TASK

Convert between IPv4 and IPv6 address formats

Convert IP addresses between dotted-decimal, hex, binary, and IPv6 representations. Understand IPv4-mapped IPv6 addresses.

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IPv4 addresses are 32-bit values shown as four decimal octets (192.168.1.1). IPv6 are 128-bit shown as eight hex groups (2001:db8::1). IPv4 can be embedded in IPv6 as ::ffff:192.168.1.1 (IPv4-mapped). Understanding these formats is essential for network configuration and debugging.
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IP Address Info →
Look up an IP address to see its type (IPv4/IPv6), class, and range information. This helps identify whether an address is private, public, loopback, or multicast.
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Hex Encoder →
Convert an IPv4 address to its hexadecimal representation. 192.168.1.1 → 0xC0A80101. This is useful for packet analysis and low-level network programming.
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Binary Encoder →
Convert an IP address to binary. 192.168.1.1 → 11000000.10101000.00000001.00000001. This reveals the network/host boundary and is useful for subnet calculation.

Frequently asked questions

What is an IPv4-mapped IPv6 address?: It is an IPv6 address that embeds an IPv4 address: ::ffff:a.b.c.d (e.g., ::ffff:192.168.1.1). This allows IPv6 sockets to communicate with IPv4 hosts during the IPv6 transition. The first 80 bits are zero, next 16 are 1 (ffff), last 32 are the IPv4 address.
Why are there both IPv4 and IPv6?: IPv4 has 4.3 billion addresses, which are exhausted. IPv6 has 3.4×10^38 addresses, solving the shortage. IPv6 also has simplified header structure, no need for NAT, and built-in security (IPsec). The transition is ongoing — most networks support both (dual-stack).

Workflows that solve this

Convert Base32 to Hex

Decode Base32 and re-encode as hex for debugging.

Convert Base64 to Hex

Decode a Base64 string into raw bytes and re-encode it as hexadecimal for inspection or interop.

Convert Binary to Hex

Decode a binary (base-2) string into its byte value and re-encode as hexadecimal.

ChaCha20 Encrypt then Hex

ChaCha20 encrypt then hex-encode the ciphertext.

Hex encode then decode round-trip

Encode text to hexadecimal and decode it back to verify the round-trip preserves the original data.

Hex-encode text and analyze

Convert text to its hexadecimal representation then compute character statistics on the hex output.

Convert Multibase to Hex

Decode multibase and re-encode as plain hex.

Convert Octal to Binary

Decode an octal (base-8) number into its numeric value and re-encode as a binary string.

Convert Octal to Hex

Decode octal and re-encode as hex for compact representation.

Reverse text and show hex encoding

Reverse a string then inspect its hexadecimal representation — useful for debugging byte-order issues and encoding puzzles.

SHA-512 Hash then Hex Encode

Compute SHA-512 hash then encode as hex for readability.

Decode URL and show hex bytes

Percent-decode a URL-encoded string then view its hexadecimal byte representation for low-level analysis.

Encode a text payload for URL transport

Percent-encode text then show its hex representation for safe URL parameter transport.

XXencode then Hex

XXencode text then hex-encode the result.

Learn more

Want to understand why?

How to Build Network Packets

An advanced-level guide covering packet, network, binary. Includes step-by-step instructions, common errors, troubleshooting tips, and security considerations for packet.

How to Calculate Netmasks

An intermediate-level guide covering netmask, subnet, ip-address. Includes step-by-step instructions, common errors, troubleshooting tips, and security considerations for netmask.

CIDR (Classless Inter-Domain Routing) expresses a network as IP/prefix length (e.g., 10.0.0.0/8), replacing IPv4 address classes with flexible network partitioning.

An IP address is the numeric identifier assigned to a network interface—32 bits for IPv4 (four decimal octets) and 128 bits for IPv6 (eight hexadecimal groups)—used for network addressing.

Related tools

IP Address Info

Analyze IPv4/IPv6 addresses and CIDR subnets: class, private/multicast flags, binary/hex, reverse DNS, network/broadcast/hosts. Free, private, and 100% client-side.

Encode text to hexadecimal online. Free, private, and 100% client-side.

Encode text to binary (base-2) online. Free, private, and 100% client-side.