Free online Network calculators.
Calculate how long a file transfer will take based on file size, connection speed, and protocol overhead — or find the bandwidth needed to hit a target time.
Professional IPv4 subnet calculator for network administrators. Calculate network addresses, broadcast addresses, usable host ranges, and CIDR masks with ease.
Professional IPv6 subnet calculator. Plan your 128-bit network architecture, calculate prefix boundaries, and handle IPv6 address compression and expansion with ease.