Ipv4 Address Converter

Free online tool. All processing is client-side. No signup needed.

How to Use the Ipv4 Address Converter

1. Enter your input values above
2. Results update automatically
3. Copy or download the output

What is a Ipv4 Address Converter?

An IPv4 Address Converter translates IP addresses between dotted-decimal (192.168.1.1) and other representations: binary, hexadecimal, integer (decimal), and in-addr.arpa format. IP addresses are fundamentally 32-bit integers — the familiar dotted-decimal is just a human-friendly representation. Understanding all formats is useful for subnet calculations, network programming, and reading technical documentation.

How Does It Work?

Enter an IPv4 address in dotted-decimal. The converter displays: (1) Binary: 11000000.10101000.00000001.00000001, (2) Hexadecimal: C0.A8.01.01, (3) Integer: 3232235777, (4) Reverse DNS: 1.1.168.192.in-addr.arpa. Each format serves different use cases — binary for subnet masks, integer for efficient database storage, hex for low-level network code.

Formula

IPv4 = 32 bits = 4 octets\nInteger Value = A×256³ + B×256² + C×256 + D\nBinary: 8 bits per octet, zero-padded\nHex: 2 hex digits per octet\nReverse DNS: D.C.B.A.in-addr.arpa\nSpecial IPs: 127.0.0.1 (localhost), 0.0.0.0 (any), 255.255.255.255 (broadcast)

Who Uses This Tool?

• Network engineers converting IP ranges for routing and ACL configuration
• Database admins storing IP addresses in efficient integer format (INT UNSIGNED)
• DNS administrators creating reverse lookup (PTR) records
• Security researchers analyzing IP representations in different tools
• Programming: understanding IP address arithmetic for subnetting and CIDR calculations

Pro Tips

• Storing IPs as integers (BIGINT) is 4× more space-efficient than VARCHAR(15) and allows range queries with BETWEEN
• The IP 0.0.0.0 in server binding means 'listen on all interfaces'; 127.0.0.1 means 'localhost only'
• Some systems accept unusual IP formats: http://3232235777 or http://0xC0A80101 both resolve to 192.168.1.1 in most browsers
• Private ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16 — never routable on the public internet

Frequently Asked Questions about Ipv4 Address Converter

Why store IPs as integers?

Space: 4 bytes vs. up to 15 bytes. Range queries: BETWEEN works natively. Sorting: numerical order is natural. MySQL's INET_ATON()/INET_NTOA() handle the conversion.

What's in-addr.arpa used for?

Reverse DNS lookups — finding domain names from IP addresses. PTR records are stored under the reversed IP. Email servers use this to verify sending servers.

Free online Ipv4 Address Converter — no signup, 100% client-side processing. All data stays in your browser.