How to use IP Address Converter
The IP to Decimal converter translates an IPv4 address between its familiar dotted-quad form and the single 32-bit integer that computers actually use internally, and back again. Storing IP addresses as integers makes database range queries fast and is how many geolocation and access-control systems represent them, so developers regularly need to move between the two notations. This tool also shows the binary and hexadecimal forms, making it a handy reference when you are debugging packet captures, writing firewall rules, or building software that handles addresses.
- Enter an IPv4 address in dotted form, or a 32-bit integer.
- Click Convert to translate between the two representations.
- Read the decimal, binary and hexadecimal equivalents.
- Copy whichever form your database or application expects.
- Reverse the process any time by entering the other notation.
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How the conversion works
An IPv4 address is four 8-bit numbers, or octets, each ranging from 0 to 255. To form the single integer, each octet is weighted by its position: the first is multiplied by 256³, the second by 256², the third by 256, and the last added as-is. So 192.168.1.1 becomes 192×16777216 + 168×65536 + 1×256 + 1 = 3,232,235,777. The reverse simply peels the octets back out with division and remainder. Because the maths is exact, the round trip never loses information.
| Octet | Multiplier | Example (192.168.1.1) |
|---|---|---|
| 1st | 16,777,216 | 192 → 3,221,225,472 |
| 2nd | 65,536 | 168 → 11,010,048 |
| 3rd | 256 | 1 → 256 |
| 4th | 1 | 1 → 1 |
Why integer storage is useful
Representing addresses as integers lets databases compare and range-scan them efficiently, which is why IP-based geolocation tables store start and end of each block as integers and find a match with a single BETWEEN query. Integer form is also compact and avoids string-parsing overhead in high-throughput systems. When you import such a dataset or read a binary log, you will frequently meet addresses as bare numbers, and this converter turns them back into human-readable dotted form instantly.
Worked examples
Dotted-quad to integer
Inputs: 192.168.1.1
Result: 3,232,235,777 (binary 11000000.10101000.00000001.00000001)
Integer back to IP
Inputs: 3232235777
Result: 192.168.1.1 · hex C0.A8.01.01
Binary representation
Inputs: 10.0.0.1
Result: 00001010.00000000.00000000.00000001 = 167,772,161
Glossary
- Octet
- One of the four 8-bit numbers (0–255) that make up an IPv4 address.
- Dotted-quad
- The standard human-readable IPv4 form, such as 192.168.1.1.
- 32-bit integer
- The single numeric value an IPv4 address represents internally.
- Hexadecimal
- Base-16 notation often used to display addresses compactly.
- Endianness
- The byte order in which a multi-byte value such as an IP integer is stored.
Related reading
Frequently Asked Questions
Why use IP Address Converter?
- Convert between dotted-quad and 32-bit integer forms of an IPv4 address instantly
- View binary and hexadecimal representations alongside the decimal value
- Prepare addresses for database columns that store IPs as integers
- Interpret bare numeric addresses found in binary logs or packet captures
Common use cases
- Convert an IP address to an integer for storage in a MySQL or PostgreSQL column
- Decode a numeric address found in a binary network log or hexdump
- Prepare address values for a geolocation BETWEEN query in a relational database
- Cross-check a hand-computed integer conversion against a verified correct result
- Reverse an integer back to dotted form when reading a geolocation database export
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