~/tools / IP Calculator
IP Calculator
Look up an IPv4 address's binary and hexadecimal representation, address class, and whether it's private.
Useful while doing subnet math or setting up access restrictions — quickly check whether an address is a private range (for internal networks) or public, and see how it looks in binary.
# Use Cases
- Checking whether the IP in an access restriction or firewall rule is private or public
- Converting an IP to binary while working through subnetting math
- Converting an IP found in a log between hex and decimal notation
# Usage
- Enter the IPv4 address you want to inspect.
- Decimal, hex, and binary representations, address class, and private-IP status are shown automatically.
- Decimal
- 3232235786
- Hexadecimal
- 0xC0A8010A
- Address class
- Class C
- Private IP
- Yes
- Loopback
- No
- Binary
- 11000000.10101000.00000001.00001010
# FAQ
- What is a private IP address?
- An address range reserved for internal networks that's never routed on the public internet. RFC 1918 reserves three ranges: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.
- What are Class A/B/C?
- A historical classification of IPv4 addresses based on their leading bits. CIDR is the modern approach, but classes are still sometimes used as a rough size indicator.