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// 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.

Number Base

Developer · tool

Number Base

Binary, octal, decimal and hexadecimal converter.

Binary (base 2)

11111111

Octal (base 8)

377

Decimal (base 10)

255

Hexadecimal (base 16)

FF

// 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