What Size Should a QR Code Be for Printing? (Size Guide)

Print 500 flyers, give them away at an event, and then find that the QR code is not scannable. Pick one up and hold it up to the screen; nada. The QR code is only 1.5 centimeters square and printed on an A5 sheet of paper; too small for the average person holding their phone out from their body. Download a high-res QR code at genqrfree.com/qr-code-generator-for-print — then use this guide to export it at exactly the right size.

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The 10:1 Rule — Scanning Distance Determines Minimum Size

The 10:1 rule explained — scanning distance determines minimum size

The single most useful rule for QR print sizing: the QR code should be at least 1/10th of the distance from which it will be scanned.

• Scanned from 10 cm (close-up, like a business card): minimum 1 cm wide
• Scanned from 30 cm (arm's length, table card or flyer): minimum 3 cm wide
• Scanned from 1 m (standing at a poster): minimum 10 cm wide
• Scanned from 3 m (venue signage, A-frame): minimum 30 cm wide
• Scanned from 5 m (large banner or billboard): minimum 50 cm wide

This is simply a minimum and not a target. Any bigger would be better for the purpose of reliability, particularly in poor lighting conditions. There is the famous ratio 10:1 that will give us a starting point.

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Minimum Sizes by Print Format

Use this as your quick reference before placing a QR code in any design:

For business cards specifically, 1.5 × 1.5 cm is the practical minimum assuming good contrast — dark QR on white. If your card has a colored or dark background, increase to 2 × 2 cm to compensate. See our guide on QR code on a business card for card-specific placement tips. A vCard QR code for a business card also tends to be denser than a simple URL QR, so err on the larger side.

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DPI and Pixel Resolution for Print

Print resolution is measured in DPI (dots per inch). The standard for commercial print is 300 DPI.

To calculate the pixel size you need for a given physical print size at 300 DPI:

pixels = cm ÷ 2.54 × 300

Common conversions:

The generator's 2000px PNG covers you cleanly up to about 17 × 17 cm at 300 DPI. For anything larger, download SVG — it's a vector format and renders at native print resolution regardless of physical size, with zero pixelation.

Never upscale a tiny PNG image. Should you download a PNG that is only 500 pixels wide and scale it to cover your entire poster, the QR code will come out blurry and will not scan. Always download your image in the right size or use an SVG instead.

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The Quiet Zone — Don't Forget the White Border

The quiet zone refers to the white space around the QR pattern. This is not an unnecessary blank space, but rather, it allows the scanner to pinpoint where the code begins.

Minimum quiet zone: 4 module widths on all four sides. In practice for print:

• QR at 2 cm → at least 2 mm of clear white space on each side
• QR at 5 cm → at least 4–5 mm of clear white space on each side
• QR at 15 cm → at least 10–12 mm of clear white space on each side

When placing the QR in a design tool, don't let text, borders, images, or color fields overlap or touch the quiet zone. For more on placement rules and file format best practices, see the guide on design tips for placing QR codes on print materials.

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How to Export at the Right Size from genqrfree.com

1. Go to genqrfree.com/qr-code-generator-for-print and generate your QR code
2. Click Download SVG if the QR will be larger than 17 × 17 cm on the final print, or placed in a professional design file (Illustrator, InDesign, Affinity Publisher)
3. Click Download PNG at 2000px for A4 and smaller print use
4. Place in your design at the physical size required — don't scale a PNG up beyond its native resolution
5. Print one test copy at final size and scan before the full run

If your print shop asks for a specific pixel size or DPI, use the conversion table above to calculate the download size you need, then contact us if you need a custom export size.

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Frequently Asked Questions

What is the minimum size for a QR code on a business card? 1.5 x 1.5cm in good contrast (dark against white). That would mean that it is okay to scan between 10cm and 20cm under ordinary light conditions. However, if you use a card with either a busy background or a darker one, then go to the 2x2cm. For vCard types of QR Codes, you should stick to 2x2cm.

What pixel size should I export for a full A4 poster? A QR code that measures 10 x 10 cm in size on an A4 poster with 300 DPI will have the dimensions of around 1181 x 1181 px. The 2000px PNG file will more than cover for your needs, but if the QR will be bigger than this, or if you will get the poster printed by a printing press, download the SVG file.

Does QR code complexity affect the minimum print size? Yes. Using a short URL (https://example.com) will result in a low-density QR code, where there will be fewer modules which will be bigger and easily readable. In case a QR code is used to contain a vCard with several fields or a long URL with parameters, the outcome will be a high-density QR code that contains many modules of smaller size. High-density QR codes have to be large enough to be easily readable. To summarize, a 20–30% increase should be considered.

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Download your QR code at the right size for print at genqrfree.com/qr-code-generator-for-print — PNG or SVG, free, no sign-up.