PSD to PNG Converter
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Decimal to IP Converter
Turn a stored integer back into an IP address — IPv4 and IPv6, both directions.
Converted
Quick Tool Overview
The Decimal to IP Converter turns the integer form of an address back into dotted IPv4 or shortened IPv6 — and the other way — with hex, octal and binary views and the reserved range it belongs to.
- What it does
- Converts between IP addresses and integers
- You give it
- Numbers or addresses, one per line
- You get back
- The other form, plus every other notation
- Best for
- Reading IPs stored as numbers in a database
About the Decimal to IP Converter
Databases rarely store an IP address as text. MySQL has INET_ATON, PHP has ip2long, and plenty of logs and analytics tables simply hold a number — because comparing and indexing integers is faster than comparing strings. Then you are looking at 3232235777 in a query result and need to know whose address it is.
Paste numbers or addresses, one per line, in any mix: a number becomes an address, an address becomes a number. IPv4 and 128-bit IPv6 are both supported, with IPv6 handled as big integers so every digit stays exact. The first value is shown in every form at once — decimal, hexadecimal, octal and binary in bytes — along with the reserved range it belongs to, so a private, loopback or multicast address is obvious at a glance.
Key features of the Decimal to IP Converter
Both directions at once
A number becomes an address and an address becomes a number, in one list.
IPv6 too
128-bit values handled as big integers, with correct :: shortening.
Every notation
Decimal, hexadecimal, octal and byte-aligned binary.
Range detection
Private, loopback, link-local and multicast ranges are named.
Matches your database
The same values as MySQL’s INET_ATON and PHP’s ip2long.
How to use the Decimal to IP Converter
-
1
Paste numbers or addresses
One per line; a mixed list is fine.
-
2
Choose IPv4 or IPv6
32-bit or 128-bit — the maximum value is shown for each.
-
3
Read the converted list
Each line goes whichever way it needs.
-
4
Check the detail card
Every form of the first value, and the range it falls in.
Frequently asked questions
192.168.1.1. It is the 32-bit integer form, which is what INET_ATON and ip2long produce.
Each of the four octets is one byte of a 32-bit number: 192×2²⁴ + 168×2¹⁶ + 1×2⁸ + 1. The binary view on the page shows the bytes lined up.
Yes. IPv6 is a 128-bit number — far beyond what a JavaScript number holds exactly — so it is handled with big integers, and the shortened :: form is produced correctly.
Integer comparison is faster than string comparison, a range check becomes BETWEEN, and the column is smaller. It is why almost every high-volume log table does it.
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