QR Code Capacity Checker

Use the QR encoder itself to test payload length against a fixed version or find the smallest version that fits.

Text to test

Error correction

Version

0Characters

0UTF-8 bytes

—Version used

—Modules

ReadyThis uses the same QR encoder as the generator, so the result reflects the actual payload encoding rather than a rough character-count table.

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

All 21 QR tools

Text QRPlain-text payload and physical proof geometry Logo QRBranded symbol geometry and final-artwork proof Wi-Fi QRCredential payload and physical proof geometry Bulk QRBatch sample geometry and export proof Location QRCoordinate payload and field-use proof vCard QRContact payload and print proof QR LabelsSheet sample geometry and print proof WhatsApp QRwa.me payload and distribution proof

Byte-mode capacity & headroom table

Compare payload byte length against QR versions 1–10 for the selected error-correction level, then see the first version with usable byte-mode headroom.

—UTF-8 payload bytes

—First fitting version

—Detected content class

Version	Modules	Byte capacity	Headroom

This table is byte-mode capacity. Numeric and QR alphanumeric modes can fit more characters; scanner reliability also depends on print size, quiet zone and contrast.

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.

Capacity is encoding-specific

Capacity depends on QR version, error correction, and encoded byte mode. This tool uses the same local QR encoder as the generator instead of assuming that every visible character consumes one byte.