# Chubb 36bit

Everything you need to understand Chubb 36bit

## Card format Overview

A proprietary 36-bit card format used in access control systems, featuring a unique structure composed of 14-bit site code and 16-bit card number, allowing for easy management and avoiding card number duplication for secure, contactless access.

## Chubb 36bit format properties

### Site Code

14 bits. The facility code range is 0 to 16,383.

### Card Number

16 bits. A unique serial number (0-65,535) for each card within that facility code.

### Generate examples

Put in the values for this card format, we'll generate the results in a few different formats.

### Here's your example

| Format  | Value                           |
| ------- | ------------------------------- |
| Hex     | C8000C8<br>Copy                |
| Decimal | 209715400<br>Copy              |
| Binary  | 000000001100100000000000000011001000<br>Copy |

## The API that turns phones into key fobs.