trysandbox.io logotrysandbox.io

// a sandbox of 139 sharp tools

Every little generator
you keep googling for.

QR, barcodes, bcrypt hashes for PHP, UUIDs, JWT decoders, color palettes — fast, local, no signup. Search the sandbox and start.

IP Subnet Calculator

Developer · tool

IP Subnet Calculator

CIDR to network, broadcast, mask, host range and count.

Network

192.168.1.0

Broadcast

192.168.1.255

Netmask

255.255.255.0

Wildcard

0.0.0.255

First host

192.168.1.1

Last host

192.168.1.254

Usable hosts

254

Prefix

/24

// about the sandbox

The small utilities you need,
without the ad-walls.

Every generator runs entirely in your browser. Your inputs never leave the page — no servers, no logging, no tracking pixels. Open the tool, get the thing, close the tab.

  • 100%client-side
  • 0accounts
  • 139sharp tools
  • ∞free forever