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	Click Here To Download EAN CHECK DIGIT CALCULATION PROGRAM For further information please contact Technical Department, Eng Ahmed A. Hassan E-mail : ahmad_hassan@eanegypt.com

Detailed explanation on how the check digit is calculated:

Digit positions

EAN/UCC-8

N₁

N₂

N₃

N₄

N₅

N₆

N₇

N₈

UCC-12

N₁

N₂

N₃

N₄

N₅

N₆

N₇

N₈

N₉

N₁₀

N₁₁

N₁₂

EAN/UCC-13

N₁

N₂

N₃

N₄

N₅

N₆

N₇

N₈

N₉

N₁₀

N₁₁

N₁₂

N₁₃

EAN/UCC-14

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

N₁₆

N₁₇

N₁₈

Multiply value of each position by

x3

x1

x3

x1

x3

x1

x3

x1

x3

x1

x3

x1

x3

x1

x3

x1

x3

Accumulated results = Sum

Subtract sum from the next highest multiple of ten = Check digit

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: Subtract *sum* from nearest multiple of ten (60) = Check digit (3)
Number *with* check digit	6	2	9	1	0	4	1	5	0	0	2	1	3

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