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The last digit of a barcode number is a computer check digit which makes sure the barcode is correctly composed. Use our check digit calculator below to calculate a check digit.
Use GS1's UPC check digit calculator to confirm the integrity of your barcode number.
Calculate your UPC, EAN or SCC-14 code check digit! It’s a simple 5-step algorithm for check digit calculation at Simply Barcodes. Click here!
UPC–A Check Digit Calculator. The last digit of an UPC–A barcode is a check digit that is used for human transcription error detection. Here it is marked with a red square: Check Digit Formula. To compute the check digit follow the simple rules: Take all the digits in odd positions, add them and multiply by three;
Use the check digit calculator to verify a UPC or EAN barcode.
How to calculate a check digit manually. The following table gives an example to illustrate how a GTIN-13 Check Digit is calculated: The check digit is the last barcode number that makes sure the barcode is correctly composed. Find out here how to calculate your check digit manually.
Find out what a check digit is and accurately calculate bar code check digits with our efficient check digit calculator. Try it today!