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ip-to-hex

Converting an IP address to hex represents the same address in hexadecimal — useful for low-level networking, IPv6 already-hex notation, packet captures, and embedded systems where addresses are stored as 4 / 16 raw bytes. IPv4 dotted-quad 192.168.1.1 becomes 0xC0A80101 in hex; IPv6 stays close to its native colon-hex form. The ZTools IP to Hex Converter handles both versions, supports CIDR notation, and outputs in multiple formats (packed, byte-spaced, with / without 0x prefix).

Use cases​

Decode a packet capture​

tcpdump shows hex addresses; convert back to dotted-quad for human reading.

Embedded systems / firmware​

Static IP addresses stored as 4-byte arrays. Hex form is the canonical representation.

Database storage​

Some databases (PostgreSQL inet, MySQL VARBINARY) store IPs as bytes. Hex form is portable across systems.

Verify subnet math​

AND-ing an address with its netmask is easier visualised in hex than dotted-decimal.

How it works​

  1. Paste IP — IPv4 (192.168.1.1) or IPv6 (2001:db8::1). Tool detects version automatically.
  2. Convert — IPv4: each octet → 2 hex digits → concatenated. IPv6: already hex, just normalised.
  3. Pick format — Packed (C0A80101), byte-spaced (C0 A8 01 01), 0x-prefixed (0xC0A80101), array of bytes ([192,168,1,1]).
  4. Reverse direction — Toggle to convert hex back to IP.

Examples​

Input: 192.168.1.1

Output: Hex packed: C0A80101. Bytes: C0 A8 01 01. 0x form: 0xC0A80101.

Input: 10.0.0.1

Output: Hex: 0A000001. Easy to spot the leading 10 (= 0x0A).

Input: 2001:db8::1

Output: Already hex; full form 2001:0DB8:0000:0000:0000:0000:0000:0001.

Frequently asked questions​

Why hex instead of decimal?

Hex maps cleanly to bits (4 bits per hex digit). Easier for bitmask math, firewall rules, low-level packet work. Dotted-quad is friendlier for humans navigating networks.

IPv6 already shows hex — why convert?

IPv6 in zero-compressed form (::1) hides leading zeros. Packed hex shows all 16 bytes for byte-level work.

CIDR support?

Yes — 192.168.0.0/24 converts the address; the prefix length stays as-is.

Privacy?

All in browser.

Tips​

  • For firewall rule debugging, convert both address and netmask to hex — bit operations become obvious.
  • For database storage, packed bytes (no separators) is the most portable.
  • For human reading, prefer dotted-quad — hex is for code and packet captures.

Try it now​

The full ip-to-hex runs in your browser at https://ztools.zaions.com/ip-to-hex — no signup, no upload, no data leaves your device.

Open the tool ↗

Last updated: 2026-05-06 · Author: Ahsan Mahmood · Edit this page on GitHub