Free technical tools for IT
Calculators and quick utilities for networking, systems, security and development. No sign-up, no install, and your data never leaves your browser.
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Browse the tools grouped by area of work.
Featured tools
The most-used utilities, ready to go in seconds.
IPv4 Subnet Calculator
Calculate the subnet mask, wildcard mask, network and broadcast addresses, and the usable host range from an IP and a CIDR prefix.
NetworkRAID Calculator & Storage Planner
Calculate RAID capacity and fault tolerance, or plan the number, size and type of drives your storage needs — for RAID 0, 1, 5, 6 and 10.
SysadminRobocopy Command Generator
Generate Robocopy commands from a visual configuration: subdirectories, permissions, retries, multithreading and more.
WindowsMAC Address Formatter
Convert and normalize MAC addresses between colon, hyphen, Cisco and plain formats. Identify unicast/multicast and locally/universally administered addresses.
NetworkHex / Decimal / Binary / Octal Converter
Convert integers between decimal, hexadecimal, binary and octal. Edit any of the 4 fields and the others update instantly, with exact BigInt precision for very large numbers.
DeveloperWhat is IT Tool Forge
IT Tool Forge is a growing collection of free technical utilities built for the everyday work of system administrators, IT managers, network technicians and developers. Every tool runs directly in your browser: no sign-up, no install, and your data never leaves your device.