QRizeo

QR Code Size Calculator

Enter how far away people will be when they scan, and how long your content is. You get a minimum print size in centimetres and inches.

Or pick a common placement

Paste your link or text. 24 bytes. Longer content means a denser code.

Minimum size: 4.5 cm (1.8 in) wide

Your content needs a QR version 2 grid (25 × 25 modules). Each module prints at about 1.36 mm, including the quiet zone.

This is an estimate for good light and a flat, matte surface. Go larger for glossy, curved or dim placements, and test a print first.

How the calculation works

  1. Start with the common rule of thumb: code width ≈ scanning distance ÷ 10.
  2. Adjust for density. A long link or contact card has more modules, so each module is smaller at the same print size. The calculator scales the size up for dense codes.
  3. Apply a floor of 2 cm, below which many phones struggle to focus.
  4. Round up and print a test before ordering a big run.

Typical sizes

Business card (20–30 cm)

2–2.5 cm for a short link; 3 cm for a vCard.

Table tent (40–60 cm)

5–7 cm.

Poster (1–2 m)

12–20 cm.

Shop window or banner (3–5 m)

30–50 cm.

What else matters

  • Lighting, glossy lamination and curved surfaces all need extra size.
  • Keep a quiet zone of four modules around the code; it is part of the printed size.
  • Contrast matters as much as size: dark code, light background.

Questions people ask

Is bigger always better?

Up to a point. Very large codes viewed up close may not fit in the camera frame. Size for the distance people actually stand.

Does a logo change the size I need?

Add about 10–20%, because the logo forces higher error correction and more modules.

Last updated 11 October 2026 by the QRizeo team.

URL QR codeQR code with logoQR & barcode scannerRestaurant menu QR code

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