Morovia offers a check digit calculator online at http://www.morovia.com/education/utility/upc-ean.asp. With this utility, you can calculate check digit by entering your numbers - no matter it is a UPC, EAN, SSCC, GTIN or BLN.  It is a wonderful utility and has been running for many years since Morovia started.

Now, Morovia added another online utility to allow you to calculate check digits in bulk. This is quite useful when you have a range of number. The typical case is the UPC-A numbers you own. For example, you could have a GS1 prefix 123456789, which leaves you 2 digits for your item number. And you want a list of final numbers with check digits.  Repeating 100 times is tedious work on a web page. Now no more.

Go to http://www.morovia.com/bulk-check-digit-calculation/index.php and enter 123456789??. Note that the two question marks repsent any digits in the last two positions.  Click on Submit and the web page send out the answer -

123456789005
123456789012
123456789029
123456789036
123456789043
123456789050
123456789067
123456789074
123456789081
123456789098
123456789104
123456789111
123456789128
123456789135
123456789142
123456789159
123456789166
123456789173
123456789180
123456789197
123456789203
123456789210
123456789227
123456789234
123456789241
123456789258
123456789265
123456789272
123456789289
123456789296
123456789302
123456789319
123456789326
123456789333
123456789340
123456789357
123456789364
123456789371
123456789388
123456789395
123456789401
123456789418
123456789425
123456789432
123456789449
123456789456
123456789463
123456789470
123456789487
123456789494
123456789500
123456789517
123456789524
123456789531
123456789548
123456789555
123456789562
123456789579
123456789586
123456789593
123456789609
123456789616
123456789623
123456789630
123456789647
123456789654
123456789661
123456789678
123456789685
123456789692
123456789708
123456789715
123456789722
123456789739
123456789746
123456789753
123456789760
123456789777
123456789784
123456789791
123456789807
123456789814
123456789821
123456789838
123456789845
123456789852
123456789869
123456789876
123456789883
123456789890
123456789906
123456789913
123456789920
123456789937
123456789944
123456789951
123456789968
123456789975
123456789982
123456789999

All 100 numbers are listed in order. Quite neat.