GS1 Identification Numbers |
| Field 14 digits(*) |
(*) In databases, GS1 identification numbers must be placed right justified in a 14 digit field |
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Serial Shipping Container Code (SSCC) |
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Detailed explanation on how the check digit is calculated: |
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Digit positions |
GTIN-8 |
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N1 |
N2 |
N3 |
N4 |
N5 |
N6 |
N7 |
N8 |
GTIN-12 |
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N1 |
N2 |
N3 |
N4 |
N5 |
N6 |
N7 |
N8 |
N9 |
N10 |
N11 |
N12 |
GTIN-13 |
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N1 |
N2 |
N3 |
N4 |
N5 |
N6 |
N7 |
N8 |
N9 |
N10 |
N11 |
N12 |
N13 |
GTIN-14 |
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N1 |
N2 |
N3 |
N4 |
N5 |
N6 |
N7 |
N8 |
N9 |
N10 |
N11 |
N12 |
N13 |
N14 |
SSCC |
N1 |
N2 |
N3 |
N4 |
N5 |
N6 |
N7 |
N8 |
N9 |
N10 |
N11 |
N12 |
N13 |
N14 |
N15 |
N5% |
N17 |
N18 |
Multiply value of each position by |
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x3 |
x1 |
x3 |
x1 |
x3 |
x1 |
x3 |
x1 |
x3 |
x1 |
x3 |
x1 |
x3 |
x1 |
x3 |
x1 |
x3 |
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Accumulated results = Sum |
Substract the sum value of last digit from 10 = Check Digit |
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Detailed explanation on how the check digit is calculated: |
Example of a check digit calculation for the 13 digit field |
Positions |
N1 |
N2 |
N3 |
N4 |
N5 |
N6 |
N7 |
N8 |
N9 |
N10 |
N11 |
N12 |
N13 |
Number without check digit |
6 |
2 |
9 |
1 |
0 |
4 |
1 |
5 |
0 |
0 |
2 |
1 |
Step 1: Multiply |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
by |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
Step 2: Add up |
= |
= |
= |
= |
= |
= |
= |
= |
= |
= |
= |
= |
results to sum |
6 |
6 |
9 |
3 |
0 |
12 |
1 |
15 |
0 |
0 |
2 |
3 |
= 57 |
Step 3: Substract the sum value of the last digit (7) from 10 = Check Digit (3) |
Number with check digit |
6 |
2 |
9 |
1 |
0 |
4 |
1 |
5 |
0 |
0 |
2 |
1 |
3 |
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