Digital Toolchest

IP to Hex Converter

Convert any IPv4 address to hexadecimal in one click. Choose your output format — dotted (C0.A8.00.01), a single contiguous value (C0A80001), or 0x-prefixed (0xC0A80001) — and get zero-padded, uppercase hex instantly, no server required.

IPv4 address(es)

Enter one IPv4 address per line in dot-decimal notation.

Everything runs locally in your browser — nothing is uploaded.

Hex outputEach octet converted to 2-digit uppercase hexadecimal, formatted per your chosen output style.

0 lines in0 lines outN/A runtime

Hundreds of addresses convert in under 1ms on modern browsers.

How to convert IP to hex

Convert in 3 steps

Takes ~5 seconds
  1. 1
    Paste your IP addresses

    Enter one or more IPv4 addresses in dot-decimal notation, one per line.

  2. 2
    Pick a format and convert

    Choose dotted, contiguous, or 0x-prefixed output, then click Convert to Hex. Each address is split into four octets and each octet becomes a 2-digit uppercase hex value.

  3. 3
    Copy the results

    Grab the hex output for use in your network configs, scripts, or documentation.

Octet 0 becomes 00 and octet 255 becomes FF — always 2 digits, always uppercase, regardless of the output format you choose.

Who should use this tool?

  • Network engineers working with hex-based router and switch configurations
  • Developers parsing or encoding IP addresses in binary protocols or packed 32-bit integers
  • Students learning how IPv4 addresses map to hexadecimal notation

Examples

Private LAN address converted to dotted hex (default format).

Input
192.168.0.1
Output
C0.A8.00.01

Same address converted to a contiguous hex value.

Input
192.168.0.1
Output
C0A80001

Broadcast address — octet 255 becomes FF, dotted format.

Input
255.255.255.0
Output
FF.FF.FF.00

About IP to hex conversion

IPv4 addresses are four decimal octets from 0 to 255. Converting each octet to hexadecimal gives a compact, widely used alternative notation in networking and low-level programming — commonly written either as four dot-separated hex bytes or as a single packed 32-bit hex value.

This IP to hex converter transforms any dot-decimal IPv4 address into hexadecimal, in whichever format you need. Each octet is independently converted to a zero-padded, 2-digit uppercase hex value; choose dotted output (192.168.0.1 → C0.A8.00.01), a contiguous value (→ C0A80001), or a 0x-prefixed value (→ 0xC0A80001). Bulk convert multiple addresses at once, with clear error messages for any invalid input. All processing runs locally in your browser.

Choice of output format

Pick dotted hex, a contiguous value, or 0x-prefixed output — no need for a separate tool per format.

  • Dotted (C0.A8.00.01)
  • Contiguous (C0A80001)
  • 0x-prefixed (0xC0A80001)
Accurate hex conversion

Each octet is zero-padded to exactly 2 uppercase hex digits before formatting.

  • Zero-padded octets
  • Uppercase output
  • Consistent 8-digit value
Bulk processing

Paste a list of IPs and convert every line independently in one go.

  • One IP per line
  • Line order preserved
  • Per-line error reporting
Privacy first: we never send your input to a server. Everything runs locally in your browser.

Conversion tips

Ensure your input is valid dot-decimal IPv4 before converting.

  • Each octet must be a whole number from 0 to 255 — values outside that range are flagged as errors.
  • Remove any leading/trailing whitespace or extra dots before pasting for clean results.
  • Use the Hex to IP Converter to reverse the process and verify your output, in either dotted or contiguous form.

Frequently asked questions

Why is octet 0 shown as 00 instead of just 0?>
Each octet is zero-padded to exactly 2 hex digits for consistency, before being formatted into your chosen output style. This matches standard hex notation used in networking tools.
Can I convert a subnet mask like 255.255.255.0 to hex?>
Yes. Subnet masks are valid IPv4-format values and convert normally — 255.255.255.0 becomes FF.FF.FF.00 in dotted format, or FFFFFF00 as a contiguous value.
What happens if I enter an IP with an octet greater than 255?>
That line is flagged as invalid with an error message. Valid IPv4 octets must be integers between 0 and 255 inclusive.
How is dotted hex different from a contiguous or 0x-prefixed value?>
Dotted hex keeps the four-octet structure (e.g. C0.A8.00.01). Contiguous merges them into one 8-digit number (C0A80001), and 0x-prefixed adds the common code-style prefix (0xC0A80001) — all three represent the exact same address, just formatted differently. Use the output format selector to pick the one you need.

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