เวอร์ชัน QR Code 7 (45×45)
QR version 7 is 45×45 modules: up to 370 digits, 224 alphanumeric, 154 bytes or 95 kanji at level L; 64 bytes at H.
Version 7 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 | ตัวเลข | ตัวเลขและตัวอักษร | ไบต์ | คันจิ |
|---|---|---|---|---|---|
| L | ~7% | 370 | 224 | 154 | 95 |
| M | ~15% | 293 | 178 | 122 | 75 |
| Q | ~25% | 207 | 125 | 86 | 53 |
| H | ~30% | 154 | 93 | 64 | 39 |
Codewords and error-correction blocks
The symbol carries 196 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 | 156 | 40 | 2 × (98, 78, 20) |
| M | 124 | 72 | 4 × (49, 31, 18) |
| Q | 88 | 108 | 2 × (32, 14, 18) + 4 × (33, 15, 18) |
| H | 66 | 130 | 4 × (39, 13, 26) + 1 × (40, 14, 26) |
Symbol structure
- โมดูล
- 45 × 45
- Data modules (codeword bits + remainder bits)
- 1,568
- Remainder bits
- 0
- Alignment patterns
- 6 (centre rows/columns 6, 22, 38)
- Version information blocks
- Yes (2 × 18 bits)