Everyday utilities, completely in your browser.

Multi-file workspace with line numbers, syntax tools, and real-time word counting.

Cryptographically secure passwords with entropy meter, symbols, and batch copy.

Instant client-side QR codes with color customization, ECC levels, and PNG/SVG exports.

Generate v4 (random), v7 (timestamp-ordered), and nil UUIDs in batch format.

Encode and decode UTF-8 text to Base64 with URL-safe standard support.

Percent encode/decode URLs with interactive URI components query breakdown.

HEX, RGB, HSL, and CMYK bidirectional conversions with WCAG contrast audit.

Real-time multi-currency converter with reference tables and formula previews.

Length, weight, temperature, data storage, speed, and volume metrics.

Compare and convert date & times across global cities with time delta calculator.

Live epoch ticker and two-way human date to epoch seconds/milliseconds.

Pomodoro timer with customizable focus, short break, and long break intervals.

Millisecond stopwatch with split intervals, lap tracking, and best lap highlights.

Multi-city time cards with live clocks, UTC offset badges, and 12/24 hour display.

Custom duration countdown with presets, linear progress bar, and alarm audio alert.

Calculate sale prices, stacked coupons, percentage cuts, and sales tax receipts.

Test regular expressions with flags, match highlight index, and capture groups.

Calculate exact years, months, days, total hours lived, and next birthday countdown.

Determine day of the week, ISO week number, leap year, and day of the year progress.

Calculate net business days between dates with weekend and holiday deductions.

Track days remaining until events, holidays, or days elapsed since past milestones.

Add or subtract years, months, weeks, and days with instant target date calculator.

Guess the hidden number with warm/cold hints, or roll high-roller roulette.

Multi-dice roller with 3D physics, side bet challenges, doubles, and total scoring.

Call Heads or Tails with realistic 3D spinning coin and streak point multipliers.

Mystery box reel with customizable prize pools, point tiers, and mega jackpots.

Consult the fate oracle, make your prediction, and earn prophecy points.