We have found 2 software records in our database eligible for .arc to .vcf file format conversion.
Using the Nokia NbuExplorer, Noki or similar utilities for Nokia phones it should be quite possible to export the contacts from Nokia ARC backup files and save them in form of a vCard file (.vcf), which is what arc to vcf conversion most likely represents. Seems to be working just fine.
Updated: September 14, 2022
A small usefull program for exploring and extracting of files created with Nokia PC suite
ARC
Files with arc file extension can be found as backups produced by certain Nokia phones based on Symbian OS. Can be recovered using Nokia PC Suite.
VCF
Files with vcf file extension are almost always contacts saved in vCard format. Typically used various Personal Information Managers or e-mail clients (for example Outlook), as well as exported from mobile phones, for the purposes of sharing or migrating contacts from one device to another.