Useful tools.
Ready when you are.

Calculate aspect ratios and resize dimensions proportionally.

Convert numbers between decimal, hexadecimal, and binary.

Instantly generate up to 100 random UUIDs / GUIDs for database seeding and testing.

Pick a color and get HEX, RGB, HSL, and CMYK values.

Translate complex cron expressions into human-readable plain English.

Roll RPG dice (d4 through d100) with optional modifiers.

Calculate the exact number of days, weeks, and months between two dates.

Enter your choices and spin the wheel to pick one at random.

Minify or beautify JavaScript in your browser.

Create strong, random passwords with customizable length and character sets.

Calculate percentages, ratios, and percentage changes quickly.

A simple 25-minute timer for focused work and 5-minute breaks.

Generate QR codes from any URL or text and download them as PNG.

Paste a list of names and randomly select a winner.

Calculate network address, broadcast, usable hosts, and subnet mask from CIDR.

Convert Unix timestamps to human-readable dates in local time and UTC.

Split a bill with tip across any number of people. Works well on mobile.

Quickly convert between Length, Weight, and Temperature units.

See your public IP address plus city, country, timezone, and browser details.

Count characters, words, sentences, and estimated reading time as you type.