Free Utilities Tools. Right in Your Browser.
Lightweight calculators, generators, and productivity tools for utilities running locally in your browser sandbox.
Cryptographic Secure Password Generator
Cryptographically secure client side entropy generation using browser window.crypto.getRandomValues(). Custom length sliders, character toggles, and live entropy strength meters.
Minimalist Pomodoro & Focus Timer
Clean 25/5/15 minute focus interval timer with browser tab title countdowns, Web Audio API sound chimes, and daily completed session counters.
Percentage Difference & Change Calculator
Solve "What is X% of Y?", "X is what % of Y?", and percentage increase/decrease calculations with reactive formula cards and step by step explanations.
Universal Unit & Measurement Converter
Multi category measurement conversion matrix across Length, Weight, Temperature, and Digital Storage with simultaneous reactive calculation across all units.
QR Code Generator for URLs & Text
Create high resolution scannable QR codes for URLs, contact information, and plain text with color customization, size controls, and instant PNG and SVG vector downloads.
Color Code Converter (HEX, RGB, HSL)
Convert between HEX, RGB, HSL, and CMYK color codes with a live visual swatch, native color picker, and WCAG accessibility contrast scores on black and white.
Age, Date & Calendar Difference Calculator
Calculate the exact elapsed duration between two calendar dates broken down into Years, Months, Weeks, Days, Hours, and Minutes with leap year accuracy.
Stopwatch & Multi Lap Timer
High precision browser stopwatch with millisecond digital display, split lap recording, fastest and slowest lap comparisons, and tab title status synchronization.
Time Zone Meeting Planner & Overlap Finder
Coordinate global team meetings and client calls across multiple time zones with an interactive 24 hour visual slider highlighting overlapping standard business hours (9 AM to 5 PM).
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