QR コードバージョン 40 (177×177)
QR version 40 is 177×177 modules: up to 7,089 digits, 4,296 alphanumeric, 2,953 bytes or 1,817 kanji at level L; 1,273 bytes at H.
Version 40 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 | 数字 | 英数字 | バイト | 漢字 |
|---|---|---|---|---|---|
| L | ~7% | 7,089 | 4,296 | 2,953 | 1,817 |
| M | ~15% | 5,596 | 3,391 | 2,331 | 1,435 |
| Q | ~25% | 3,993 | 2,420 | 1,663 | 1,024 |
| H | ~30% | 3,057 | 1,852 | 1,273 | 784 |
Codewords and error-correction blocks
The symbol carries 3706 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 | 2,956 | 750 | 19 × (148, 118, 30) + 6 × (149, 119, 30) |
| M | 2,334 | 1,372 | 18 × (75, 47, 28) + 31 × (76, 48, 28) |
| Q | 1,666 | 2,040 | 34 × (54, 24, 30) + 34 × (55, 25, 30) |
| H | 1,276 | 2,430 | 20 × (45, 15, 30) + 61 × (46, 16, 30) |
Symbol structure
- モジュール
- 177 × 177
- Data modules (codeword bits + remainder bits)
- 29,648
- Remainder bits
- 0
- Alignment patterns
- 46 (centre rows/columns 6, 30, 58, 86, 114, 142, 170)
- Version information blocks
- Yes (2 × 18 bits)