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.
Categories
Browse the tools grouped by area of work.
Network
Network, subnet and IP addressing calculations.
1 toolSysadmin
Tools for system administration and automation.
1 toolSecurity
Security utilities for technicians and IT managers.
0 toolsDeveloper
Utilities to support software development.
0 toolsWindows
Tools specific to Windows environments.
1 toolCalculators
Technical calculators for everyday IT work.
0 toolsFeatured 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.
WindowsWhat is IT Tools
IT Tools 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.