Subnet calculator, IP conversions, and geolocation
Calculate network details from IP/CIDR or IP/Netmask notation. Get network address, broadcast, host range, and more.
Split a network into smaller subnets. Useful for VLSM planning.
Convert IP addresses between formats: decimal, hexadecimal, binary, and reverse DNS (ARPA).
Convert numbers between bases: binary (2), octal (8), decimal (10), hexadecimal (16), base32, and base64.
Convert between CIDR notation and subnet mask.
Look up the geographic location of an IP address. View on map.
All these tools are available via our REST API. Use them programmatically in your applications.