All Tools

Online stopwatch and countdown timer with centisecond precision, unlimited lap recording, browser notifications, fullscreen mode, and keyboard shortcuts. Works offline and saves your settings.

Browse a complete list of world time zones with abbreviations, UTC offsets, IANA identifiers, DST status, and live local time. Filter by country, region, or offset and export.

Explore gyroscope physics in interactive 3D. Adjust spin, tilt, mass, and friction to watch precession and nutation unfold in real time.

Build a virtual Japanese zen garden online: rake sand into flowing patterns and place stones, bonsai, lanterns, and cherry blossom.

Draw on a canvas and watch your strokes mirror into symmetric, mandala-like patterns. Adjust segments, palettes, brush, and mirror, or let auto-draw create them.

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files. Compare hashes to verify file integrity, all in your browser.

Generate strong random passwords and memorable passphrases with adjustable length, character options, a strength meter, and bulk export.

Visually build CSS Grid layouts with template areas, custom tracks, gaps, and alignment controls. Copy clean CSS and HTML code instantly.

Calculate the value of your stock options from strike price, vesting schedule, ISO/NSO tax, and exit scenarios at different company valuations.

Create CSS loading spinners and animations with no JavaScript. Pick from 43 presets, customize color, size, and speed, then copy the HTML and CSS.

Create soft UI neumorphic effects with visual controls. Generate CSS box-shadow code with a live preview and one-click copy.

Create custom CSS easing curves visually. Drag the control points, pick from 29 presets, preview the animation, and copy the cubic-bezier code.