Decimal IP Converter
Convert an IPv4 address to and from its 32-bit decimal integer representation.
Inputs
Decimal (32-bit Integer)
3,232,235,777
Hexadecimal
0xC0A80101
Dotted Decimal
192.168.1.1
Step by step
Octet values
192 . 168 . 1 . 1
= 192 * 2^24 + 168 * 2^16 + 1 * 2^8 + 1 * 2^0
32-bit decimal
192*16777216 + 168*65536 + 1*256 + 1
= 3232235777
Hexadecimal
decimal 3232235777 to hex
= 0xC0A80101
How it works
An IPv4 address is a 32-bit number typically displayed in dotted-decimal notation. Converting to a single integer treats the four octets as a big-endian 32-bit value: first_octet * 2^24 + second_octet * 2^16 + third_octet * 2^8 + fourth_octet.
Formula
IP to decimal
decimal = octet1 * 2^24 + octet2 * 2^16 + octet3 * 2^8 + octet4
- o_1..o_4
- Individual octets (0-255)
Frequently Asked Questions
Why would I need the decimal form of an IP?
Some databases store IPs as integers for efficient range queries and indexing. Firewall rules, ACLs, and programmatic comparisons are also often faster with integer representations than string parsing.
Can I put a decimal IP in a browser?
Yes — most browsers and operating systems accept decimal IP notation (e.g. http://3232235777 for 192.168.1.1) because the underlying socket API converts it back to the standard 32-bit representation before connecting.