6 Calculators

For It Admin Calculators

Explore our complete collection of free online calculators curated for this audience.

Calculate network address, broadcast, host range, wildcard mask from IP and subnet.

Convert IP addresses between decimal, binary, hexadecimal, and integer formats.

Estimate transfer time from file size and speed, or calculate required bandwidth.

Plan VLAN subnets with VLSM allocation for departments and segments.

Search TCP/UDP port numbers by port or service name.

Convert Time to Live (TTL) between seconds and human-readable duration. DNS presets and expiry time calculator for sysadmins.