QR Code Version 12 (65×65)
QR version 12 is 65×65 modules: up to 883 digits, 535 alphanumeric, 367 bytes or 226 kanji at level L; 155 bytes at H.
Version 12 data capacity
Maximum characters in a single encoding mode, per error-correction level (ISO/IEC 18004:2015, Table 7). Mixed-mode data and ECI headers reduce these limits.
| EC level | Recovers | Numeric | Alphanumeric | Byte | Kanji |
|---|---|---|---|---|---|
| L | ~7% | 883 | 535 | 367 | 226 |
| M | ~15% | 691 | 419 | 287 | 177 |
| Q | ~25% | 489 | 296 | 203 | 125 |
| H | ~30% | 374 | 227 | 155 | 96 |
Codewords and error-correction blocks
The symbol carries 466 codewords in total, split between data and Reed-Solomon error correction (ISO/IEC 18004:2015, Table 9).
| EC level | Data codewords | EC codewords | Blocks (count × total, data, EC codewords) |
|---|---|---|---|
| L | 370 | 96 | 2 × (116, 92, 24) + 2 × (117, 93, 24) |
| M | 290 | 176 | 6 × (58, 36, 22) + 2 × (59, 37, 22) |
| Q | 206 | 260 | 4 × (46, 20, 26) + 6 × (47, 21, 26) |
| H | 158 | 308 | 7 × (42, 14, 28) + 4 × (43, 15, 28) |
Symbol structure
- Modules
- 65 × 65
- Data modules (codeword bits + remainder bits)
- 3,728
- Remainder bits
- 0
- Alignment patterns
- 6 (centre rows/columns 6, 32, 58)
- Version information blocks
- Yes (2 × 18 bits)