IPv4 to Binary Converter - Free Online Tool
IPv4 to Binary Converter
Convert Between Decimal and Binary IPv4 Notation
Understanding Binary IP Notation
Learning Subnetting
Seeing an address in binary makes it much easier to understand how subnet masks and CIDR boundaries actually work.
Bitwise Operations
Useful when manually verifying AND/OR bitwise operations used in subnetting calculations.
Low-Level Networking
Understand how routers and switches represent addresses internally at the bit level.
Client-Side Only
All conversion happens locally in your browser — no data is ever sent to a server.
Why IPv4 Addresses Are 32 Bits
An IPv4 address is a single 32-bit number, conventionally displayed as four 8-bit octets separated by dots for readability. Each octet ranges from 00000000 to 11111111 in binary (0-255 in decimal) — understanding this binary representation is the foundation for understanding subnetting, since a subnet mask works by dividing this 32-bit number into a network portion and a host portion.
Key Takeaways
- Bidirectional: Converts decimal to binary and binary back to decimal automatically.
- 8-Bit Padded Octets: Each binary octet is zero-padded to exactly 8 digits for clarity.
- Client-Side Only: All conversion happens locally in your browser — no data is ever sent to a server.