# check Digit

Check digit

Every container-number needs its own check digit. This check digit is the last figure of the container-number, that behind the -.

Of course, you can calculate this check digit yourself.

This is the simplest part of the calculation.
Last but not least the calculation:
with an example: OOLU 708695.
Each letter of the prefix has its own value:

 A 10 J 20 S 30 B 12 K 21 T 31 C 13 L 23 U 32 D 14 M 24 V 34 E 15 N 25 W 35 F 16 O 26 X 36 G 17 P 27 Y 37 H 18 Q 28 Z 38 I 19 R 29
Each figure of the number has its own value.

 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 0 0

 We know that: Now calculate: O 26 26 X 1 = 26 O 26 26 X 2 = 52 L 23 23 X 4 = 92 U 32 32 X 8 = 256 7 7 7 X 16 = 112 0 0 0 X 32 = 0 8 8 8 X 64 = 512 6 6 6 X 128 = 768 9 9 9 X 256 = 2304 5 5 5 X 512 = 2560 Total = 6682
Of course we can understand if you don’t want to calculate all these check digits by hand.
Therefore we made you a little tool.

Enter the container-number as followed: XXXX123456, just try it.

 Container-number: Check digit: Calculate the check digit Clear the form
Now divide this total by 11:
6682 / 11 = 607,4545

and take the figures after the comma
and multiply it by 11 to get the check digit.
0,4545 X 11 = 5

The complete container-number is:
OOLU 708695-5