Image
EAN-130081555733193   EAN-13 barcode 0081555733193
UPC-A081555733193   UPC-A barcode 081555733193
Product NameLa Clr Perf Lash Blk
CategoryMusical Instrument
Amazon.comA Buy on Amazon ~ B001T8S842
Price New0.99 US Dollars    (curriencies)
Long DescriptionLA CLR PERF LASH BLK
Created07-06-2012 7:57:41am
Modified06-07-2016 10:30:08am
MD52ecd979bc5de76d27deeff805862f8d6
SHA256a49902cfffeafd9dac9e9cb2854254527aa7b283c1907edbc33a9811848b527e
Search Googleby EAN or by Title
Query Time0.0086310

ISBN stands for International Standard Book Number. Originally this was a 10 digit number known as ISBN-10, but has been replaced with a 13 digit version known as ISBN-13 (aka EAN-13) to better fit in with the industry standard product numbering system.

The ISBN system offers a unique numbering system for books and publications of various types. ISBN offers 9 identification digits for each book or publication and one check digit. ISBN-13 expands the available number set by doubling the available numbers. You might think that the extra three digits would more than double the available numbers but ISBN is limited within the EAN-13 numbering system and will always start with 978 or 979 as the first three digits, leaving only 9 more digits for the actual identification digits and again the last digit is the check digit.

Any ISBN-10 number can be converted to ISBN-13. Any ISBN-13 number that starts with 978 can be converted back to ISBN-10. ISBN-13 numbers that start with 979 cannot be converted to ISBN-10.

The conversion process from ISBN-10 to ISBN-13 is a rather simple one. Start with the first 9 digits of the ISBN-10 number, place 978 in front and calculate the new check digit using the standard EAN check digit calculation.

If you want to calculate the check digit for ISBN-10, that is done using a MOD-11 calculation that is very different than the EAN check digit process.

ISBN-1-5905-9332-4

Look at the number above and below the barcode. You will see that except for the last digit in the ISBN number, all of the digits exist in the 13 digit version shown under the barcode right after the 978 and just before the new check digit of 5.

Now you can see how easy it is to convert between ISBN-10 and ISBN-13.

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