QR Code Version 31 Capacity and Size (141×141)
A version 31 QR code is 141 modules per side, or 149 modules including the 4-module quiet zone. At error correction M it holds up to 2,113 alphanumeric characters or 1,452 bytes.
Maximum characters by error correction level
| L | M | Q | H | |
|---|---|---|---|---|
| Numeric | 4,417 | 3,486 | 2,473 | 1,897 |
| Alphanumeric | 2,677 | 2,113 | 1,499 | 1,150 |
| Byte | 1,840 | 1,452 | 1,030 | 790 |
| Kanji | 1,132 | 894 | 634 | 486 |
The byte row counts bytes. Japanese or Chinese text in UTF-8 takes 3 bytes per character. The kanji row counts characters encoded in kanji mode (Shift_JIS). This site's generator encodes text in byte mode (UTF-8), so treat the kanji row as the limit set by the standard.
Print size guidelines
Side length for each module size. The farther the scanning distance, the larger the modules should be.
| Module | Code only | With quiet zone |
|---|---|---|
| 0.5 mm | 70.5 mm | 74.5 mm |
| 0.75 mm | 105.75 mm | 111.75 mm |
| 1 mm | 141 mm | 149 mm |
Data that fits in this version
Whether each example fits (Yes / No) at each error correction level, estimated in byte mode.
| Data | L | M | Q | H |
|---|---|---|---|---|
| URL (about 40 characters) | Yes | Yes | Yes | Yes |
| Wi-Fi settings (about 60 characters) | Yes | Yes | Yes | Yes |
| vCard contact (about 250 characters) | Yes | Yes | Yes | Yes |