QR Code Version 21 Capacity and Size (101×101)
A version 21 QR code is 101 modules per side, or 109 modules including the 4-module quiet zone. At error correction M it holds up to 1,035 alphanumeric characters or 711 bytes.
Maximum characters by error correction level
| L | M | Q | H | |
|---|---|---|---|---|
| Numeric | 2,232 | 1,708 | 1,224 | 969 |
| Alphanumeric | 1,352 | 1,035 | 742 | 587 |
| Byte | 929 | 711 | 509 | 403 |
| Kanji | 572 | 438 | 314 | 248 |
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 | 50.5 mm | 54.5 mm |
| 0.75 mm | 75.75 mm | 81.75 mm |
| 1 mm | 101 mm | 109 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 |