Proximity Card Number Calculator & Converter

This calculator converts a card number with a facility code to a full serialized card number


  • Converts a facility code formatted number to full or serialized card number
  • For use with 125KHz Wiegand 26 Bit ISO Cards and Tags
  • Some card access control systems will only recognize one type of number formatting
  • Some proximity cards and tags only display one set of numbers
  • Use the card on the left as an example

Example: Facility Code 087 & Card Number 16340 = Serialized Number 5717972