BarcodeBC > Articles > What Is QR Code's One-line Symbols Capacity?
The capacity of a QR Code's one-line symbols depends on the version and error correction level of the code. Each version of a QR Code has a different number of modules, which determines the maximum capacity of the code.
For example, the QR Code version 40 (the largest version as of September 2021) has a maximum capacity of approximately 4,296 alphanumeric characters when using the highest error correction level. However, this capacity can be reduced if other data types (such as binary data or kanji characters) are used, or if a lower error correction level is chosen.
In general, the larger the QR Code version and the higher the error correction level, the more data it can store. However, it is important to note that the capacity of a QR Code is not just limited by its version and error correction level, but also by factors such as the size and quality of the printed or displayed code, as well as the distance and angle from which it is being scanned.
A QR Code with L error correction level and size of 41x41 has a maximum capacity of 152 alphanumeric characters, 265 binary data, or 191 kanji characters.
The maximum capacity of a QR Code with M error correction level and size 41x41 is 1,965 alphanumeric characters, 3,116 numeric characters, or 7,089 binary (8-bit) bytes.
A QR Code with Q level error correction and size 41x41 has a maximum capacity of 140 numeric characters, 77 alphanumeric characters, or 25 bytes of binary data.
A QR Code with H level and size 41x41 has a data capacity of 158 alphanumeric characters or 296 bytes of binary data. However, it's worth noting that the actual data capacity of a QR Code may vary depending on the encoding mode used and the specific content being encoded. Additionally, the QR Code's error correction level can also affect the amount of data that can be stored in a QR Code.
The maximum amount of data that can be stored in a QR Code varies depending on the type of encoding and error correction level used.
1. For numeric data, the maximum capacity of a QR Code can range from 7,089 characters for the lowest error correction level (L) to 1,852 characters for the highest error correction level (H).
2. For alphanumeric data, the maximum capacity ranges from 4,296 characters for the lowest error correction level (L) to 1,116 characters for the highest error correction level (H).
3. For binary (8-bit) data, the maximum capacity ranges from 2,953 bytes for the lowest error correction level (L) to 764 bytes for the highest error correction level (H).
It's important to note that these maximum capacities are theoretical and can be reduced if the QR Code contains additional formatting or other types of data.