Utilities tools

Convert length, weight, temperature, volume, and more from one unit to another.

Generate strong, random passwords with custom length and character rules.

Convert colours between HEX, RGB, HSL, and HSB formats with a live preview.

Build linear and radial CSS gradients. Add colour stops, set angle, get Tailwind classes.

Browse the full Tailwind palette. Click any colour to copy HEX, RGB, or the class name.

Enter two colours and see the WCAG contrast ratio. Pass/fail for AA and AAA.

Enter a base colour and generate complementary, analogous, triadic, and monochromatic palettes.

Generate QR codes for URLs, text, or contact details. Download as PNG.

Generate random integers or decimals within any range. Supports bulk output.

Convert dimensions to aspect ratio or ratio to dimensions. Supports 16:9, 4:3, and more.

See your screen resolution, viewport size, device pixel ratio, browser, and OS.

Flip a virtual coin with satisfying animation. See result, history, and session stats.

Roll d4, d6, d8, d10, d12, or d20. Roll multiple dice, add modifier, see history.

Find the best meeting time across multiple timezones. Add your cities, see everyone's working hours at a glance, and find the perfect overlap — free, no signup.