Check digit calculator for barcodes and credit cards

I couldn’t find any online page where you can calculate the check digit for a barcode with an arbitrary length of digits. There are pages where you can do this for barcodes with specific length, like EAN13 or GS1 barcodes etc.

Since it was easy to create one from scratch, I thought I’ll do one and post it.

You can find it here in action

HTH

Jaimon