Decimal-to-Binary Conversion Chart

Appendix C. Decimal-Binary Conversion

This appendix describes how to convert between the binary and decimal numbering systems, and includes the following sections:

• Decimal-to-Binary Conversion Chart

• Decimal Numbers

• Binary Numbers

• Converting Binary IP Addresses to Decimal

• Converting Decimal IP Addresses to Binary

Binary numbers are used by computers, including routers and switches, for their IP addresses. Thus, when working with and designing IP addresses, you need to understand how to work with binary numbers. People usually prefer to use decimal numbers, so converting between the binary and decimal numbering systems is a useful networking skill.

Note

In this appendix, the term IP refers to IP version 4 (IPv4).

This appendix describes the binary and decimal numbering systems, and explains how to convert between the two.