Networking tools
Plan address space, compare transfer rates and make network values easier to read.
Networking
Subnet Calculator
Find the network, address range and subnet mask for an IPv4 address.
NetworkingIP Range to CIDR
Turn a first and last IPv4 address into the smallest exact set of CIDR blocks.
NetworkingCIDR Splitter
Divide an IPv4 network into equal, smaller subnets.
NetworkingCIDR Merger
Combine overlapping or aligned adjacent CIDR blocks without adding addresses.
NetworkingVLSM Calculator
Allocate different subnet sizes to match a list of device counts.
NetworkingIPv4 Converter
View an IPv4 address as dotted decimal, an integer, hexadecimal and binary.
NetworkingIPv6 Compressor / Expander
Shorten or expand an IPv6 address using consistent zero-compression rules.
NetworkingWildcard Mask Calculator
Convert an IPv4 prefix into a subnet mask and its inverse wildcard mask.
NetworkingBandwidth Converter
Convert a data rate between bits, kilobits, megabits and gigabits per second.
NetworkingData Transfer Time Calculator
Estimate how long a data transfer takes at a sustained effective bandwidth.
NetworkingIP Address Classifier
Identify common IPv4 address categories such as private and loopback.
NetworkingMAC Address Formatter
Write a MAC address in common colon, hyphen, dotted and raw formats.