Technical information:
The amount of data that can be stored in the QR Code symbol depends on:
- the datatype (mode, or input character set)
- version (1,...,40, indicating the overall dimensions of the symbol)
- error correction level (L[ow], M[edium], Q[uality], H[igh])
The maximum storage capacities occur for 40-L symbols (version 40, error correction level L), and are as follows:
- Numeric only: Max. 7,089 characters (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
- Alphanumeric: Max. 4,296 characters (0–9, A–Z [upper-case only], space, $, %, *, +, -, ., /, :)
- Binary/byte: Max. 2,953 characters (8-bit bytes) (23624 bits)
- Kanji/Kana: Max. 1,817 characters