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// a sandbox of 376 sharp tools

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

Calorie & BMR Calculator

Generators · tool

Calorie & BMR Calculator

Daily calories with Mifflin-St Jeor.

BMR

1699 kcal

Maintain

2633 kcal

Lose 0.5 kg/wk

2133 kcal

Gain 0.5 kg/wk

3133 kcal

Uses the Mifflin-St Jeor equation. Estimates only — not medical advice.

// 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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