Tools

Calculate network ranges, plan storage, or turn a command into usable code. Open a utility below to work directly in your browser.

Networking

Find IPv4 host ranges and convert CIDR prefixes to subnet masks.

Expand IPv6 addresses and preview smaller prefixes inside an allocation.

Allocate differently sized IPv4 subnets from a shared parent block.

Estimate transfer time, required link speed, or data moved over a connection.

Compare raw disk capacity with usable space after RAID redundancy.

Build a five-field schedule and inspect its next five run times.

Translate permission checkboxes into octal modes and rwx notation.

Turn a Bash-style cURL request into Python Requests code.

Create salted bcrypt hashes or compare a candidate password with an existing hash.