QR Code Scan Distance Calculator

Plan a QR code for the distance people will actually scan from. Get a practical artwork width, quiet-zone footprint, module size, print pixels, and optional camera-resolution check without pretending any rule of thumb guarantees a scan.

Plan QR size from real scan distance

Start with the farthest realistic phone-to-code distance. The calculator combines a transparent distance rule of thumb with QR density, the required quiet zone, and an optional camera-resolution check. Final artwork should still be tested on the actual material and devices.

Expected scan distance

Use the farthest distance people are likely to scan from.QR versionHigher versions contain more modules, so each module gets smaller at the same physical width.Distance ruleThis is a practical rule of thumb, not an ISO/DENSO scanning-distance guarantee.Real-world marginExtra room for glare, angle, motion, older cameras, or imperfect printing.

Recommended QR artwork width

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Enter a realistic distance to plan the symbol.

—Total footprint incl. quiet zone

—Module size at recommended width

—Rule-of-thumb distance at this width

—300 DPI export incl. quiet zone

—600 DPI export incl. quiet zone

—Core modules + quiet zone

Planning model: the distance ratio is a field heuristic. QR Code formally requires a four-module quiet zone; real scanning still depends on density, focus, contrast, print/screen quality, lighting, angle, damage, and camera behavior.

More production checks

Quiet zone (modules)DENSO specifies a four-module clear margin on every side.Planning module floor (mm)Optional practical floor, not a formal QR standard. Set 0 to disable this additional constraint.Camera image width (px)Used only for the geometric pixels-per-module estimate.Horizontal camera FOV (°)A rough phone-camera field of view; your device may differ.

Camera geometry check

—Estimated core QR pixels across

—Estimated camera pixels / module

—Horizontal scene width at distance

Camera geometry is an estimate, not a scanner guarantee.

Density comparison at this recommended core width

QR version	Core modules	Module size	Total footprint

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Preserve at least a 4-module quiet zone around the code.
Use vector output when possible; for raster print, export enough pixels for the physical footprint.
Dense QR versions need more physical width to keep each module large enough.
Test the final artwork at the real distance, lighting, angle, material, and device mix before production.

Don’t know the QR version? Check the actual generated symbol or use the QR capacity checker. For payload generation, use the QR code generator.

QR print-to-scan cluster

Generate the payload, then proof the actual symbol geometry

A valid payload is only one layer. Compare the rendered QR's module count, raster detail and intended physical size before you commit to print, labels or distribution.

Scan a QR Plan print size Check quiet zone

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Standards and assignment boundary

Use the exact symbology required by the receiving system. WebToolArc can validate supported syntax and check digits, but it does not allocate GS1 identifiers, certify regulated documents, or guarantee acceptance by a particular scanner, retailer, carrier, or institution.

What this calculator can and cannot tell you

The distance-to-width ratio is a practical planning heuristic, not a QR specification requirement or a promise that a particular phone will scan. The official geometry piece is the symbol itself: a QR version fixes the core module count, and a clear quiet zone of four modules is required around the symbol.

Why QR density matters

At the same physical width, a higher QR version packs in more modules, making every module smaller. That is why a dense payload may need a larger printed or displayed code than a short URL even when the viewing distance is unchanged.

Test the final production piece

Focus, lighting, contrast, glare, print spread, screen pixel pitch, viewing angle, damage, logos, and camera behavior can all reduce scan margin. Treat the result as a starting point and scan-test the final artwork at the intended distance on multiple representative devices.