pattern, so use a higher error correction level (Q or H in Quality QR) so damaged or warped sections still scan reliably.
For asset tags placed on equipment that may get scuffed, pick vinyl or polyester stock with a scratch-resistant laminate, and again use error correction H so the code still works after wear and tear. Keep the white quiet zone generous on stickers, since the edges are often the first part to peel or dirty. If you are producing holographic or metallic stickers, make sure the reflective finish does not sit directly behind the QR code pattern, because mirror-like surfaces throw off camera autofocus.
Always Test Before Printing
Print a test at the actual size and test with multiple devices at the expected scanning distance.
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