0/11
Spaces and hyphens are ignored. Enter 10 characters to calculate the check digit, or 11 to verify it.
Container markingISO 6346
0 detected
How the check digit is calculated
01 · CONVERT
Letters become numbers from A=10 to Z=38, skipping multiples of 11 (11, 22, 33). Digits keep their value.
02 · WEIGHT
Each of the first 10 values is multiplied by a power of two, 20 to 29, and the products are added up.
03 · MODULO 11
The check digit is the sum modulo 11. A remainder of 10 becomes 0.