413vhcu1lq0463ob: Created page with "The number of letters a QR code can store depends on the QR code version, the error correction level, and the encoding mode. The four encoding modes are: # '''Numeric Mode''': Only digits (0-9) # '''Alphanumeric Mode''': Letters (A-Z), digits (0-9), and nine special characters (`space`, `$`, `%`, `*`, `+`, `-`, `.`, `/`, `:`) # '''Binary Mode''': Any byte of data (e.g., AS..."

2024-10-14T18:24:22Z

Created page with "The number of letters a QR code can store depends on the QR code version, the error correction level, and the encoding mode. The four encoding modes are: # '''Numeric Mode''': Only digits (0-9) # '''Alphanumeric Mode''': Letters (A-Z), digits (0-9), and nine special characters (<code>space</code>, <code>$</code>, <code>%</code>, <code>*</code>, <code>+</code>, <code>-</code>, <code>.</code>, <code>/</code>, <code>:</code>) # '''Binary Mode''': Any byte of data (e.g., AS..."

New page

The number of letters a QR code can store depends on the QR code version, the error correction level, and the encoding mode. The four encoding modes are:

# '''Numeric Mode''': Only digits (0-9)
# '''Alphanumeric Mode''': Letters (A-Z), digits (0-9), and nine special characters (<code>space</code>, <code>$</code>, <code>%</code>, <code>*</code>, <code>+</code>, <code>-</code>, <code>.</code>, <code>/</code>, <code>:</code>)
# '''Binary Mode''': Any byte of data (e.g., ASCII or binary files)
# '''Kanji Mode''': For encoding Kanji characters

Since you are interested in letters, the '''Alphanumeric Mode''' is the most relevant for storing typical letters and numbers.

=== Maximum number of characters a QR code can store in Alphanumeric Mode, based on the version and error correction level: ===
{| class="wikitable"
!'''Version'''
!'''Low (L)'''
!'''Medium (M)'''
!'''Quartile (Q)'''
!'''High (H)'''
|-
|'''1'''
|25
|20
|16
|10
|-
|'''2'''
|47
|38
|29
|20
|-
|'''3'''
|77
|61
|47
|35
|-
|'''4'''
|114
|90
|67
|50
|-
|'''5'''
|154
|122
|87
|64
|-
|'''10'''
|429
|339
|242
|181
|-
|'''20'''
|1,208
|958
|684
|511
|-
|'''30'''
|2,034
|1,613
|1,152
|860
|-
|'''40'''
|4,296
|3,391
|2,471
|1,850
|}

=== Key notes: ===

* '''Low (L)''': 7% of the QR code can be damaged and still be readable.
* '''Medium (M)''': 15% can be damaged.
* '''Quartile (Q)''': 25% can be damaged.
* '''High (H)''': 30% can be damaged.

So, for '''version 40''' at the '''lowest error correction level (L)''', you can store up to '''4,296 alphanumeric characters''' (letters, numbers, and some symbols).

QR Code - Revision history