IPv4/CIDR calculator
IPv4/CIDR calculator lets you calculate IPv4 network, broadcast, mask, totals, and policy-aware host counts in your browser.
8 tools
IP and network calculations
Subnet splitter
Subnet splitter lets you split equally or allocate VLSM requirements and report unassigned CIDRs in your browser.
IPv6 notation converter
IPv6 notation converter lets you convert IPv6 canonical, expanded, hexadecimal, and 128-bit integer forms in your browser.
IPv6/CIDR calculator
IPv6/CIDR calculator lets you calculate IPv6 network ranges and exact 128-bit address totals in your browser.
IP range ⇔ CIDR
IP range ⇔ CIDR lets you convert IPv4 or IPv6 ranges to and from minimal CIDR sets in your browser.
CIDR aggregation
CIDR aggregation lets you deduplicate and minimally aggregate CIDRs without widening their union in your browser.
IP and CIDR comparison
IP and CIDR comparison lets you calculate CIDR containment, overlap, intersection, and directional differences in your browser.
IP integer converter
IP integer converter lets you convert IPv4 or IPv6 addresses to and from unsigned integers and hex in your browser.