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// a sandbox of 376 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.

Running Pace Calculator

Generators · tool

Running Pace Calculator

Pace, speed and finish times.

Pace per km

5:00 /km

Pace per mile

8:03 /mi

Speed

12 km/h · 7.46 mph

5K finish

0:25:00

10K finish

0:50:00

Half marathon

1:45:29

Marathon

3:30:59

// 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.

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  • 0accounts
  • 376sharp tools
  • ∞free forever